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Sony DNW-A100 Maintenance Manual
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Sony DNW-A100 Maintenance Manual

Sony DNW-A100 Maintenance Manual

Digital video hybrid recorder
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Table of Contents

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DIGITAL VIDEO HYBRID RECORDER
DNW-A100/A100P
DNW-A50/A50P
DNW-A45/A45P
ANALOG COMPOSITE DECODER BOARD
BKDW-505/506
SDTI INPUT KIT
BKNW-103
ANALOG COMPONENT INPUT BOARD
BKNW-104
AES/EBU I/F KIT
BKNW-105
MAINTENANCE MANUAL
Volume 1 1st Edition (Revised 1)
Part 2

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Table of Contents
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Summary of Contents for Sony DNW-A100

  • Page 1 DIGITAL VIDEO HYBRID RECORDER DNW-A100/A100P DNW-A50/A50P DNW-A45/A45P ANALOG COMPOSITE DECODER BOARD BKDW-505/506 SDTI INPUT KIT BKNW-103 ANALOG COMPONENT INPUT BOARD BKNW-104 AES/EBU I/F KIT BKNW-105 MAINTENANCE MANUAL Part 2 Volume 1 1st Edition (Revised 1)
  • Page 2 électrique, d’incendie ou de blessure n’effectuer que les réparations indiquées dans le mode d’emploi à moins d’être qualifié pour en effectuer d’autres. Pour toute réparation faire appel à une personne compétente uniquement. DNW-A100 Serial No. 10111 and Higher DNW-A100P (UC) Serial No. 10001 and Higher DNW-A100P (CE) Serial No.

  • Page 3: Table Of Contents

    1-7-20. EQ-56 Board ................1-12 1-7-21. FP-91 Board ................1-12 1-7-22. KY-364 Board ................1-12 1-7-23. LP-81 Board ................1-12 1-7-24. MB-648 Board ................. 1-12 1-7-25. MS-50 Board ................1-12 1-7-26. PC-70 Board ................1-12 1-7-27. PD-35 Board................1-13 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 4 Perfection after Replacing the Hard Disk Drive ........1-16 2. Electrical Alignment Overview 2-1. Notes on Electrical Alignment ..............2-1 2-2. Outline of Electrical Alignment ..............2-1 2-3. Required Equipment/Tools ................. 2-2 2-4. Internal Video Test Signal ................2-3 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 5 Component Video Output Adjustment (Standard System) ..3-37 3-7-5. Component Video Output (Betacam) Adjustment (525/60 System) ............... 3-39 3-7-6. Reference Color Frame Pulse Check (Standard System only) ............3-41 3-7-7. Internal 4fsc Frequency Adjustment ........3-43 3-7-8. Preparation in Another System ..........3-44 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 6 3-11. LTC Alignment and Full Erasure Current Check (TC-96 Board) ..3-114 3-11-1. Adjustment Overview ............3-114 3-11-2. LTC Playback Level Check ........... 3-115 3-11-3. LTC Recording Level Check ..........3-116 3-11-4. Full Erasure Current Check ............ 3-117 3-11-5. LTC Erasure Current Check ........... 3-117 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 7 5-13. Fan Motor Replacement ................5-86 5-13-1. Fan Motor (Rear) Replacement ..........5-87 5-13-2. Fan Motor (PS) Replacement ........... 5-90 5-13-3. Fan Motor (HDD) and Fan Motor (MD) Replacement .... 5-91 5-14. Brush Slip Ring Assembly Replacement ..........5-97 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 8 5-32-11. SE-341 Board ................. 5-215 5-32-12. SE-378 Board ................. 5-216 5-32-13. SWC-30 Board ............... 5-217 5-32-14. SWC-31 Board ............... 5-220 5-32-15. TC-96 Board ................5-222 5-32-16. TR-79 Board ................5-223 5-32-17. VR-223 Board ................ 5-224 5-32-18. VR-224 Board ................ 5-226 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 9 7-1-7. AT Head Azimuth Check and Adjustment ......7-34 7-1-8. AT Head Head-to-tape Contact Check and Adjustment ..7-37 7-1-9. AT Head Position Check and Adjustment ....... 7-40 7-1-10. Audio Level Check and Adjustment in REV Mode....7-42 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 10: Manual Structure

    Purpose of this manual This manual is the Maintenance manual part 2 volume 1 of digital video hybrid recorder DNW series. DNW series includes the following models. DNW-A100/A100P DNW-A50/A50P DNW-A45/A45P This Maintenance manual part 2 is intended for use by trained system and service...
  • Page 11 Describes the frame wiring and the schematic diagrams for the unit. Section 4 Schematic Diagrams for Optional Boards Describes the schematic diagrams for the optional boards. Section 5 Board Layouts Describes the board layouts for the unit and the optional boards. DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 12: Related Manuals

    ..Protocol Manual of Remote (9-pin) Connector (available on request) This manual explains the protocol for controlling the VTR via the RS-422A (9-pin serial remote) . If this manual is required, please contact your local Sony Sales Office/Service Center.

  • Page 13: Caution For Handing The Unit With Built-In Hdds (For Part 2)

    Pay careful attention to the following when handlings the HDD alone. Notes when carrying or keeping the HDD Pack the HDD using the specified packing materials when carrying or keeping the HDD. Moreover, choose the method which the HDD is not subject to the vibration when carrying. DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 14 Handle the HDD that is removed because of a trouble or failure in the same manner as a normal HDD following above precautions. Then pack the HDD using the specified packing materials, contact your local Sony Sales Office/Service Center. DNW-A100/A50/A45...

  • Page 15: Service Overview

    Replace these components with Sony parts whose part ment. Be sure to replace it with the specified fuse or IC numbers appear in this manual published by Sony. If not, link as shown below after tracing and removing the root of this may cause a fire or electric shock.

  • Page 16: Memory Ic With Backup Battery

    1-2. Memory IC with Backup Battery 1-3. NV-RAM 1-2. Memory IC with Backup Battery 1-3. NV-RAM Memory IC (RAM) with backup battery is equipped on There are the NV-RAMs (EEP-ROM, and RAM with IC710 of the SS-63 board. backup battery) and EVR ICs used on the boards (includ- This IC is used to store the setting data of setup menu, etc.
  • Page 17 TBC-23 Board Replacement” of the mainte- nance manual Part 1.) VPR-17 / IC909 EVR IC Adjustment data for VPR-17 board Readjust the VPR-17 board. (Perform the electrical adjustments in “6-9. VPR-17 Board Replacement” of the mainte- nance manual Part 1.) DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 18: Alignment Tape

    CTL track. Therefore, when playing back this portion, time data which is interpolated by the time code signal is displayed. 3. CR2-1B (SONY part No. 8-960-096-01) : For analog Betacam, NTSC CR2-1B PS (SONY part No. 8-960-096-51) : For analog Betacam, PAL Used for tracking adjustment. Time (min. : sec.) Video Track...
  • Page 19 1-4. Alignment Tape 4. CR5-1B (SONY part No. 8-960-096-41): For analog Betacam, NTSC CR5-1B PS (SONY part No. 8-960-096-91): For analog Betacam, PAL Used for Betacam video adjustment. Time (min. : sec.) Video AFM* LAU tracks CTL track 0:00 -...
  • Page 20 8:00 - 10:00 1 kHz sine wave, 0 VU 1 kHz sine wave, 0 VU No signal 7. CR8-1B PS (SONY part No. 8-960-096-86): For analog Betacam, PAL Used for Betacam audio adjustment. Time (min. : sec.) LAU tracks CTL track...

  • Page 21: Extension Board

    Tool required For Large Plug-in Board Description: IC extraction tool for PLCC socket Description: Extension board (L), EX-555 SONY Part No. J-6035-070-A SONY part No.: A-8277-211-A This tool can be used for IC whose pins number are 20 to 124.

  • Page 22: Service Action After Replacing Or Repairing The Mounted Circuit Board

    1-7. Service Action after Replacing or Repairing the Mounted Circuit Board (AC-169, AD-105, APR-12/13, CCM-15, CL-29) 1-7. Service Action after Replacing or 1-7-4. APR-13 Board Repairing the Mounted Circuit Board After replacing: Perform “6-3. APR-13 Board Replacement” of the mainte- After replacing or repairing the mounted circuit board nance manual part 1.
  • Page 23 4. Set the setup extend menu ITEM-105 to “ON”. this board. 5. For the DNW-A100/A50/A45 only, set the sub-ITEMs 0 and 1 in the setup extend menu ITEM-709 to “D-1”. 6. Input the analog composite video signal (BB signal) to Preparing tools REF.

  • Page 24: Board (Bknw-103)

    . Time code generator: TEKTRONIX SG505 option-02 or equivalent 525/60 system: SONYBVG-1600 or equivalent . Audio analyzer: 625/50 system: SONY BVG-1600PS or equivalent TEKTRONIX AA501A option-02 or equivalent . Time code reader 525/60 system: SONY BVG-1500 or equivalent 625/50 system: SONY BVG-1500PS or equivalent Checks .

  • Page 25: Board (Bkdw-505/506)

    TEKTRONIX TSG-422 option-1S or equivalent Perform “6-4. DM-89 Board Replacement” of the mainte- . Video monitor for the serial digital input: nance manual part 1. SONY BVM-1410 (with optional BKM-2085-14) After repairing: or equivalent Perform the electrical adjustments in “6-4. DM-89 Board Replacement”...

  • Page 26: Board

    1-7. Service Action after Replacing or Repairing the Mounted Circuit Board (EQ-56, FP-91, KY-364, LP-81, MB-648, MS-50, PC-70) 1-7-20. EQ-56 Board 1-7-25. MS-50 Board After replacing this board or its NV-RAM After replacing or repairing this board, perform the RF system electrical adjustments of Section 3-5.

  • Page 27: Board

    PTC-69 board is not needed. After replacing or repairing this board, check that the DISK BUSY indicator on the lower control panel is go out 30 seconds after turning on the POWER switch. 1-13 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 28: Board

    1-7. Service Action after Replacing or Repairing the Mounted Circuit Board (SS-63, SSX-1, SWC-30/31, TBC-23) 1-7-36. SS-63 Board 1-7-40. TBC-23 Board After replacing: . The board that a suffix of service parts code is A is Perform “6-6. SS-63 Board Replacement” of the mainte- nance manual part 1.

  • Page 29: Board

    After replacing or repairing this board, check the functions this board. (Refer to Section 5-16.) of the switches and volumes on this board. After replacing the S-tension regulator assembly, perform the tape running adjustment of Section 7-1-2. 1-15 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 30: Perfection After Replacing The Hard Disk Drive

    1-8. Perfection after Replacing the Hard Disk Drive 1-8. Perfection after Replacing the Hard Disk Drive The new-installed head disk drive(s) by replacement requires initializing in the HDD installation menu (D3 : INSTALLATION) of the maintenance mode. The HDD installation menu is automatically activated when the power is turned on first after the hard disk drive has been replaced, then initialize all of the replaced hard disk drive(s) referring to Section 4-3-5 of the maintenance...

  • Page 31: Electrical Alignment Overview

    Time code system adjustment/check for VTR Composite video input Section 4-1 Electrical adjustment for BKDW-505/506 Component video input Section 4-3 Electrical adjustment for BKNW-104 SDTI input Section 4-2 Electrical adjustment for BKNW-103 Digital audio Section 4-4 Electrical adjustment for BKNW-105 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 32: Required Equipment/Tools

    — (Sony part No. A-6332-240-A) Alignment tapes CR2-1B (Sony part No. 9-960-096-01) CR2-1B PS (Sony part No. 9-960-096-51) CR5-1B (Sony part No. 8-960-096-41) CR5-1B PS (Sony part No. 8-960-096-91) CR5-2A (Sony part No. 8-960-097-44) CR5-2A PS (Sony part No. 8-960-098-44) —...

  • Page 33: Internal Video Test Signal

    CAV LEVEL FORMAT, SUB-ITEM 1 : OUTPUT CAV LEVEL. In the 625/50 system have no Betacam format. 75% Reverse Color Bars 100% Color Bars D-1 format D-1 format @fig. 02-02-003 (46)@ @fig. 02-02-001 (46)@ Betacam format (525/60 system only) @fig. 02-02-019 (46)@ DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 34 2-4. Internal Video Test Signal Bowtie H Sweep (BOWTIE mode) @fig. 02-02-004 (46)@ @fig. 02-02-007 (46)@ Pulse and Bar 5 step @fig. 02-02-005 (46)@ @fig. 02-02-008 (46)@ Multi Burst Ramp @fig. 02-02-006 (46)@ @fig. 02-02-009 (46)@ DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 35 2-4. Internal Video Test Signal Shallow Ramp 100% Flat @fig. 02-02-010 (46)@ @fig. 02-02-013 (46)@ Red Signal Black Burst @fig. 02-02-011 (46)@ @fig. 02-02-014 (46)@ 50% Flat Pathological Check Code (V rate) @fig. 02-02-012 (46)@ @fig. 02-02-015 (46)@ DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 36 2-4. Internal Video Test Signal NTC7 (NTSC) (525/60 System only) D-1 format @fig. 02-02-016 (46)@ Betacam format @fig. 02-02-020 (46)@ Line330 (625) (625/50 System only) @fig. 02-02-017 (46)@ DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 37: Electrical Alignment

    Section 3 Electrical Alignment In Section 3 explains the electrical alignment for the DNW-A100/A50/A45 and DNW-A100P/A50P/A45P. The following are the contents in Section 3. Section title Description 3-1. Power Supply Line Alignment Explains the output voltage checks and adjustments for the power supply unit.

  • Page 38: Power Supply Line Alignment

    _15 V CN151-7/MB-648(N-10) CN152-1/MB-648(M-10) +12.0 ±0.6 V +12 V CN201 of Power Supply Unit (MAIN2 Board) +2.50 ±0.15 V +2.5 V CN153-1/MB-648(Q-2) +18.0 ±2.0 V +18 V CN201-1/MAIN2 Measure at the terminal contact of the connected harness wire (brown). DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 39: Output Voltage Adjustment

    Tools List Extension harness set Shorting clip . Digital voltmeter: ADVANTEST TR6845 or equivalent CN201 . Extension cable set (SONY part No. 1-957-071-11) . Shorting clip Preparation 1. Wait more than 30 seconds after turning off the POWER switch. 2. Disconnect the power cord and all cables on connector...

  • Page 40: Dial Pulse Adjustment (Ptc-69 Board)

    8. To turn the search dial to JOG mode, press the JOG button. Dial rubber Search dial assembly Hook PWH2.6 x 5 PTC-69 board Dial knob Harness Test terminals BVTP3 x 8 PTC protecter Mechanical center PTC-69 board Preparation DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 41 If the specification is not satisfied, perform the adjustment. 1RV2/PTC-69 (outside RV) Adj. point: Specification: Duty ratio 0.50 ± 0.04 (A = 4.0 ± 0.3 divisions width) Adjust eight divisions in width Center of jitter Waveform on Oscilloscope DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 42: Demagnetization Head Driving Voltage Adjustment (Ms-50 Board)

    2. Turn on the POWER switch. 3. During play back the inserted cassette tape in PLAY mode, adjust so that the measuring voltage satisfy the specification. 1RV901/MS-50 (P/T-8) Adj. point: Specification: 180 mV dc MS-50 Board (Side A) DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 43: Servo System Alignment

    To perform the servo system alignment for the VTR, prepare the following equipment and fixtures. All the servo adjustments for the VTR are adjusted using . Alignment tapes for DNW-A100/A50/A45: the menus in the maintenance mode. When the MS-50 board or IC9 (NV-RAM) on MS-50 SR2-1 (Part No.

  • Page 44: Servo Adjustment Data Initialization

    4. To exit this menu, press the MENU button once. 3. To execute this adjustment, press the SET button once on the lower control panel. For DNW-A100/A50/A45 in 525/60 system or the DNW- . The execution time is about 150 seconds. A100P/A50P/A45P in 625/50 system, perform steps 5 .

  • Page 45: Rf Switching Position Adjustment

    ITEM-013: 525/625 SYSTEM SELECT. (Refer to Section 7-2-2 of the operation manual.) 10. Perform the same as steps 1 through 8. 11. Return the operation system of the VTR to the custom- er setting in the setup menu ITEM-013. DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 46: Rf System Alignment (Eq-56 Board)

    For the Betacam / Betacam SP format, perform the manu- advance. ally adjustments in the menu of the maintenance mode. Adjustment Items For the DNW-A100/A50/A45’s Betacam / Betacam SP PB function, be sure to adjust in the 525/60 system. Section Item (Section title) and Measurement For the DNW-A100P/A50P/A45P’s Betacam / Betacam...

  • Page 47: Betacam Sx Format Overall Rf System Adjustment

    VIDEO OUTPUT COMPOSITE 3 (SUPER) connector. 3. Enter A17 : A10-A16 ALL ADJUST (A11-A16 ALL . Alignment tape for DNW-A100/A50/A45: ADJUST) in the maintenance mode. SR5-1 (Part No. 8-960-075-01) . Message “Auto Adjust (Press SET)” is displayed on .

  • Page 48: Betacam / Betacam Sp Format Pb System

    (A30 : EQ VR) /A45 A50P/A45P . Extension board: EX-377 (Part No. J-6269-810-A) RF GAIN METAL-Y-A . Alignment tapes for DNW-A100/A50/A45: RF GAIN METAL-Y-B CR5-1B (Part No. 8-960-096-41) RF GAIN METAL-C-A CR5-2A (Part No. 8-960-097-44) RF GAIN METAL-C-B . Alignment tapes for DNW-A100P/A50P/A45P: RF GAIN OXIDE-Y-A CR5-1B PS (Part No.
  • Page 49 PLAY mode. Adj. point: A30 : EQ VR : RF GAIN METAL-C-A Specification: B = 380 ± 20 mV p-p For DNW-A100/A50/A45: CR5-1B 18. Set the oscilloscope’s trigger to the + slope, then For DNW-A100P/A50P/A45P: CR5-1B PS 8.
  • Page 50 CH-2: TP4/DM-89(E-1), GND: E702/DM-89(D-1) 3:00) of the following alignment tape in PLAY mode. 30 Play back the 75% color-bar signal portion (0:00 to For DNW-A100/A50/A45: CR5-2A 3:00) of the alignment tape CR5-2A / CR5-2A PS in For DNW-A100P/A50P/A45P: CR5-2A PS PLAY mode.

  • Page 51: Recording Current Adjustment

    5. To execute the automatic adjustment for the recording connector. current, press the SET button once on the lower . Cleaning tape: BCT-5CLN (Sony’s standard products) control panel. . Recording tape: BCT-SX series (Betacam SX cassette) . Message “Auto Adjust Complete” is displayed on (Sony’s standard products)

  • Page 52: Audio System Adjustment (Apr-12/13 Boards)

    EX-556 (Part No. A-8277-212-A) . For the DIF-44 board and CP-308 board of the BKNW- . Shorting clip . Alignment tape for DNW-A100/A50/A45: 105, there is not adjustment item. However, the function check procedure for the BKNW- CR8-1A (Part No. 8-960-097-45) .
  • Page 53 8 Section 3-6-7 8 Skip 8 Section 3-6-9 (with BKNW-105) (Check) (Check) Monitor line Section 3-6-6 When the analog audio CH1/2/3/4 inputs/outputs are restored after removing BKNW-105 (optional kit), perform the adjustments (checks) for CH1/CH2 and CH3/ CH4 lines. 3-17 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 54: Common Preparation

    –20 –20 –20 TP300 TP400 –3 –3 –3 –3 TP701 –3 >EP–GW< –3 –20 –20 RV300 RV400 E300 E400 E500 E600 E300 E400 COR301 COR401 COR501 COR601 TP700 TP701 APR-12 Board (Side A) APR-13 Board (Side A) 3-18 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 55 8 HIGH/ON 600Z (Set to the right position.) Operation system check Be sure to adjust in the following system. DNW-A100/A50/A45: 525/60 system DNW-A100P/A50P/A45P: 625/50 system If differed, change the operation system using the setup menu ITEM-013 before adjusting. (For the ITEM-013, refer to Section 7-2-2 of the operation manual.)

  • Page 56: Analog Audio Outputs (Ch1/2/3/4) Adjustment (Apr-13 Board)

    2. In C23 : AUDIO TEST SG of the maintenance mode, E300 E400 E500 E600 TP700 select “1KHz SINE 0VU” as test signal. 3. Set the audio analyzer as follows: >EP–GW< Function mode: LEVEL, dBm (600 Z) Input filter: 80 kHz LPF APR-13 Board (Side A) 3-20 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 57: Analog Audio Offsets (Ch3/4) Adjustment (Apr-13 Board)

    20 18 16 20 18 16 20 18 16 20 18 16 TP300 TP400 TP500 TP600 COR301 COR401 COR501 COR601 –20 –20 –20 –20 TP701 –3 –3 –3 –3 TP700 E300 E400 E500 E600 APR-13 Board (Side A) 3-21 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 58: Analog Audio Inputs (Ch3/4) Adjustment (Apr-13 Board)

    RV300 RV400 RV500 RV600 20 18 16 20 18 16 20 18 16 20 18 16 TP300 TP400 TP500 TP600 COR301 COR401 COR501 COR601 –20 –20 –20 –20 –3 –3 –3 –3 TP701 APR-13 Board (Side A) 3-22 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 59: Analog Audio Monitor Outputs (L/R) Adjustment (Apr-12 Board)

    20 18 16 20 18 16 20 18 16 20 18 16 TP300 TP400 TP500 TP600 COR301 COR401 COR501 COR601 –20 –20 –20 –20 –3 –3 –3 –3 TP701 E300 E400 E500 E600 TP700 >EP–GW< APR-13 Board (Side A) 3-23 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 60: Analog Audio Offsets (Ch1/2) Adjustment (Apr-12 Board)

    VAR (R) COR302 COR402 COR302 COR402 TP300 TP400 TP300 TP400 –3 >EP–GW< –3 –3 >EP–GW< –3 –20 –20 –20 –20 RV300 RV400 RV300 RV400 E300 E400 E300 E400 TP701 TP701 APR-12 Board (Side A) APR-12 Board (Side A) 3-24 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 61: Analog Audio Inputs (Ch1/2) Adjustment (Apr-12 Board)

    Figure 2. Waveform of CH1/CH2 Offset Level Adjustment CH2 8 HIGH/ON 600Z (right position) 6. Check that the equipment has warmed up. Before starting the adjustment, warm up the VTR and other equipment through the power for 20 minutes or more. 3-25 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 62 TP700 TP560 COR300 COR400 16 18 20 16 18 20 COR301 COR401 UNITY (L) VAR (L) UNITY (R) VAR (R) COR302 COR402 TP300 TP400 –3 >EP–GW< –3 –20 –20 RV300 RV400 E300 E400 TP701 APR-12 Board (Side A) 3-26 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 63: Lau Pb System Adjustment (Apr-12 Board)

    DNW-A100P/A50P/A45P: 625/50 system. . Extension board: EX-556 (Part No. A-8277-212-A) If differed, change the operation system in the setup menu . Alignment tape for DNW-A100/A50/A45: ITEM-013 before adjusting. (For the ITEM-013, refer to CR8-1A (Part No. 8-960-097-45) Section 7-2-2 of the operation manual.) .
  • Page 64 TP501 TP601 RV602 TP500 TP600 RV603 RV600 RV500 S500 S600 RV503 RV604 RV501 RV601 In the DNW-A100/A50/A45 are not performed the adjust- ments using the metal particle tape. COR100 COR200 RV203 RV103 TP201 TP101 RV200 RV100 COR101 COR201 –3 –3 –20...
  • Page 65 5:55) of the CR8-1A / CR8-1A PS in PLAY mode, measure the audio level on the audio analyzer. measure the audio level on the audio analyzer. For DNW-A100/A50/A45: CR8-1A This measured audio level is a reference level (0 dB). For DNW-A100P/A50P/A45P: CR8-1A PS 7.
  • Page 66 1. Connect the audio level meter to TP501(C-1) on the APR-12 board. GND: E500/APR-12(B-1) 2. Play back the 1 kHz, 0 VU portion (0:00 to 2:55) of the following alignment tape in PLAY mode. APR–12 LOTNO, S NO, For DNW-A100/A50/A45: CR8-1A A No. E600 E500 RV605 RV504...
  • Page 67 5. Connect the audio analyzer’s input to AUDIO OUT- end. 2. For DNW-A100/A50/A45: Play back the 10 kHz, _10 PUT CH1 connector. When the VTR is equipped the BKNW-105, connect it...

  • Page 68: Video System Alignment (Vpr-17 Board)

    TEKTRONIX TSG-170A or equivalent mode. For DNW-A100P/A50P/A45P: TEKTRONIX TSG-271 or equivalent . In the DNW-A100/A50/A45, be sure to adjust in 525/60 . Analog composite video signal generator (Sign is SG2.) system before 625/50 system. For DNW-A100/A50/A45: In the DNW-A100P/A50P/A45P, be sure to adjust in TEKTRONIX 1410 or equivalent 625/50 system before 525/60 system.
  • Page 69 3-7. Video System Alignmnet (VPR-17 Board) 3-7-1. Adjustment Overview Adjustment Items Item Adjustment point Remarks 3-7-2 Preparation in standard system DNW-A100/A50/A45: 525/60 system DNW-A100P/A50P/A45P: 625/50 system 3-7-3 Composite video output level adjustment CH1/CH2 A20 : VPR VR : VIDEO 1/2 LEVEL VIDEO OUTPUT COMPOSITE 1/2...

  • Page 70: Preparation In Standard System

    If differed, change the operation system in the setup menu ITEM-013 before adjusting. (For the ITEM-013, refer to Section 7-2-2 of the operation manual.) 4. For the DNW-A100/A50/A45 only: Set the ITEM-709 and -713 in the setup extended menu as follows: ITEM No.

  • Page 71: Composite Video Output Adjustment (Standard System)

    VIDEO OUTPUT COMPOSITE 3 (SUPER) connector otherwise note. . 75 Z terminator 4. Check the setup extend menu setting. (For the DNW-A100/A50/A45 only) ITEM-713 : VIDEO SETUP REFERENCE LEVEL . Connection 1 4. OUTPUT LEVEL 8 0.0% Composite waveform monitor 5.
  • Page 72 When the adjustment was not performed in step 5, skip 2. In C21 : VIDEO TEST SG of the maintenance mode, over to step 9. select the following test signal. DNW-A100/A50/A45: 75% Color Bars 7. Enter A2F : NV-RAM CONTROL, then execute DNW-A100P/A50P/A45P: 100% Color Bars “SAVE ALL ADJUST DATA”.

  • Page 73: Component Video Output Adjustment (Standard System)

    . 75 Z terminators (3 pieces) monitor as shown Figure “Connection”. 4. Check the setup extend menu settings. Video monitor (For the DNW-A100/A50/A45 only) ITEM-709 : CAV LEVEL FORMAT VIDEO OUTPUT (terminated with 75 Z) COMPOSITE 3 1. OUTPUT CAV LEVEL 8 D-1...
  • Page 74 B = 0 ± 10 ns COMPONENT R-Y COMPONENT B-Y Center markers CH-1/CH-2 CH-1/CH-3 6. To exit A20 : VPR VR, press the MENU button once. 6. To exit the maintenance mode, press the MENU button two times. 3-38 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 75: Component Video Output (Betacam) Adjustment (525/60 System)

    In this adjustment, be sure to perform without using the BNC T adapter extension board. Connection If stopping the extension to the VPR-17 board, wait more than 30 seconds after turning off the POWER switch, before removing the VPR-17 board. 3-39 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 76 If the specification is not satisfied, perform the adjustment. Adj. point: A20 : VPR VR : B-Y OUTPUT LEVEL Specification: B = 757 ± 7 mV p-p COMPONENT R-Y COMPONENT B-Y 8. To exit A20 : VPR VR, press the MENU button once. 3-40 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 77: Reference Color Frame Pulse Check

    Before removing VPR-17 board, wait more than 30 Preparing tools seconds after turning off the POWER switch. . Analog composite video signal generator (Sign is SG1.) For DNW-A100/A50/A45: 2. Check the setting on the sub control panel. TEKTRONIX TSG-170A or equivalent CHARACTER switch 8 ON...
  • Page 78 GND: E501/VPR-17(G-1) phase of CH-2 (TP502) on oscillo- scope is inverted. (a b) TIME: 10 ms/DIV for DNW-A100/A50/A45 20 ms/DIV for DNW-A100P/A50P/A45P TRIG: CH-1: DC 2 V/DIV (Connected SG2’s FRAME REF output) 4. Turn the signal generator SG2’s SC PHASE control...

  • Page 79: Internal 4Fsc Frequency Adjustment

    Adj. point: A20 : VPR VR : INT 4FSC FREQ OUS”. Specification: 14,318,181 ± 50 Hz for DNW-A100/A50/A45 13. To exit A2F : NV-RAM CONTROL, press the MENU 17,734,476 ± 50 Hz for DNW-A100P/A50P/A45P button once. 6. To exit A20 : VPR VR, press the MENU button once.

  • Page 80: Preparation In Another System

    . The settings of the VTR’s switches are the same as the Preparation in standard system. For the DNW-A100/A50/A45 For the DNW-A100P/A50P/A45P 1. Wait more than 30 seconds after turning off the 1.

  • Page 81: Composite Video Output Adjustment (Another System)

    . Y/C DELAY switch 8 PRESET . CHROMA PHASE switch 8 PRESET In the DNW-A100/A50/A45: TEKTRONIX 1751 or 1781R (for 625/50 system) 3. Connect the oscilloscope as shown In the DNW-A100P/A50P/A45P: Connection 1 on Figure “Connections”.
  • Page 82 ON after checking/adjusting.) Output channel [Connection] Adjustment point Specification for Specification for (A20 : VPR VR) DNW-A100/A50/A45 DNW-A100P/A50P/A45P B = 700 ± 7 mV A = 714 ± 7 mV COMPOSITE 1 [Connection 1] VIDEO 1/2 LEVEL (A = 100 ±1 IRE)

  • Page 83: Component Video Output Adjustment (Another System)

    VIDEO OUTPUT CH-3 COMPONENT Before starting the adjustment, warm up the VTR and CH-2 component waveform monitor through the power for 30 a : Use the same length cables 75 Z minutes or more. (0.5 m) Connection 3-47 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 84: Component Video Output (Betacam) Adjustment (For Dnw-A100P/A50P/A45P Only In 525/60 System)

    A45P only in 525/60 System) For the component video output (Betacam) adjustment to COMPONENT Y DNW-A100P/A50P/A45P under 525/60 system, perform Section 3-7-5. COMPONENT R-Y COMPONENT B-Y 6. To exit A20 : VPR VR, press the MENU button once. 3-48 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 85: Analog Betacam Pb System Alignment

    Section 3-6. . Analog component video signal generator: TEKTRONIX TSG-300 or equivalent For NTSC model (DNW-A100/A50/A45), be sure to It is required that the component video signal generator adjust in the 525/60 system. is able to output the 50% bowtie signal.
  • Page 86 Be sure to perform the adjustment (Section 3-8-5) using the network analyzer at a later date. OMC: Over-Modulation Compensation circuit (Continue) *1: RV103 is not equipped on the DM-89 board of LOT Nos. 407 and higher. 3-50 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 87 VIDEO OUTPUT COMPONENT Y A32 : DM VR 1 : EQ1 OXIDE-Y-B Data save A3F : NV-RAM CONTROL 3-8-13 Drop-out compensation equalizer adjustment METAL Y 1RV201/DM-89 TP203/DM-89 METAL C 1RV401/DM-89 TP403/DM-89 OXIDE Y 1RV202/DM-89 RV202/DM-89 OXIDE C 1RV402/DM-89 RV402/DM-89 (Continue) 3-51 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 88 *2: RV102, RV202, RV404, and RV604 are not equipped on the TBC-24 board of board number suffixes 13 and higher. *3: This adjustment is performed only if RV303 on the TBC-24 board was replaced or it was turned by mistake. 3-52 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 89 *8: RV504 is not equipped on the TBC-24 board of board number suffixes 11, 12, and 13. *9: If the specification is not satisfied by adjusting RV200 on TBC-23 board, change the data of A37 : TBC VR : VISC PHASE. 3-53 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 90: Common Preparation

    3-8. Analog Betacam PB System Alignment 3-8-2. Common Preparation 3-8-2. Common Preparation 3. For the DNW-A100/A50/A45 only: Set the ITEM-709 and -713 in the setup extended menu as follows: Perform the settings (switches, setup extend menu, etc.) ITEM No. Customer Setting at toward the VTR before starting the adjustments.

  • Page 91: Initial Data Settings

    EQ1 OXIDE-C-A OUS”. EQ1 OXIDE-C-B 5. To exit A3F : NV-RAM CONTROL, press the MENU A33 : DM VR 2 MAIN METAL-Y-A button once. MAIN METAL-Y-B MAIN METAL-C-A MAIN METAL-C-B MAIN OXIDE-Y-A MAIN OXIDE-Y-B MAIN OXIDE-C-A MAIN OXIDE-C-B 3-55 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 92: Eq Rf Output Level Adjustment

    1 ns TP403 E103 TP202 RV205 TP404 .75 Z : TP302 TP204 TP300 Output level : 200 ±30 mV TP100 E301 (at 9 MHz) TP203 E101 E902 Connection and Setting of Network Analyzer DM-89 Board (Side A) 3-56 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 93 (If not, set them to the specified data.) [ns] Initial data Initial data Item (A33 : DM VR 2) for NTSC for PAL MAIN METAL-Y-A MAIN METAL-Y-B MAIN METAL-C-A MAIN METAL-C-B [MHz] MAIN OXIDE-Y-A MAIN OXIDE-Y-B MAIN OXIDE-C-A MAIN OXIDE-C-B 3-57 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 94 RV201 RV308 RV407 TEST RV108 E104 E302 E102 TP104 S102 TP303 TP103 TP304 RV405 TEST S101 RV211 RV212 TP102 TEST TP403 E103 TP202 RV205 TP404 TP302 TP204 TP300 TP100 E301 TP203 E101 E902 DM-89 Board (Side A) 3-58 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 95 8. Set the data of “MAIN METAL-C-B” in A33 : DM [ns] VR 2 to the identical data value as “MAIN METAL- C-A”. 9. To exit A33 : DM VR 2, press the MENU button once. [MHz] 3-59 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 96 12. To perform the tape operation, press the SET button [MHz] once. 13. Eject the alignment tape. PAL model 14. To operate the maintenance mode, press the MENU [ns] button once. 15. To exit A34 : DM VR 3, press the MENU button once. [MHz] 3-60 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 97 RV308 RV201 RV407 TEST RV108 E104 E302 E102 TP104 S102 TP303 TP103 TEST TP304 RV405 S101 RV211 RV212 TP102 TEST TP403 E103 TP202 RV205 TP404 TP302 TP204 TP300 TP100 E301 TP203 E101 E902 DM-89 Board (Side A) 3-61 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 98 9. Set the data of “MAIN OXIDE-Y-B” in A33 : DM VR 2 to the identical data value as “MAIN OXIDE-Y-A”. PAL model 10. To exit A33 : DM VR 2, press the MENU button once. [ns] [MHz] 3-62 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 99 RV201 RV407 RV103 E302 E104 TEST RV108 E102 TP104 S102 TP303 S101 TP304 TEST RV405 RV211 RV212 TP102 TEST TP403 TP202 RV205 TP103 TP404 TP302 E103 TP204 TP300 TP100 E301 TP203 E101 E902 DM-89 Board (Side A) 3-63 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 100: Cosine Equalizer Provisional Adjustment

    . Message “Save Complete” is displayed on the video monitor when this data save is completed normally. When loading the previous data without save the current adjusted data, execute “ALL DATA PREVI- OUS”. 4. To exit the maintenance mode, press the MENU button four times. 3-64 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 101 RV407 E302 RV103 TEST RV108 E104 RV302 E102 TP104 S102 TP303 TP304 TP103 RV405 TEST S101 RV211 RV212 TP102 TEST TP403 E103 TP202 RV205 TP404 TP302 TP204 TP300 TP100 E301 TP203 E101 E902 DM-89 Board (Side A) 3-65 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 102: Dm Rf Output Level Adjustment

    Flat field signal (24:00 to 26:00) of oscilloscope through the power for 20 minutes or more. CR5-1B (NTSC) / CR5-1B PS (PAL) 1RV406/DM-89(C-5) Adj. point: Specification: B = 400 ± 40 mV p-p 3. Eject the alignment tape. 3-66 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 103 TEST RV308 E302 TEST RV108 E104 RV406 E102 TP104 S102 TP303 TP304 TP103 RV405 TEST RV212 S101 RV211 TP102 TEST TP403 E103 TP202 RV205 TP404 TP302 TP204 TP300 TP100 E301 TP203 E101 E902 DM-89 Board (Side A) 3-67 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 104: Omc Carrier Balance Adjustment

    RV201 RV407 RV307 E302 TEST E104 E102 RV308 S102 TP303 TP103 RV108 TP304 RV405 TEST S101 RV211 RV212 TP102 TEST TP403 E103 TP202 RV205 TP404 TP302 TP204 TP300 TP100 E301 TP203 E101 E902 DM-89 Board (Side A) 3-68 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 105 Specification: A > 35 dB NTSC model 4.9 MHz 9.8 MHz PAL model 5.5 MHz 11.0 MHz PAL model 4.9 MHz 9.8 MHz 3. Eject the alignment tape. 6.25 MHz 12.5 MHz 3. Stop the playback of the alignment tape. 3-69 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 106 8.9 MHz 17.7 MHz 2. Stop the playback of the alignment tape. 3. Stop the playback of the alignment tape. It is not necessary to eject the alignment tape when perform subsequent “3-8-10. Demodulator Limiter Balance Adjustment”. 3-70 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 107: Omc Carrier Balance Provisional Adjustment

    RV201 RV407 RV307 E302 TEST E104 E102 RV308 S102 TP303 TP103 TP304 RV108 TEST RV405 S101 RV211 RV212 TP102 TEST TP403 E103 TP202 RV205 TP404 TP302 TP204 TP300 TP100 E301 TP203 E101 E902 DM-89 Board (Side A) 3-71 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 108: Demodulator Limiter Balance Adjustment

    SWP TIME : 100 ms Connection and Setting of the Spectrum Analyzer 6. Check that the equipment has warmed up. Before starting the adjustment, warm up the VTR and other equipment through the power for 20 minutes or more. 3-72 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 109 TP304 RV405 TEST S101 RV211 RV212 TP102 TEST 8.9 MHz 17.7 MHz TP403 E103 TP202 RV205 TP404 TP302 TP204 TP300 TP100 E301 TP203 E101 4. Stop the playback of the alignment tape. E902 DM-89 Board (Side A) 3-73 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 110: Non-Liner Output Level Adjustment

    RV103 S301 RV202 TEST RV308 RV201 RV407 E302 TEST RV108 E104 E102 TP104 S102 TP303 TP103 TP304 TEST RV405 S101 RV211 RV212 TP102 TEST TP403 E103 TP202 RV205 TP404 TP302 TP204 TP300 TP100 DM-89 Board (Side A) 3-74 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 111: Non-Liner Output Level Adjustment

    PAL: 0:00 to 3:00 in CR5-2A PS 3. Eject the alignment tape. 1RV704/DM-89(B-1) Adj. point: Specification: C = 700 ± 10 mV 3. Stop the playback of the alignment tape. 4. For NTSC model only: Eject the alignment tape. 3-75 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 112: Pb Frequency Response Adjustment

    6. Check the setup extend menu settings. (NTSC model only) ITEM-709: CAV LEVEL FORMAT 8 B-CAM 1. OUTPUT CAV LEVEL ITEM-713: VIDEO SETUP REFERENCE LEVEL 8 0.0% 0. MASTER LEVEL 8 MSTER 3. BETACAM PB LEVEL 8 MSTER 4. OUTPUT LEVEL 3-76 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 113: Check That The Equipment Has Warmed Up

    3. To perform the tape operation, press the SET button once. Connection 8. Check that the equipment has warmed up. Before starting the adjustment, warm up the VTR and other equipment through the power for 20 minutes or more. 3-77 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 114: Metal Y Adjustment

    9. During play back the alignment tape in PLAY mode, check the playback picture on the video monitor. PB portion: The same as step 2 Specification: It has not flicker. 10. Reconnect the video monitor to VIDEO OUTPUT COMPOSITE 3 (SUPER) connector. 3-78 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 115 9. Check that the B-Y output signal levels at every frequencies are within specifications shown below. If the B-Y output signal is out of specifications, perform fine adjustment for R-Y until the specifica- tions for R-Y and B-Y output signals. 10. Eject the alignment tape. 3-79 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 116 (6) To exit A34 : DM VR 3, press the MENU button once. side), and judge a lower level channel. (7) Enter A32 : DM VR 1. (8) To perform the tape operation, press the SET button 3-80 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 117 . Message “Save Complete” is displayed on the video monitor when this data save is completed normally. When loading the previous data without save the current adjusted data, execute “ALL DATA PREVI- OUS”. 2. To exit the maintenance mode, press the MENU button four times. 3-81 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 118: Drop-Out Compensation Equalizer Adjustment

    TEST RV308 RV407 E302 RV108 TEST E104 E102 TP104 S102 TP303 TP103 TP304 RV405 TEST S101 RV211 RV212 TP102 TEST TP403 E103 TP202 RV205 TP404 TP302 TP204 TP300 TP100 TP203 E301 E101 E902 DM-89 Board (Side A) 3-82 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 119: Dm Rf Output Level Readjustment

    Readjust the DM RF output level referring to Section 3-8-7 _2.0 again. NTSC model 100% [MHz] PAL model 100% [MHz] 4. Stop the playback of the alignment tape. It is not necessary to eject the alignment tape when perform subsequent “3-8-14. DM RF Output Level Readjustment”. 3-83 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 120: Rf Envelope Adjustment

    4. Check the setting on the sub control panel. KEY INHIBIT switch 8 OFF 5. Check that the equipment has warmed up. Before starting the adjustment, warm up the VTR and oscilloscope through the power for 20 minutes or more. 3-84 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 121 RV308 RV201 RV407 E302 TEST RV108 E104 E102 TP104 S102 RV405 TP303 TP103 TP304 TEST S101 RV211 RV212 TP102 TEST TP403 E103 TP202 TP404 TP302 TP204 TP300 RV205 TP100 E301 E101 E902 TP203 DM-89 Board (Side A) 3-85 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 122: Search Picture Adjustment

    RV201 RV308 RV407 E302 TEST RV108 E104 E102 TP104 S102 TP303 TP304 TP103 TEST RV405 S101 RV211 RV212 TP102 TEST TP403 E103 TP202 RV205 TP404 TP302 TP204 TP300 TP100 E301 TP203 E101 E902 DM-89 Board (Side A) 3-86 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 123 Check: C = 100 ± 10 % (0 ± 1.0 dB) It is not necessary to eject the alignment tape when perform subsequent “3-8-17. Guard Band Width Normal playback Adjustment”. (100%) +24 times speed play back REW playback 3-87 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 124: Guard Band Width Adjustment

    GUARD BAND OXIDE-C 31 (30 29 (16 *: When the board number suffix of the DM-89 board is 13. 3. To perform the tape operation, press the SET button once. 4. Set the CHARACTER switch to OFF. 3-88 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 125 Add 1 to the data of “GUARD BAND OXIDE-C” in A35 : DM VR 4. (4) To perform the tape operation, press the SET button once. (5) Set the CHARACTER switch to OFF. (6) Perform step 2 again. 3-89 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 126: Component Output Level Adjustment

    (Refer to step 1 in “3-8-2. OUS”. Common Preparation”.) 4. To exit A3F : NV-RAM CONTROL, press the MENU button once. 5. To exit the maintenance mode, press the MENU button three times. 3-90 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 127 POWER switch. 3. Eject the alignment tape. TBC-24 board (suffix-11 and 12) RV200 RV500 RV501 RV300 RV101 RV201 TBC-24 board (suffix-13 and higher) RV201 RV101 RV500 RV501 RV504 RV300 RV101 and RV201 on TBC-24 Board 3-91 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 128 R-Y and B-Y signals satisfy the specification. PB portion: 75% color-bar signal (0:00 to 3:00) of CR5-2A PS Adj. point: 1RV704/DM-89(B-1) Specification: B = 525 ± 5 mV 3. Eject the alignment tape. RV704 RV504 DM-89 board RV504 and RV704 on DM-89 Board 3-92 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 129: A/D Clamp Dc Level Adjustment

    TP301 TP406 RV404 RV601 LV601 LV401 RV604 RV401 TP302 TP405 E301 E502 It is not necessary to eject the alignment tape when TP605 TP303 perform subsequent “3-8-20. VCO Lock-in Range Adjustment”. TBC-24 Board (Side A) (Suffix-11 and-12) 3-93 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 130: Vco Lock-In Range Adjustment

    TP406 RV404 TP603 TP603 RV601 RV601 LV601 LV601 LV401 E301 LV401 E301 RV401 RV401 RV604 TP302 TP405 E502 E502 TP405 TP605 TP605 TP303 TP303 TBC-24 Board (Side A) (Suffix-11 and-12) TBC-24 Board (Side A) (Suffix-13 and Higher) 3-94 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 131: Tbc Vco Free-Running Adjustment

    1. Set RV303/TBC-24(D-5) board to the specified E302 RV503 RV303 TP602 TP403 TP604 TP606 RV502 TP404 TP402 TP406 TP603 LV601 RV601 LV401 RV401 TP405 E301 E502 TP304 TP605 TP303 TBC-24 Board (Side A) (Suffix 16 or Higher) position as shown figure below. 3-95 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 132: Fast Vco Tracking Adjustment

    PB portion: 75% color-bar signal (0:00 to 3:00) of RV303 TP602 TP403 TP604 CR5-2A (NTSC) / CR5-2A PS (PAL) TP606 RV502 TP404 TP402 TP406 7. Eject the alignment tape. TP603 LV601 RV601 LV401 RV401 TP405 E301 E502 TP605 TBC-24 Board (Side A) 3-96 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 133: Pb Video Phase Adjustment

    CH-B CH-1 CH-2 CH-3 VIDEO INPUT REF VIDEO 75 Z 75 Z (75 Z ON) VIDEO OUTPUT COMPONENT Video monitor Cable length a: 0.5 m VIDEO OUTPUT (terminated with 75 Z) b: 1.0 m COMPOSITE 3 Connection 3-97 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 134 50% position at falling edge of the H SYNC 10. Stop the playback of the alignment tape. of CH-B to the identical position as CH-A using the SYNC control VR on the sub control panel. 3-98 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 135 _1 so that the bowtie dip point moves closer to the TBC-24 board (suffix-13 and higher) center marker. RV300 RV201 RV500 RV501 RV504 RV101 (5) To perform the tape operation, press the SET button once. (6) Perform step 2 again. RV300 on TBC-24 Board 3-99 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 136: Tbc Y/C Delay Rough Adjustment

    3. BETACAM PB LEVEL 8 MSTER 4. OUTPUT LEVEL 8 MSTER 8. Check that the equipment has warmed up. Before starting the adjustment, warm up the VTR and other equipment through the power for 20 minutes or more. 3-100 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 137 E302 RV503 E302 RV303 RV303 TP602 TP403 TP602 TP403 RV502 RV502 TP604 TP606 TP604 TP404 TP606 TP404 TP603 TP402 TP301 TP406 TP402 RV404 TBC-24 Board (Side A) (Suffix-11 and -12) TBC-24 Board (Side A) (Suffix-13 and Higher) 3-101 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 138: Impact Error Offset Adjustment

    6. Check the setup extend menu settings. (NTSC model only) ITEM-709: CAV LEVEL FORMAT 1. OUTPUT CAV LEVEL 8 B-CAM ITEM-713: VIDEO SETUP REFERENCE LEVEL 8 0.0% 0. MASTER LEVEL 8 MSTER 3. BETACAM PB LEVEL 8 MSTER 4. OUTPUT LEVEL 3-102 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 139: Tbc Y/C Delay Adjustment

    S No. A No. E100 E501 TP500 RV400 RV402 TP300 TP401 TP601 E302 RV503 RV303 TP602 TP403 TP604 TP606 RV502 TP404 TP402 TP406 TP603 LV601 RV601 LV401 RV401 TP405 E301 E502 TP605 TP303 TBC-24 Board (Side A) 3-103 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 140 3. BETACAM PB LEVEL 8 MSTER 4. OUTPUT LEVEL 8 MSTER 8. Check that the equipment has warmed up. Before starting the adjustment, warm up the VTR and other equipment through the power for 20 minutes or more. 3-104 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 141: Visc Phase Adjustment

    75 Z) COMPOSITE 3 RV500 RV501 *: VISC phase adjustment tool TBC-24 board (suffix-13 and higher) For PAL model only (NTSC model: through) RV201 RV300 RV101 RV500 RV501 RV504 Connection RV500, RV501, and RV504 on TBC-24 Board 3-105 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 142 8 MSTER 8 MSTER 4. OUTPUT LEVEL 8. Check that the equipment has warmed up. Before starting the adjustment, warm up the VTR and other equipment through the power for 20 minutes or more. RV200 on TBC-23 Board 3-106 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 143 Turn the PHASE control knob so that the beam spot (SYNC) moves in the shortest route to 0 degree. VISC NTSC model +15d _15d SYNC PAL model VISC PAL model +15d _15d SYNC Composite waveform/vector monitor (VECTOR mode) Composite waveform/vector monitor (SCH mode) 3-107 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 144 When loading the previous data without save the current adjusted data, execute “ALL DATA PREVI- OUS”. 13. To exit A3F : NV-RAM CONTROL, press the MENU button once. 14. To exit the maintenance mode, press the MENU button three times. 3-108 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 145: Tbc Remote Control Offset Adjustment (Fp-91 Board)

    Removing of Audio Level Meter Module 4. Connect the power cord. (POWER switch is OFF.) 5. Turn on the POWER switch and warm up the VTR and digital voltmeter through the power for 20 minutes or more. 3-109 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 146 . 3. Reattach the panel for the upper control panel. 4. When the shorting connector was used, remove it. >EP–GW< MADE IN JAPAN FP-91 1-661-138- CN224 CN31 A No. LOTNO, S NO, FP-91 Board (Side A) 3-110 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 147: Sdi/Sdti I/O Lines Adjustment (Cp-297 Board)

    Manually adjustment is not needed when the automatic output in the VTR. adjustment can be is performed in the VTR. For the DNW-A100/A100P only is applied the SDTI input function by the optional kit (BKNW-103). When performing the automatic adjustment In these electrical adjustments, adjust each VCO free- .

  • Page 148: Vco Free-Running Frequency Automatic Adjustment

    CP-297 board and MB-647 board. (In the time data display area, “PUSH SET” is dis- If no abnormality is found in the connection, the CP-297 played.) board or DIF-42 board is considered to be defective. 3-112 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 149: Vco Free-Running Frequency Manually Adjustment

    6. Turn the search dial in FORWARD (2) direction to TP100 move the *-mark to the line of the adjustment data . E301 E500 (Displays the item title in the time data display area, TP506 TP300 TP301 “SDI ENC” for example.) DIF-42 Board (Side A) 3-113 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 150: Ltc Alignment And Full Erasure Current Check (Tc-96 Board)

    Prepare either SR5-1 (for 525/60 system) or SR5-1P (for 625/50 system) in accordance with the operation system to be adjusted. . Recording tape: BCT-SX series (Betacam SX cassette) (Sony’s standard products) For this recording tape, prepare the virgin tape or no recorded tape that erased using the tape eraser, etc. in advance.

  • Page 151: Ltc Playback Level Check

    Before starting the adjustment, warm up the VTR and oscilloscope through the power for 10 minutes or more. 4. Eject the alignment tape. SS-63 board (Side A) TC-96 board (Side A) E100 TP325 E300 TP102 TP308 TP304 >EP–GW< S101 3-115 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 152: Ltc Recording Level Check

    TEKTRONIX 2465B or equivalent CH-1: TP100/TC-96(A-2), DC 100 mV/DIV . Recording tape: BCT-SX series (Betacam SX cassette) GND: TP101/TC-96(A-3) (Sony’s standard products) TIRG: TP325/SS-63(A-1), GND: E100/SS-63(A-1) TIME: 100 µs/DIV For this recording tape, prepare the virgin tape or no 2. Insert the recording tape.

  • Page 153: Full Erasure Current Check

    The same as Section 3-11-4 HEWLETT-PACKARD HP3400A or equivalent . Recording tape: BCT-SX series (Betacam SX cassette) (Sony’s standard products) For this recording tape, prepare the virgin tape or no recorded tape that erased using the tape eraser, etc. in advence.

  • Page 155: Electrical Alignment For Optional Boards

    6. How to Save the Data (1) Turn the search dial and set the *mark to A2F: NV-RAM CONTROL. (2) Push the SET button. (3) Turn the search dial and set the *mark to “SAVE ALL ADJUST DATA” (4) Push the SET button. DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 156: Board (Bkdw-505/506)

    A24: INPUT CF DETECT VIDEO OUTPUT COMPOSITE 2 Data save A2F: NV-RAM COMTROL Equipment BKDW-505 (For DNW-A100/A50/A45) Oscilloscope (TEKTRONIX 2465B or equivalent) Analog composite signal generator (TEKTRONIX TSG-170A or equivalent) NTSC waveform/vector monitor (TEKTRONIX 1750 or equivalent) Video monitor Extension board EX-377: Part No.J-6269-810-A (Board suffix of the DEC-65 board is -11 only.)
  • Page 157 (75 Z ON) COMPOSITE 3 Video monitor Connection 2 Oscilloscope Analog composite signal generator (170A/271) TEST SIGNAL BLACK DNW + BKDW-505/506 Waveform/vector monitor (1750/1751) or oscilloscope REF IN VIDEO OUTPUT COMPOSITE 2 VIDEO INPUT COMPOSITE 3 COMPOSITE Video monitor DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 158 The sub mode and menu of the maintenance mode that is used in Section 4-1 is as shown below. M0: TAPE MAINTENANCE C2: AUDIO/VIDEO CHECK C21: VIDEO TEST SG C22: MULTI LOOP (10 TIMES) A2: AUDIO/VIDEO ADJUST A24: INPUT CF DETECT A25: DEC VR A26: DEC VR (LOOP) A2F: NV-RAM CONTROL DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 159 Specification: Check that the difference of the pedestal portion is not recognized. DEC-65E DEC-65E RV30 0 DECORDER DECORDER CLOCK GEN CLOCK GEN DUS-722 ANALOG INPUT ANALOG INPUT R V2 I C2 0 3 Suffix No. -12 and higher Suffix No. -11 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 160 Specification: Adjust the end of the burst signal to the Specification: Adjust the end of the burst signal within 7.45 to 7.55 us. zero cross point within 7.40 to 7.50 us. DEC-65E DECORDER CLOCK GEN DUS-722 ANALOG INPUT IC203 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 161 (7) Select A2F: NV-RAM CONTROL and save the adjusted data in NV-RAM (execute “SAVE ALL ADJUST DATA”). (8) Check that the message “Save Complete” is displayed on the video monitor screen. (9) Push the MENU button once so as to exit A2F: NV-RAM CONTROL. DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 162 (7) Select A2F: NV-RAM CONTROL and save the adjusted data in NV-RAM (execute “SAVE ALL ADJUST DATA”). (8) Check that the message “Save Complete” is displayed on the video monitor screen. (9) Push the MENU button once so as to exit A2F: NV-RAM CONTROL. DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 163 (9) Select A2F: NV-RAM CONTROL and save the adjusted data in NV-RAM (execute “SAVE ALL ADJUST DATA”). (10)Check that the message “Save Complete” is displayed on the video monitor screen. (11)Push the MENU button once so as to exit A2F: NV-RAM CONTROL. DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 164 (5) Check that the waveform of the pedestal portion satisfies the specification. VIDEO OUTPUT COMPOSITE 2 Specification: Check that the difference of the pedestal portion is not recognized. (5) When the specification is not satisfied, perform “1. Pedestal Level Adjustment” of Section 4-4-1. Adjustment again. 4-10 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 165 (8) Select A2F: NV-RAM CONTROL and save the adjusted data in NV-RAM (execute “SAVE ALL ADJUST DATA”). (9) Check that the message “Save Complete” is displayed on the video monitor screen. (10)Push the MENU button four times so as to exit the maintenance mode. 4-11 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 166: Board (Bknw-103)

    Connect the equipment described above as shown below. DNW + BKNW-103 Composite monitor VIDEO OUTPUT COMPOSITE 3 (75 Z termination) D713 Oscilloscope CH-2 Probe CH-2 OUT TP109 Frequency counter DIF-42 board Setting of Unit Side Turn on the power. 4-12 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 167 (5) Wait for 10 minutes under power on state. (6) Check the value of the frequency counter satisfies the specification. (7) Push the MENU button four times so as to exit the maintenance mode. (8) Perform the operation check referring to the next page. 4-13 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 168: Operation Check

    If the SDTI indicator does not illuminate or blinks, check that the harnesses or cables are connected accurately. (6) Eject the tape. (7) Reset the OUT REF switch on the sub control panel to its previous state. (8) Disconnect the BNC cable. 4-14 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 169: Board (Bknw-104)

    A22: AD VR(LOOP): Y FREQ COMP SDI OUTPUT A22: AD VR(LOOP): R-Y FREQ COMP SDI OUTPUT A22: AD VR(LOOP): B-Y FREQ COMP SDI OUTPUT Data save A2F: NV-RAM CONTROL Component video Betacam level check and adjustment (In 625/50 system) 4-15 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 170 INPUT OUTPUT VIDEO COMPONENT WFM300A a: Cable; 5C-2V 0.5 m x 6 Connection 3 Video monitor VIDEO OUTPUT (75 Z COMPOSITE 3 termination) SDI OUTPUT OUTPUT INPUT WFM601i 75 Z a: Cable ; 5C-2V 0.5 m 4-16 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 171 UNDO RECALL DELETE AUDIO EVENT FEED PREVIEW/ EJECT PLAY F FWD STOP REVIEW AUTO EDIT ENTRY INDEX This figure is for DNW-A100. Upper/Lower Control Panels VIDEO CHROMA SET UP Y/C DELAY CHROMA PHASE SYNC EMPHASIS CHARACTER DOLBY OUT REF PROCESS...
  • Page 172 8. The check and adjustment of the component video Betacam level can be performed when this unit operates in 525/60 system. Wait more than 30 minutes after turning on the power, then perform the check and adjustment. 4-18 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 173 Section 6-9-2 of the maintenance manual part 1. (Electrical adjustment after replacement of the VPR-17 board.) COMPONENT Y COMPONENT B-Y COMPONENT R-Y Specification : A = 700 ±7 mV Specification : B = 700 ±7 mV p-p Specification : C = 700 ±7 mV p-p 4-19 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 174 Adjustment” of Section 6-9-2 of the maintenance manual part 1. (Electrical adjustment after replace- ment of the VPR-17 board.) COMPONENT Y COMPONENT R-Y COMPONENT B-Y Specification : A = 714 ±7 mV Specification : B = 757 ±7 mV p-p Specification : C = 757 ±7 mV p-p 4-20 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 175 Specification : B = 0 ±10 ns (7) Reset the setting of S1100-1 on the SS-63 board to its previous state. (8) When this unit operates in 525/60 system, reset the ITEM-709 and 713 to their previous state. 4-21 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 176 (10)Select A2F: NV-RAM CONTROL and save the adjusted data in NV-RAM (execute “SAVE ALL ADJUST DATA”). (11)Check that the message “Save Complete” is displayed on the video monitor screen. (12)Push the MENU button once so as to exit A2F: NV-RAM CONTROL. 4-22 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 177 (11)Select A2F: NV-RAM CONTROL and save the adjusted data in NV-RAM (execute “SAVE ALL ADJUST DATA”). (12)Check that the message “Save Complete” is displayed on the video monitor screen. (13)Push the MENU button once so as to exit A2F: NV-RAM CONTROL. 4-23 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 178 (9) Select A2F: NV-RAM CONTROL and save the adjusted data in NV-RAM (execute”SAVE ALL ADJUSTMENT DATA” ) . (10)Check that the message “Save Complete” is displayed on the monitor screen. (11)Push tne MENU button once so as to exit A2F: NV-RAM CONTROL. 4-24 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 179 [|Supplement|] The signal after looping is displaied in a state of overlapping on 1st signal on the screen of the waveform monitor. They appear that the 1st signal is freezing and the signal after looping is changing the fluctuation level. 4-25 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 180 (13)Check that the message “Save Complete” is displayed on the video monitor screen. (14). For 525/60 system Push the MENU button four times so as to exit the maintenance mode. . For 625/50 system Perform “8. Component Video Betacam Level Check and Adjustment”. 4-26 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 181 (7) Return the SUB-ITEMs of the setup extended menus ITEM-709 and ITEM-713 to their previous settings. (8) Switch to the 625/50 system by the setup menu ITEM-013. (Refer to Section 7-2-2 of the operation manual.) (9) Reset the setting of S1100-1 on the SS-63 board to its previous state. 4-27 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 182: Board And Dif-44 Board (Bknw-105)

    S1100 SS-63 board Set S1100-1 to ON Check VIDEO INPUT Audio selection function AUDIO INPUT/MIXING/MONITOR Level meters SELECT Switch selector switch SELECT buttons DIGITAL VIDEO HYBRID RECODER DNW-A100 0• 0• 0• 0• POWER -10• -10• -10• -10• 2• -20• -20•...
  • Page 183 (25)Push the F FWD button. = Skips to the end of the MASTER FILE that is recorded in step (13) as a player. (26)Push the INDEX button to illuminate, and push the REW button. = Skips to the beginning of the MASTER FILE that is recorded in step (13) as a player. 4-29 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 184 (40)Push the SET button to exit the setup menu mode. (41)Set S1100-1 on the SS-63 board to its previous state. (42)Delete the file that is recorded. (Refer to “Chapter 5. Editing Using the Built-in Hard Disk” of the operation manual.) 4-30 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 185: Index

    Full-erase Head Replacement 5-160 5-26. Cleaning Solenoid Replacement 5-165 5-27. Reel Shift Gear Replacement 5-171 5-28. Reel Shift Motor Replacement 5-176 5-29. Cassette Compartment Motor Replacement 5-181 5-30. Power Supply Block Replacement 5-185 5-31. Hard Disk Drive Replacement 5-189 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 186 Refer to Section 5-32-11. SE-344 Replace the whole reel FG assembly including the SE-344 board. Refer to the exploded views in Maintenance Manual Part 2 Vol.2 Section 2. After replacement, perform the reel rotation sensor position adjustment (Section 5-9-7). DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 187 Plug-in board TC-96 Refer to Section 5-32-15. TR-78 Replace with an assembled part. (S tension regulator assemby, refer to Section 5-16.) TR-79 Refer to Section 5-32-16. VPR-17 Plug-in board VR-223 Refer to Section 5-32-17. VR-224 Refer to Section 5-32-18. DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 188: Threading End Mode And Unthreading End Mode

    TG-8 (T tension regulator) M gear AT head AT erase head TG-7 TG-9 TG-6 TG-4 Capstan Pinch roller TG-5 (Threading roller) TG-1 (S tension regulator) Tape cleaner TG-0 Full-erase head CTL head TG-2 (Entrance guide) TG-10 Slant guide Threading End Mode DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 189 AT erase head TG-3 (Exit guide) TG-8 (T tension regulator) TG-4 TG-7 Capstan Full-erase head TG-0 Tape cleaner CTL head TG-2 TG-6 Pinch roller TG-5 Slant guide TG-10 TG-1 (Entrance guide) (Threading roller) (S tension regulator) Unthreading End Mode DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 190: L Cassette Position And S Cassette Position

    Method 1: Press the switch S100 (F-1/side A) on the SS-63 board under power-on state. Method 2: Turn the drive gear in the direction of the arrow C. T reel table S reel table Drive gear L Cassette Position DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 191 Method 1: Press the switch S100 (F-1/side A) on the SS-63 board under power-on state. Method 2: Turn the drive gear in the direction of the arrow D. T reel table S reel table Drive gear S Cassette Position DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 192: Basic Knowledge

    (2) Stop Washer and E Ring It should not be used the stop washer and E ring once again. It is recommended checking a required stop washer and E ring before replacement, and preparing more than required number. DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 193: Upper Drum Assembly Replacement

    24. Adjust the AT Head Position (Refer to Section 7-1-9.) 25. Perform the Electrical Adjustments after Drum Replacement (Refer to Section 6.) Note When the rotary head tip was worn or damaged, replace the whole upper drum assembly. It cannot be replaced only head tip. DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 194 (4) Remove the screw, shift the video head Height Harness cleaner assembly in the direction indicated by determing plate the arrow A, and remove it from the height CN851 determing plate. PD-35 board Sensor holder Remove the Rotary Head Cleaner Assembly 5-10 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 195 Height determining 5. Remove the Height Determining Plate plate (1) Remove the two screws using a hexagonal wrench driver. (2) Raise the height determining plate just above, then remove. Drum support Knob Remove the Height Determining Plate 5-11 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 196 If the four upper drum securing screws are not loosened completely and the hexagon screw of the upper drum remover is rotated, the lower drum may be damaged. Upper drum remover Remove the Upper Drum Assembly 5-12 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 197 Patterns points and patterns. (Wipe with a dry cleaning cloth) . 20 contacting points of upper drum . 56 patterns of upper drum Cleaning . 56 contacting points of lower drum . 20 patterns of lower drum 5-13 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 198 (6) Set the torque screwdriver to 58.8 N . m{6.0 kgf . cm}. Tighten the four screws in the same sequence Attach the upper Drum Assembly as in step (5) using a torque screwdriver. 5-14 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 199 Turn the knob of the demagnetization head Knob assembly clockwise until it will be stopped. Tightening torque : 78.4 x 10 N . m {8 kgf . cm} Attach the Height Determining Plate/ Put the Demagnetization Head Aassembly Back 5-15 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 200 Never apply excessive force to the cover. 14. Connect the Flexible Board Connect the flexible board to connector CN2 on the SE-341board. Tightining torque : 14.7 x 10 N . m {1.5 kgf . cm} Attach the Brush Slip Ring Assembly 5-16 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 201 24. Adjust the AT Head Position Refer to Section 7-1-9. 20. Adjust the CTL Head Position 25. Perform the Electrical Adjustments Refer to Section 7-1-5. after Drum Replacement 21. Confirm the AT Head Height Refer to Section 6. Refer to Section 7-1-6. 5-17 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 202: Drum Assembly Replacement

    . A correct RF signal waveform cannot be obtained due to the worn upper or lower drum even if the tracking adjustment is performed. . The VTR performance deteriorates because of the noise or jitter caused by the bearing life. 5-18 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 203 (4) Remove the screw, shift the video head Height cleaner assembly in the direction indicated Harness determing by the arrow A, and remove it from the plate height determing plate. CN851 PD-35 board Sensor holder Remove the Rotary Head Cleaner Assembly 5-19 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 204 Brush slip ring assembly Board cover the same way as in steps (2) and (3). Flexible board Screw Screws hole (C3 x 8) SE-341 board Screw(C3 x 8) Drum assembly 5-20 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 205 Be careful not to touch the AT head and peripheral tape guides when removing the drum assembly. (7) Loosen the hexagonal screw, then remove the 22-pin demagnetization head assembly from the drum assembly. Hexagonal screw Demagnetization head assembly Remove the Drum Assembly 5-21 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 206 Fixing screw (Cleaning) After cleaning, wipe using a dry cleaning cloth. Positioning hole(Cleaning) Fixing screw(Cleaning) • Chassis Positioning pin(Cleaning) Screw hole(Cleaning) Screw hole(Cleaning) Positioning pin Screw hole(Cleaning) (Cleaning) Cleaning 5-22 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 207 Tightening torque : 39.2 x 10 N.m {4kgf . cm} harness holder as shown in the figure. • When connecting the Harnesses • How to fix the harness 14-pin 16-pin 22-pin Harness holders Attach the Drum Assembly 5-23 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 208 . Rotary heads (Refer to Section 5-2-3 in Mainte- nance Manual Part 1.) . Lower drum’s tape running surface (Refer to Section 5-2-4 in Maintenance Harness rail Manual Part 1.) After cleaning, wipe using a dry cleaning cloth. Demagnetization head assembly Attach the Drum Assembly 5-24 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 209 (7) Adjust the position of the cleaning roller. PD-35 board Cleaning roller Height determing CN851 (Refer to step 5 in Section 5-4.) plate Bundling band Harness Video head cleaner Full-erase Sensor holder assembly head Attach the Video Head Cleaner Assembly 5-25 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 210 Refer to Section 7-1-9. 18. Confirm the Audio Level in REV Mode Refer to Section 7-1-10. 19. Confirm the Tape Running Refer to Section 7-1-2. 20. Perform the Electrical Adjustment after Drum Replacement Refer to Section 6. 5-26 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 211: Cleaning Roller And Video Head Cleaner Assembly Replacement

    2. Remove the upper lid. (Refer to Section 2-3-1 in Maintenance Manual Part1.) 3. Remove the plate MD assembly. (Refer to Section 2-4 in Maintenance Manual Part1.) 4. Remove the cassette compartment. (Refer to Section 2-5 in Maintenance Manual Part1.) 5-27 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 212 If the cleaning roller is installed upside down, the positional relationship between the cleaning roller Narron (white) and video heads may be shifted. Be sure to keep Cleaning roller the installing direction. Wide (gray) CR spacer Replace the Cleaning Roller 5-28 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 213 A (counterclookwise). (4) Fill in the hours of the cleaning roller replacement on the hours label sticked on the Height video head cleaner assembly. determing plate Full-erase head Attach the Video Head Cleaner Assembly 5-29 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 214 (4) Repeat steps (1) through (3) above until the specifications 1 through 3 are satisfied. Spec.3: C = Clearance exists. • When the specifications 1or 2 are not satisfied. Portion B Portion A (Supporting point) Arm bracket assembly Adjust the Cleaning Roller Position 5-30 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 215 (or equivalent). Harness Video head cleaner Full-erase Sensor holder assembly head Connect the Harness Adjustment after Replacement 7. Confirm the Cleaning Solenoid Operation Refer to Section 4-2-2 in Maintenance Manual Part 1. (C023: CLEANING ROLLER) 5-31 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 216: At Head Cleaner Replacement

    2. Remove the upper lid. (Refer to Section 2-3-1 in Maintenance Manual Part 1.) 3. Remove the plate MD assembly. (Refer to Section 2-4 in Maintenance Manual Part 1.) 4. Remove the cassette compartment. (Refer to Section 2-5 in Maintenance Manual Part 1.) 5-32 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 217 CL arm assembly. (2) Fix the CL arm assembly by new stop washer. Remove the CL Arm Assembly Stop washer (2.3) : 3-669-596-00 5-33 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 218 AT shield case (2) Turn the power on and confirm that the CL arm assembly smoothly operates while repeating the threading and unthreading. AT head CL arm assembly M gear CL guide rail Confirm the CL Arm Assembly Operation 5-34 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 219: Air Filter Replacement

    (3) Push the air filter out using fingers from the filter housing. Two holes are on the both sides of the filter housing. Screw (B3 x 6) Filter guard Filter Screw Filter housing (B3 x 6) Remove the Air Filter 5-35 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 220 (3) Attach the filter guard with the two screws. (4) Turn the lower control panel back where it Screw was. (B3 x 6) Filter guard Screw Boss (Cleaning) Filter housing (B3 x 6) (Cleaning) Attach the air filter 5-36 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 221: Pinch Roller Replacement

    3. Remove the plate MD assembly. (Refer to Section 2-4 in Maintenance Manual Part 1.) 4. Remove the cassette compartment. (Refer to Section 2-5 in Maintenance Manual Part 1.) Tools . Thickness gauge: 9-911-053-00 . Cleaning cloth: 3-184-527-01 . Cleaning fluid: 9-919-573-01 5-37 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 222 (2) Fasten the pinch arm assembly by new stop washer. Stop washer (2.3) : 3-669-596-00 (3) Push the pinch arm assembly manually in the direction of the drum, then release. At that time, confirm that the pinch arm assembly smoothly returns to the former position. 5-38 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 223 Adjust the Pinch Arm Assembly Vertical Play Adjustment after Replacement 5. Confirm the Tape Running Refer to Section 7-1-2. 6. Confirm the AT Head Height Refer to Section 7-1-6. 7. Confirm the AT Head Azimuth Refer to Section 7-1-7. 5-39 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 224: Ctl Head Replacement

    4. Remove the cassette compartment. (Refer to Section 2-5 in Maintenance Manual Part 1.) Tools . Cleaning cloth: 3-184-527-01 . Cleaning fluid: 9-919-573-01 . Torque screwdriver (6 kgf.cm) (JB-5251): J-6252-510-A . Torque screwdriver’s bit (+2 mm, l = 75 mm): J-6323-420-A 5-40 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 225 CTL and the full-erase Never loosen or remove these head will be out of specification. screws (2) Unsolder the connector pins. Spring washers CTL head securing screws (P2 x 3) Remove the CTL Head 5-41 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 226 Spring washers CTL head securing screws (P2 x 3) CTL head Spec. : The side of the CTL head and the edge of the CTL/FE bracket are the same surface. Same surface CTL/FE bracket Mount the CTL Head 5-42 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 227 10. Adjust the CTL Head Position Refer to Section 7-1-5. 11. Confirm the Tape Running Refer to Section 7-1-2. 12. Confirm the Audio/TC Head Position Refer to Section 7-1-9. 13. Adjust the Drum Phase Refer to Section 6-2-1. 5-43 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 228: Reel Motor Assembly Replacement

    24. Perform the Reel Torque Adjust (Refer to Section 4-2-7 in Maintenance Manual Part 1.) (A006: S REEL TORQUE, A007: T REEL TORQUE) 25. Perform the Adjustmented Data Save (Refer to Section 4-2-7 in Maintenance Manual Part 1.) (A012: NV-RAM CONTROL) 5-44 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 229 . L-shaped wrench (1.5 mm): 7-700-736-05 . Torque screwdriver (12 kg.cm) (JB-5252): J-6252-520-A . Torque screwdriver’s bit (+ 3 mm, l = 90 mm): J-6323-430-A . Grease (SGL-601): 7-651-000-10 . Oil: 7-661-018-18 . Cleaning cloth: 3-184-527-01 . Cleaning fluid: 9-919-573-01 5-45 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 230 (2) Remove the E ring and remove the crank arm (B). (3) Remove the screw and remove the slide shaft holder. Crank arm (B) RS table block assembly Remove the Crank Arm and Slide Shaft Holder 5-46 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 231 . Be careful not to cause damage to the slide shaft during removal. Remove the RS Table Block Assembly 4. Disconnect the Harnesses Disconnect the harnesses from the two connectors CN926 and CN927 on the RM board. Connector (CN927) RM board Connector (CN926) Disconnect the Harnesses 5-47 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 232 Be careful not to loose the removed poly- slider washer. Spacers Poly-slider washer Reel motor assembly < T side > Screws (PSW3 x 10) Reel motor plate Spacers Poly-slider washer Reel motor assembly Remove the Reel Motor Assembly 5-48 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 233 CN926 and CN927 on the RM board. Connector (CN926) < T side > Screws (PSW3 x 10) Reel motor plate Cleaning (Bottom surface) Spacers Cleaning Connector (CN926) Hole Reel motor assembly Connector (CN927) RM board Attach the Reel Motor Assembly 5-49 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 234 (2) Confirm that the RS table block assembly is Attach the Crank Arm in the middle between S and L cassette positions. (3) Attach apply one the crank arm (B) to the shaft of the crank arm (A) with the E ring. 5-50 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 235 (C010: S REEL MOTOR, Part 1. C011: T REEL MOTOR) (A012: NV-RAM CONTROL) 22. Perform the Reel FG Duty Adjust Refer to Section 4-2-7 in Maintenance Manual Part 1. (A001: S REEL FG DUTY, A002: T REEL FG DUTY) 5-51 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 236: Reel Motor Shaft Slantness Adjustment

    Reel motor shaft slantness check tool If the specification is not satisfied, perform steps 6 through 10. Reel motor shaft Cassette reference plate (L) Spec.1: (L cassette position) A < 0.03 mm Check the Reel Motor Shaft Slantness (L) 5-52 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 237 If the specification is not satisfied, perform steps 6 and later. Reel motor shaft slantness check tool Reel motor shaft Cassette reference plate (L) Spec.2 : (S cassette position) A < 0.1 mm Check the Reel Motor Shaft Slantness (S) 5-53 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 238 Gradually tighten the three screws loosened in step 6. Reel motor Tightening torque: 68.6 x 10 N . m Ajustment the Reel Motor Shaft Slantness {7 kgf . cm} 10. Recheck the Reel Motor Shaft Slantness Refer to steps 2 through 5. 5-54 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 239: Cassette Pillar Height Adjustment

    (2) Check with a small dental mirror that there are no clearances between the S and T cassette pillars and the reference plate (L). If the specification is not satisfied, perform steps 4 through 6. 5-55 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 240 Check that the height of the S and T cassette pillars satisfy the specification. Shift the tightening position of the fixing screw Adjust the Cassette Pillar Height when performing readjustment with the specification not satisfied. (Do not tighten the screw in the same position as previous.) 5-56 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 241: Reel Table Height Adjustment

    Check the Reel Table Height (L) (3) Check the reel table height from the directions indicated by the arrow d in the same way. If the specification is not satisfied in steps 3 and 4, perform steps 7 and 8. 5-57 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 242 Reel table height check gauge Reel table Cassette reference plate (L) The * marked portion of the gauge slide over Spec.: the flange of the reel table. The ** marked portion of the gauge does not slide over. 5-58 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 243 RS table block assembly and tighten the two set screws. 11. Recheck the Reel Table Height Refer to steps 2 through 6. Notches Set screw Set screw Tighten the Screws of the Reel Table Assembly 5-59 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 244: Reel Brake Clearance Check

    Brake Lining Replacement : Section 5-22. Brake arm block Boss Spec.: A = Clearance exists. Brake arm block S-reel table Brake arm block Boss Spec.: A = Clearance exists. Brake arm block Check the Reel Brake Clearance 5-60 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 245: Reel Brake Release Amount Adjustment

    (Specification 1) If specification 1 is not satisfied, perform steps 3 and later. Brake lining Spec.1: The brake lining does not touch a reel table while reel table rotating. Check the Reel Brake Release Amount 5-61 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 246 10. Check the Cassette Pillar Height Refer to Section 5-9-3. Brake arm block 11. Check the Reel Table Height Spec.2 : A = 0.6 to 1.8 mm Refer to Section 5-9-4. (Solenoid energized position) Check the Reel Brake Release Amount 5-62 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 247: Reel Table Rotation Sensor Position Adjustment

    1. If the specification 1 is not satisfied, perform steps 4 and later. Spec.1 : A = 0.1 mm or more Check the Reel Table Rotation Sensor Clearance 5-63 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 248 CH-2 satify specifications 3 and 4. Spec. 2 : No distortion is in the waveform. (Distortion is in the waveform.) TP1 or TP2 Output Spec. 3 : A > 30 mVp-p Spec. 4 : > 0.8 Check the Reel FG Output Level 5-64 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 249 Be careful not to damage the reel flange and the reel table rotation sensor. (2) Rotate the reel table, and check that it rotates smoothly. (3) Recheck that the specifications 1 through 4 are satisfied referring to steps 1 through 3. 5-65 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 250: Capstan Motor Replacement

    (Refer to Section 2-3-1 in Maintenance Manual Part 1.) 6. Remove the plate HDD unit. (Refer to 5-31.) 7. Remove the DR-315 board. (Refer to 5-32-6.) Tools . Cleaning cloth : 3-184-527-01 . Cleaning fluid : 9-919-573-01 5-66 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 251 (1) Turn the knob of the demagnetization head assembly counterclockwise about seven turns Knob by finger. (2) Loosen the hexagonal screw, then remove the demagnetization head assembly from the Demagnetization drum assembly. head assembly Remove the Demagnetization Head Assembly 5-67 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 252 (2) Connect the harness disconnected in (1) of step 3 to the capstan motor board. 5. Attach the DR-315 Board Refer to Section 5-32-6. 6. Attach the HDD Unit Refer to Section 5-31. Harness Capstan motor Remove/Attach the Capstan Motor 5-68 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 253 Put portion “a” of the demagnetization head Knob assembly under the knob. (2) Turn the knob of the demagnetization head Demagnetization clockwise with fingers and tighten the knob head assembly as far as it will go. Attach the Demagnetization Head Assembly 5-69 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 254 Refer to Section 4-2-2 in Maintenance Manual Part 1. Part 1. (A023: NV-RAM CONTROL) (C014: CAPSTAN MOTOR) 13. Perform the Capstan FG Duty Adjust Refer to Section 4-2-7 in Maintenance Manual Part 1. (A003: CAPSTAN FG DUTY) 5-70 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 255: At Head Replacement

    4. Remove the cassette compartment. (Refer to Section 2-5 in Maintenance Manual Part 1.) Tools . Cleaning cloth: 3-184-527-01 . Cleaning fluid: 9-919-573-01 . Torque screwdriver (6 kg.cm) (JB-5251): J-6252-510-A . Torque screwdriver’s bit (+2 mm, l = 75 mm): J-6323-420-A 5-71 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 256 Remove the two screws, then remove the AT head assembly from the unit. Be careful not to touch the drum (especially video heads). Also, take care not to damage the peripheral tape guides. Remove the AT Head Assembly 5-72 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 257 < Front view > AT braket Spec.: = (Upper view) AT bracket is parallel to circuit board. = (Front view) AT bracket is parallel to AT head. AT head Remove/Mount the AT Head 5-73 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 258 Clean the AT head surface using a cleaning cloth moistened with cleaning fluid. (Refer to Section 5-2-5 in Maintenance Manual Screw (B3 x 8) Part 1.) After cleaning, wipe using a dry cleaning cloth. CL guide rail Attach the CL Guide Rail 5-74 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 259 16. Confirm the Audio Level in REV Mode Refer to Section 7-1-10. 17. Confirm the Video Tracking Refer to Section 7-1-3. 18. Confirm the Tape Running Refer to Section 7-1-2. 19. Perform the Electrical Adjustment after AT Head Replacement Refer to Section 6-4. 5-75 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 260: Pinch Solenoid Replacement

    2. Remove the upper lid. (Refer to Section 2-3-1 in Maintenance Manual Part 1.) 3. Remove the plate MD assembly. (Refer to Section 2-4 in Maintenance Manual Part 1.) 4. Remove the cassette compartment. (Refer to Section 2-5 in Maintenance Manual Part 1.) 5-76 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 261 Screw (PSW3 x 8) 2. Remove the Pinch Press Assembly Remove the two screws, then remove the pinch Harness press assembly from the unit. PD-35 board CN854 CN851 Pinch press assembly TC-96 board Remove the Pinch Press Assembly 5-77 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 262 PD-35 board Remove the PD-35 Board 4. Remove the Pinch Stopper Remove the two screws and washers, then Screw (PS3 x 5) remove the pinch stopper. Screw (PS3 x 5) Washer Washer Pinch stopper Remove the Pinch Stopper 5-78 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 263 (1) Extract the pinch joint shaft. (2) Remove the two screws and washers, then Pinch joint shaft Pinch solenoid remove the pinch solenoid. Washer Washer Screw (PS3 x 5) Screw (PS3 x 5) Remove the Pinch Solenoid 5-79 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 264 (5) Confirm that the other end of the spring is put on the notch of the pinch press lever. Pinch press lever Notch Pinch limiter Washer Screw (PS3 x 5) Washer Screw (PS3 x 5) Attach the Pinch Solenoid 5-80 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 265 (2) Put the washers and tighten the screws. Pinch stopper Tightening torque: 98 x 10 N . m Round hole {10.0 kgf . cm} Longitudinal hole Shaft Pinch press lever Pinch joint shaft Attach the Pinch Stopper 5-81 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 266 (2) Insert the PD-35 board into the pinch stopper Screw (PSW3 x 6) and tighten the screw. Gray Brown Orange Pinch stopper PD-35 board . Harness wiring Print on board Harness Brown Orange Gray Attach the PD-35 Board 5-82 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 267 Pinch press assembly Attach the Pinch Press Assembly Adjustment after Replacement 11. Confirm the Pinch Solenoid Operation Refer to Section 4-2-2 in Maintenance Manual Part 1. (C020: PINCH ROLLER) 12. Adjust the Pinch Press Clearance Refer to Section 5-12-2. 5-83 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 268: Pinch Press Clearance Adjustment

    If the specification is not satisfied, perform steps 3 and later. Pinch roller Pinch limitter Iron core Pinch press lever Spec. : A = 0.6 to 0.8 mm Pinch Press Clearance Check 5-84 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 269 Tighten the two screws loosened in step 3. Pinch limitter Tightening torque: 98 x 10 N . m {10.0 kgf . cm} Adjust the Pinch Press Clearance 6. Recheck the Pinch Press Clearance Refer to steps 1 and 2. 5-85 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 270: Fan Motor Replacement

    . When the fan motor stops because of trouble, some components inside the unit may be heated to high temperatures. Take care not to burn your hands by touching these components. In service operation, turn off the power and perform the service operation after the temperatures turns to ordinary state. 5-86 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 271: Fan Motor (Rear) Replacement

    Remove the six screws and remove the connector panel. Connector panel It is not neccessary to disconnect the harnesses Screw (BVTT3 x 6) connected to the connector panel. Screws (BVTT3 x 6) Screws (BVTT3 x 6) Remove the Connector Panel 5-87 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 272 (1) Disconnect the harness of the fan motor (rear) from the connector shown in the figure. (2) Remove the two screws and remove the fan motor (rear). Fan motor (rear) Connector Screws (BVTT3 x 30) Remove the Fan Motor (Rear) 5-88 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 273 (3) Connect the harness of the fan motor (rear) to the connector. Notch of 4. Attach the Connector Panel insulation Attach the connector panel with the six screws. sheet Ornamental plate Fan motor (rear) Connector Screws (BVTT3 x 30) Attach the Fan Motor (Rear) 5-89 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 274: Fan Motor (Ps) Replacement

    (3) Stick a filament tape to fix the harness of the Filament tape fan motor (PS). Connector 4. Attach the Power Supply Panel Remove/Attach the Fan Motor (PS) Install the power supply panel assembly with the three screws. 5-90 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 275: Fan Motor (Hdd) And Fan Motor (Md) Replacement

    2. Remove the Hard Disk Drive Unit Remove the hard disk drive unit. (Refer to Section 5-31-2.) Screws (B4 x 6) Screws (B4 x 6) Bottom plate Screws (B4 x 6) Remove the Bottom Plate 5-91 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 276 The hook is hard to be seen since it is the inner part. (4) Pull out the DR-315 board as far as possible with connectors are connected state. Harness Harness clamper Screw (PWH3 x 8) Screw DR-315 board (PWH3 x 8) Remove the DR-315 Board 5-92 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 277 Take care to use the correct type since the Fan motor bracket Ornamental plate sharpes of the fan motor (HDD) and the fan (Type:109P0612H7D01) Screws motor (MD) are the same. (B3 x 20) Replace the Fan Motor (HDD) 5-93 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 278 The type of this fan motor (MD) is “109P0612M7D01”. Take care to use the correct type since the Harness sharpes of the fan motor (MD) and the fan motor (HDD) are the same. Ornamental plate (Type:109P0612H7D01) Replace the Fan Motor (MD) 5-94 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 279 (2) Attach the fan motor (MD) with the screw. (3) Connect the harness of the fan motor (MD) to the connector (CN161). Notch of chassis Hook Screw Connector (B3 x 6) Fan motor (MD) Harness Attach the Fan Motor (MD) 5-95 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 280 Attach the hard disk drive unit. DR-315 (Refer to Section 5-31-2.) board 10. Attach the Bottom Plate Attach the bottom plate with the six screws. Screw (PWH3 x 8) Screw (PWH3 x 8) Harness clamper Attach the DR-315 Board 5-96 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 281: Brush Slip Ring Assembly Replacement

    4. Remove the cassette compartment assembly. (Refer to Section 2-5 in Maintenance Manual Part 1.) Tools . Torque screwdriver (6 kg . cm)(JB-5251): J-6252-510-A . Torque screwdriver’s bit (+2 mm, l = 75 mm): J-6323-420-A . Cleaning cloth: 3-184-527-01 . Cleaning fluid: 9-919-573-01 5-97 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 282 DR-294 board with dry cloth. Contact portions Mounting surface (wipe the dry cloth) Never apply cleaning fluid to the contact portions. (wipe the dry cloth) Cleaning 5-98 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 283 Tightening torque 14.7 x 10 N . m {1.5 kgf . cm} Attach the Brush Slip Ring Assembly Adjustment after Replacement 6. Check the RF Refer to Section 4-2-3 in Maintenance Manual Part 1. (C1: RF CHECK) 5-99 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 284: Brake Solenoid Replacement

    22. Reel Brake Clearance Confirmation (Refer to Section 5-9-5.) 23. Reel Brake Release Confirmation (Refer to Section 5-9-6.) 24. Brake Solenoid Operation Confirmation (Refer to Section 4-2-2 in Mainte- nance Manual Part 1.) (C021: S REEL BRAKE, C022: T REEL BRAKE) 5-100 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 285 . L wrench (d = 1.5 mm): 7-700-736-05 . Torque screwdriver (12 kg . cm)(JB-5252): J-6252-520-A . Torque screwdriver’s bit (+3 mm, l = 90 mm): J-6323-430-A . Grease (SGL-601): 7-651-000-10 . Oil: 7-661-018-18 . Cleaning cloth: 3-184-527-01 . Cleaning fluid: 9-919-573-01 5-101 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 286 S or L cassette position. (2) Remove the E ring, then remove the crank arm (B). (3) Remove the screw, then remove the slide shaft support. Crank arm (B) RS table block assembly Crank Arm and Slide Shaft Support Removal 5-102 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 287 . Be careful not to damage the slide shaft. RS Table Block Assembly Removal 4. Harnesses Disconnection Disconnect the harnesses from the connectors CN926 and CN927 on the RM board. CN927 RM board CN926 Harnesses Disconnection 5-103 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 288 . Do not remove the polywasher that is passed through the reel motor shaft. Spacers Polywasher Reel motor assembly < T side > Screws (PSW3 x 10) Reel motor plate Spacers Polywasher RM board Reel motor assembly Reel Motor Assembly Removal 5-104 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 289 (2) Remove the E ring, then remove the brake Reel motor plate assembly. Brake Assembly Removal 7. Brake Solenoid Removal Remove the two screws, then remove the brake solenoid. Reel motor plate Screws (PSW3 x 6) Brake solenoid Brake Solenoid Removal 5-105 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 290 (1) Pass the brake assembly through the shaft of Spring Brake assembly the reel motor plate. Reel motor plate (2) Put the spring on the reel motor plate. (3) Fix the brake assembly using an E ring. E ring (2.3): 7-624-105-04 Brake Assembly Installation 5-106 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 291 RM board. CN927 Reel motor assembly RM board CN926 < T side > Screws (PSW3 x 10) Reel motor plate Cleaning (bottom surface) Spacers Cleaning Reel motor assembly CN926 CN927 RM board Reel Motor Assembly Installation 5-107 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 292 Attach the crank arm in the middle between S and L cassette positions for the adjustment of gear phase. (3) Attach the crank arm (B) in the shaft of the crank arm (A) with the E ring. 5-108 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 293 22. Reel Brake Clearance Confirmation Refer to Section 5-9-5. 23. Reel Brake Release Confirmation Refer to Section 5-9-6. 24. Brake Solenoid Operation Confirmation Refer to Section 4-2-2 in Maintenance Manual Part 1. (C021: S REEL BRAKE, C022: T REEL BRAKE) 5-109 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 294: S Tention Regulator Assembry Replacement

    3. Remove the plate MD assembly. (Refer to Section 2-4 in Maintenance Manual Part 1.) 4. Remove the cassette compartment assembly. (Refer to Section 2-5 in Mainte- nance Manual Part 1.) Tools . Cleaning cloth: 3-184-527-01 . Cleaning fluid: 9-919-573-01 5-110 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 295 Mounting surface of the Cleaning cassette compartment S Tension Regulator Assembly Removal/Installation Adjustment after Replacement 4. Tape Running Adjustment Refer to Section 7-1-2. 5. Tension Offset Adjustment Refer to Section 4-2-7 in Maintenance Manual Part 1. (A008: S/T TENSION OFFSET) 5-111 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 296: T Tention Arm Replacement

    4. Remove the plate MD assembly. (Refer to Section 2-4 in Maintenance Manual Part 1.) 5. Remove the cassette compartment assembly. (Refer to Section 2-5 in Mainte- nance Manual Part 1.) Tools . Locking compound: 7-432-114-11 . Cleaning fluid: 9-919-573-01 . Cleaning cloth: 3-184-527-01 5-112 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 297 T tension arm and return it to the shaft. Polywasher (2) Remove the two bearings and two springs from the T tension arm. The two springs are the same. T Tension Arm Removal 5-113 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 298 (4) Pass the T tension arm through the shaft Bearings while putting DME on the TR-79 board in the T tension arm. (5) Fix the T tension arm using a new stop washer. Shaft (cleaning) TR-79 board T Tension Arm Installation 5-114 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 299 T tension base threading ring and operates normally. 1 Spring 2 Spring Roller Tension Spring Installation Adjustment after Replacement 8. Tension Offset Adjustment Refer to Section 4-2-7 in Maintenance Manual Part 1. (A008: S/T TENSION OFFSET) 5-115 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 300: T Drawer Arm Replacement

    4. Remove the plate MD assembly. (Refer to Section 2-4 in Maintenance Manual Part 1.) 5. Remove the cassette compartment assembly. (Refer to Section 2-5 in Mainte- nance Manual Part 1.) Tools . Locking compound: 7-432-114-11 . Cleaning fluid: 9-919-573-01 . Cleaning cloth: 3-184-527-01 . Calipers (or the equivalent) 5-116 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 301 (1) Remove the stop washer and polywasher, then remove the T drawer arm from the T drawer base. (2) Remove the spring and polywasher. T drawer arm Polywasher Spring T drawer base Polywasher Stop washer T Drawer Arm Removal 5-117 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 302 T drawer base. 3 Confirm that specification 1 is satisfied. Polywasher (vertical play adjustment) T drawer base (4) Pass the polywasher through the shaft and fix Stop washer the T drawer arm using a new stop washer. 5-118 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 303 Part No. 0.13 mm 3-701-439-01 3.0 mm 0.25 mm 3-701-439-11 0.5 mm 3-701-439-21 < Side view > Arm stopper T drawer arm T drawer assembly Spec.3 : 0.2 mm (Between arm stopper and arm) T Drawer Arm Installation 5-119 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 304 (3) Connect the harness to the connector of the (PWH3 x 8) tape top sensor. (4) Fix the harness to the holder of the adjustment plate. Cleaning Cleaning SE-341 board Harness Cleaning Harness T Drawer Assembly Installation 5-120 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 305: Slant Guide Slantness Adjustment

    Spec. 5 : At the unthreading state, the lower surface of the roller does not touch with the surface B of the threading ring. T Drawer Assembly Operation Confirmation Adjustment after Replacement 12. Slant Guide Slantness Adjustment Refer to Section 5-18-2. 5-121 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 306 . Cassette reference plate (L)(MW-088): J-6320-880-A . Tension regulator slantness check tool (BW-080): J-6190-800-A . Thickness gauge: 9-911-053-00 . Cleaning cloth: 3-184-527-01 . Cleaning fluid: 9-919-573-01 . Locking compound: 7-432-114-11 . Metal cassette tape for Betacam SP (L cassette) 5-122 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 307 (L). 0.15 mm 0.25 mm 4. Cleaning < Direction of B > Clean the slant guide using a cleaning cloth moistened with cleaning fluid. Spec. 2: 0.15 mm 0.25 mm Slant Guide Slantness Confirmation 5-123 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 308 If specification 3 is not satisfied, perform the adjustments in steps 7 and later. L cassette tape Upper flange Tape Lower flange TG-10 Spec. 3: Tape runs that it does not contact with the upper and lower flanges. Tape Running Confirmation at TG-10 Guide 5-124 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 309 TG-10 guide with specification 3 is satisfied state. If specification 3 is not satisfied, repeat steps 7 through 10. 11. Apply Locking Compound Apply the locking compound to the fixing screw of the adjustment plate. 5-125 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 310: Gear Box Assembly And Threading Motor Replacement

    3. Remove the plate MD assembly. (Refer to Section 2-4 in Maintenance Manual Part 1.) 4. Remove the cassette compartment assemby. (Refer to Section 2-5 in Mainte- nance Manual Part 1.) Tools . L wrench (Across flat has 1.27 mm): 7-700-736-01 . Locking compound: 7-432-114-11 . Thickness gauge: 9-911-053-00 5-126 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 311 The hook is hard to be seen since it is the inner part. (4) Pull out the DR-315 board as far as possible with connectors are connected state. Harness Harness clamper Screw (PWH3 x 8) Screw DR-315 board (PWH3 x 8) Remove the DR-315 Board 5-127 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 312 (4) Disconnect the two harnesses from the gear box assembly. The steps 6 through 9 are not required when the gear box assembly is replaced. Harnesses Bundling band (A) Screw (PWH3 x 8) Gear Box Assembly Removal 5-128 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 313 Pass the pins of the threading motor through the Terminal with negative polarity CCM-15 board and solder them. CCM-15 board Solder so that no clearance exists between the motor and CCM-15 board. Threading motor _ marking Terminal with + marking positive polarity CCM-15 Board Mounting 5-129 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 314 (8) Confirm that the M gear smoothly rotates Spec. : 0.8 mm < A < 1.2 mm when manually rotating the M gear. More- over, confirm that the M gear does not touch the photointerrupter. Threading Motor Installation 5-130 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 315 (9) Bundle the harness using a new bundling band (B) (or the equivalent). Bundling band Hole Screw (PWH3 x 8) Gear Box Assembly Installation 5-131 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 316 Install the bottom plate with the six screws. Adjustment after Replacement 15. Threading Motor Operation Screw Confirmation (PWH3 x 8) Refer to Section 4-2-2 in Maintenance Manual Screw Part 1. (PWH3 x 8) Harness clamper (C012: THREADING MOTOR) Install the DR-315 Board 5-132 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 317: Threading Ring And Ring Roller Replacement

    3. Remove the plate MD assembly. (Refer to Section 2-4 in Maintenance Manual Part 1.) 4. Remove the cassette compartment assembly. (Refer to Section 2-5 in Mainte- nance Manual Part 1.) Tools . Cleaning cloth: 3-184-527-01 . Cleaning fluid: 9-919-573-01 5-133 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 318 Disconnect the harness from the connector on the SE-341 board AT head assembly. Flexible Board Removal/Harness Disconnection 3. Pinch Arm Guard Removal Remove the screw, then remove the pinch arm Screw (PWH3 x 8) guard. Pinch arm guard Pinch Arm Guard Removal 5-134 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 319 Screw (PSW3 x 8) Harness connectors CN851 and CN854 on the PD-35 Screw (PSW3 x 8) board. (2) Remove the two screws, then remove the pinch pressure assembly. Harness PD-35 board CN854 CN851 Pinch pressure assembly Pinch Pressure Assembly Removal 5-135 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 320 Tape end sensor (4) Remove the screw, then remove the S plate CN200 assembly. TC-96 board The tape cleaner has a sharp edge. Pay careful attention when handling the tape cleaner. Full-erase head CTL head S Plate Assembly Removal 5-136 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 321 S Tension Regulator Assembly Removal 8. Disconnect the Harness Remove the harness of demagnetization head Plate MR assembly from the harness rail, then disconnect Connector the connector as shown in the figure. Harness Harness rail Demagnetization head assembly Disconnect the Harness 5-137 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 322 (2) Remove the two screws, then remove the T Screws drawer assembly. (PWH3 x 8) SE-341 board T Drawer Assembly Removal 10. Gear Box Assembly Removal Refer to steps 1 through 5 in Section 5-19. 5-138 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 323 Remove the threading ring assembly from the Full-erase head chassis. CTL head Roller Threading ring assembly Be careful not to damage the drum (especially, Ring Roller Removal/Installation video heads or upper drum’s tape running surface) and capstan motor shaft at that time. 5-139 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 324 (A) and (C). (2) Confirm that the threading ring assembly is put between the three ring rollers. Moreover, confirm that the T tension regulator roller is not dislocated from the side of the threading ring. 5-140 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 325 (5) Clamp each harness (CTL head, cleaning roller and tape end sensor) to the groove of the sensor holder. TC-96 board (6) Fix the harnesses with a new bundling band (or the equivalent). Full erase head CTL head S Plate Assembly Installation 5-141 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 326 CN851 and CN854 on the PD-35 board. Harness PD-35 board CN854 CN851 Pinch pressure assembly Notch TC-96 board . Installing position of the pinch pressure assembly Notch In the center Pinch pressure assembly Pinch Pressure Assembly Installation 5-142 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 327 (5) Confirm that the harness does not protrude into the mounting surface ( portion in the Screw (PWH3 x 8) figure) of the cassette compartment. Harness clamper Cleaning Mounting surface of cassette compartment Cleaning S Tension Regulator Assembly Installation 5-143 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 328 (3) Connect the harness to the connector of the (PWH3 x 8) tape top sensor. (4) Fix the harness to the holder of the adjustment plate. Cleaning Cleaning SE-341 board Harness Cleaning Harness T Drawer Assembly Installation 5-144 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 329 (Refer to step 9 in Section 5-18-1.) Threading ring Spec. 2 : At the unthreading state, the lower surface of the roller does not touch with the surface B of the threading ring. T Drawer Assembly Operation Confirmation 5-145 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 330 AT shield case when the cleaning roller cleans the AT head. a = Clearance exists AT shield case AT head CL arm assembly M gear CL guide rail CL Arm Assembly Operation Confirmation 5-146 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 331 Connect the flexible board to connector CN2 on AT head assembly the SE-341 board, then lock. Harness 29. Harness Connection Connect the harness to the connector of the AT Flexible board head assembly SE-341 board Flexible Board Mounting/Harness Connection 5-147 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 332 Harness Harness rail Demagnetization head assembly Connect the Harness Adjustment after Replacement 31. Pinch Pressure Clearance Adjustment Refer to Section 5-12-2. 32. Tape Running Confirmation Refer to Section 7-1-2. 5-148 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 333: Reel Table Assembly Replacement

    3. Remove the plate MD assembly. (Refer to Section 2-4 in Maintenance Manual Part 1.) 4. Remove the cassette compartment assembly. (Refer to Section 2-5 in Mainte- nance Manual Part 1.) Tools . L wrench (Across flat has 1.5 mm): 7-700-736-05 . Cleaning cloth: 3-184-527-01 . Cleaning fluid: 9-919-573-01 5-149 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 334 S reel brake T reel brake Tighten two set screws of the reel table assembly after the reel table height confirma- tion is complated. S reel motor shaft T reel motor shaft Reel Table Assembly Installation 5-150 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 335 Refer to Section 5-9-6. 6. Reel Rotation Sensor Position Confirmation Refer to Section 5-9-7. 7. Reel FG Duty Adjustment Refer to Section 4-2-7 in Maintenance Manual Part 1. (A001: S REEL FG DUTY, A002: T REEL FG DUTY) 5-151 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 336: Brake Lining Replacement

    3. Remove the plate MD assembly. (Refer to Section 2-4 in Maintenance Manual Part 1.) 4. Remove the cassette compartment assembly. (Refer to Section 2-5 in Mainte- nance Manual Part 1.) Tools . L wrench (Across flat has 1.5 mm): 7-700-736-05 . Cleaning cloth: 3-184-527-01 . Cleaning fluid: 9-919-573-01 5-152 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 337 In this Set screw Set screw case, remove the polywasher from the reel table assembly and return it to the reel motor shaft. The polywasher is used for reel table Reel Table Assembly Removal height adjustment. 5-153 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 338 S reel brake T reel brake Tighten two set screws of the reel table assembly after the reel table height confirma- tion is complated. S reel motor shaft T reel motor shaft Reel Table Assembly Installation 5-154 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 339 5-22. Brake Lining Replacement Adjustment after Replacement 7. Reel Table Height Confirmation Refer to Section 5-9-4. 8. Reel Brake Clearance Confirmation Refer to Section 5-9-5. 9. Reel Brake Release Confirmation Refer to Section 5-9-6. 5-155 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 340: Tape Guide Replacement

    Replacement Perform the part replacement while referring to the exploded view. TG-3 (exit guide) TG-7 TG-8 (T tension regulator) TG-9 TG-4 TG-6 Drum Slant guide TG-5 (threading roller) TG-1 (S tension regulator) TG-10 TG-0 TG-2 (entrance guide) 5-156 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 341 3 Video tracking confirmation (Refer to Section 7-1-3.) . Perform the following adjustments when the TG-2 or TG-3 tape guide is replaced. 1 RF switching position adjustment (Refer to Section 4-2-7 in Maintenance Manual Part 1.) (A011: RF SWITCHING POS.) 5-157 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 342: Tape Cleaner Replacement

    2. Remove the upper lid. (Refer to Section 2-3-1 in Maintenance Manual Part 1.) 3. Remove the plate MD assembly. (Refer to Section 2-4 in Maintenance Manual Part 1.) 4. Remove the cassette compartment assembly. (Refer to Section 2-5 in Maintenance Manual Part 1.) 5-158 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 343 S plate assembly. Tape cleaner Installation S plate assembly 2. Tape Cleaner Installation Tighten the screw while moving a new tape cleaner clockwise. Tightening torque: 19.6 x 10 N . m {20 kgf . cm} Tape Cleaner Removal/Installation 5-159 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 344: Full-Erase Head Replacement

    4. Remove the cassette compartment assembly. (Refer to Section 2-5 in Maintenance Manual Part 1.) Tools . Cleaning cloth: 3-184-527-01 . Cleaning fluid: 9-919-573-01 . Torque screwdriver (6 kg . cm)(JB-5251): J-6252-510-A . Torque screwdriver’s bit (+2 mm, l = 75 mm): J-6323-430-A 5-160 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 345 CTL/FE mounting table. This causes the deviation in the zenith of the CTL head and full-erase head. CTL/FE mounting table CTL head (2) Unsolder the connector pins. Washer Screw (PS2 x 4) Full-erase Head Removal 5-161 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 346 Tightening torque: 19.6 x 10 N . m Washer {2.0 kgf . cm} Screw (PS2 x 4) <Top view> Longitudinal hole (CTL/FE mounting board) CTL head Full-erase head Spec.: The longitudinal hole can not see. Full-erase Head Installation 5-162 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 347 CTL/EE head assembly. 7. Cleaning Clean each surface of the CTL head and full-erase Boss head using a cleaning cloth moistened with Boss cleaning fluid. (Refer to Section 5-2-5 in Maintenance Manual CTL/FE Head Assembly Installation Part 1.) 5-163 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 348 Refer to Section 7-1-5. 11. Tape Running Confirmation Refer to Section 7-1-2. 12. AT Head Position Confirmation Refer to Section 7-1-9. 13. Drum Phase Adjustment Refer to Section 6-2-1. 14. Full-erase Current Confirmation Refer to Section 3-11-4. 5-164 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 349: Cleaning Solenoid Replacement

    4. Remove the cassette compartment assembly. (Refer to Section 2-5 in Maintenance Manual Part 1.) Tools . Torque screwdriver (6 kg . cm)(JB-5251): J-6252-510-A . Torque screwdriver’s hexagonal bit (Across flat has 1.5 mm, l = 50 mm): J-6323-440-A . Locking compound: 7-432-114-11 5-165 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 350 (1) Remove the screw. plate (2) Remove the video head cleaner assembly CN851 from the height determing plate while PD-35 board rotating it in the direction indicated by arrow Sensor holder Full-erase head Video Head Cleaner Assembly Removal 5-166 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 351 {2.0 kgf . cm} (5) Slightly apply locking compound to the screws. (6) Put the harness in the harness clamper. Cleaner lever Step 4-(4) Cleaner base Solenoid Harness clamper Screws (PS2 x 4) Cleaner lever 1 mm Cleaning Solenoid Removal/Installation 5-167 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 352 Height determing determing plate. plate (3) Tighten the screw while pushing the video head cleaner assembly in the direction indicated by arrow A. Sensor holder Video Head Cleaner Assembly Installation 5-168 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 353 (Specification 3) Iron core Video head cleaner sub-assembly Spec. 3: C = Clearance exists . Specifications are not satisfied. Portion A (Supporting point) Portion B Video head cleaner sub-assembly Cleaning Roller Position Adjustment 5-169 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 354 (or the equivalent). Harness Video head cleaner Full-erase Sensor holder assembly head Harness Connection Adjustment after Replacement 8. Cleaning Solenoid Operation Confirmation Refer to Section 4-2-2 in Maintenance Manual Part 1. (C023: CLEANING ROLLER) 5-170 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 355: Reel Shift Gear Replacement

    3. Remove the plate MD assembly. (Refer to Section 2-4 in Maintenance Manual Part 1.) 4. Remove the cassette compartment assembly. (Refer to Section 2-5 in Maintenance Manual Part 1.) Tools . Oil: 7-661-018-18 . Grease (SGL-601): 7-651-000-10 . Cleaning fluid: 9-919-573-01 . Cleaning cloth: 3-184-527-01 5-171 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 356 (3) Combine the crank arm with the crank gear. (4) Pass the crank gear through the shaft A. (5) Fix the crank gear with a new stop washer. Shaft A (after cleaning, apply a drop of oil.) Crank Gear Removal/Installation 5-172 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 357 Center line Reel shift gear Warm gear Warm wheel Spec. : The mark of the reel shift gear and the mark of the warm wheel are in the portion shown in the figure. Reel Shift Gear Installation 5-173 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 358 Warm gear (grease applying) (1) Wipe the grease on the warm gear and clean (2) Apply grease to the warm gear. 7. RS Table Block Assembly Installation Refer to steps 9 through 13 in Section 5-9-1. Grease Applying 5-174 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 359 Shaft < Fig. B > Crank arm Crank arm Reel motor plates Reference line Reference line Shaft Drive gear Shaft Reel Shift Gear Operation Confirmation Adjustment after Replacement 9. Cassette Pillar Height Adjustment Refer to Section 5-9-3. 5-175 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 360: Reel Shift Motor Replacement

    . Torque screwdriver’s hexagonal bit (Across flat has 0.89 mm, l = 50 mm): J-6323-440-A . Thickness gauge: 9-911-053-00 . Grease (SGL-601): 7-651-000-10 . Oil: 7-661-018-18 . Locking compound : 7-432-114-11 . Cleaning fluid: 9-919-573-01 . Cleaning cloth: 3-184-527-01 5-176 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 361 3. M Gear Removal < Bottom view > (1) Loosen the two set screws shown in the Reel shift motor figure. (2) Pull out the M gear from the shaft. Set screw Set screw M gear M Gear Removal 5-177 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 362 6. CCM-15 Board Mounting Pass the terminals of a new motor through the CCM-15 board, then solder. _ marking Terminal with + marking positive polarity Solder so that no clearance exists between the motor and CM-15 board. CCM-15 Board Removal/Mounting 5-178 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 363 M gear gear and reel shift base satisfies the Reel shift base specification when the M gear is pushed M gear toward the reel shift base. Spec. : A = 0.6 mm to 0.9 mm M Gear Installation 5-179 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 364 Refer to steps 9 through 13 in Section 5-9-1. Grease Applying Adjustment after Replacement 12. Cassette Pillar Height Confirmation Refer to Section 5-9-3. 13. Reel Shift Motor Operation Check Refer to Section 4-2-2 in Maintenance Manual Part 1. (C016: REEL SHIFT MOTOR) 5-180 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 365: Cassette Compartment Motor Replacement

    4. Remove the cassette compartment assembly. (Refer to Section 2-5 in Mainte- nance Manual Part 1.) Tools . L wrench (Across flat has 0.89 mm): 7-700-736-06 . Grease (SGL-601): 7-651-000-10 . Cleaning cloth: 3-184-527-01 . Cleaning fluid: 9-919-573-01 . Calipers (or the equivalent) 5-181 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 366 Set screw remove the motor joint. 5. Spacer Removal and Harness Motor joint Disconnection (1) Remove the spacer. (2) Unsolder and disconnect the harness from the Spacer Harness motor. Cassette compartment motor Cassette Compartment Motor Removal (2) 5-182 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 367 Tightening torque: 60 x 10 N . m {6 kgf . cm} Press Motor joint Cassette compartment motor Spec. : 3.8 mm < A < 4.2 mm Motor Joint Installation 5-183 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 368 Warm (gease smearing) Cassette Compartment Motor Installation Adjustment after Replacement 12. Cassette Compartment Motor Operation Check Refer to Section 4-2-2 in Maintenance Manual Part 1. (C013: CASSETTE COMP.) Perform this check with the cassette compartment installed in the unit. 5-184 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 369: Power Supply Block Replacement

    (1) Place the unit on its right side panel down. (2) Remove the six screws and remove the bottom plate. Screws (B4 x 6) Screws (B4 x 6) Bottom plate Screws (B4 x 6) Remove the Bottom Plate 5-185 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 370 Remove the three screws and open the power supply panel assembly. It is not necessary to disconnect the harness connected to the power supply panel assembly. Screw (PS3 x 6) Power supply panel assembly Screws (PS3 x 6) Power Supply Panel Assembly Removal 5-186 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 371 6. Power Supply Panel Assembly Installation Install the power supply panel assembly with the three screws. Be careful not to catch the harness. Screw (PS3 x 6) Power supply panel assembly Screws (PS3 x 6) Power Supply Panel Assembly Installation 5-187 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 372 (2) Put the unit back. 9. Operation Confirmation Turn the power on and confirm the unit runs in normal condition. Screws (B4 x 6) Screws (B4 x 6) Bottom plate Screws (B4 x 6) Bottom Plate Installation 5-188 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 373: Hard Disk Drive Replacement

    Moreover, pack the failed hard disk drive using specified packing materials when a failure occurs in the hard disk drive, then contact Sony’s sales organization. . HDD cushion It is recommended to use the HDD cushion (newly adopted tool) for protecting the hard disk drive on operating.
  • Page 374 (1) Place the unit on its right side panel down. (2) Remove the six screws and the bottom plate. Screws (B4 x 6) Screws (B4 x 6) Bottom plate Screws (B4 x 6) Remove the Bottom Plate 5-190 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 375 HDD cushion. 3. Replace the Hard Disk Drive Screws (B3 x 6) Refer to Section 5-31-3. Screws (B3 x 6) Screws (B3 x 6) Hard disk drive unit Screws (B3 x 6) Remove the Hard Disk Drive Unit 5-191 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 376 5. Attach the Bottom Plate (1) Attach the bottom plate with the six screws. (2) Gently put the unit back. Screw (B3 x 6) Screw (B3 x 6) HDD sub lid Install the Hard Disk Drive Unit 5-192 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 377: Hard Disk Drive Replacement

    Never use a ratchet-type traditional toque screwdriver. Preparation 1. Turn the power off and then wait over 30 seconds. Tools . Toque screwdriver’s bit (+3 mm, l=50 mm): J-6323-430-A . HDD cushion: J-6530-060-A . Shockless toque screwdriver (12 kg.cm): J-6530-070-A 5-193 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 378 (2) Insert a screwdriver to the eight holes shown in the figure and remove the screws. (3) Take off the HDD retainer assembly. Then the two hard disk drives are placed on the HDD cushion. Hard disk drives Remove the Hard Disk Drives 5-194 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 379 SCSI’s ID 6 mm number (0 or 1) as shown in the figure. SCSI ID=1 SCSI ID=0 SCSI ID=1 Without shorting plug Shorting plug Short the shorting pin No.1 to the No.2 Set the SCSI’s ID 5-195 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 380 Hard disk drives Tightening torque: 98 x 10 N . m {10.0 kgf . cm} Attach the Hard Disk Drive (4) Turn the hard disk drive unit downside up on the HDD cushion. 5-196 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 381 8. Attach the Hard Disk Drive Unit Refer to the steps 4 and 5 in Section 5-31-2. Hard disk cover Hard disk drive unit Shorting plug Short the shorting pin No.11 to the No.12 Attach the Hard Disk Drive Unit 5-197 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 382: Board

    506 is installed) Perform the “Check After Installing” refering Section 1-16-2 in Maintenance Manual Part 1. 8. (In case that the BKNW-104 is installed) Perform the “Adjustment After Installing” refering Section 1-18-2 in Maintenance Manual Part 1. 5-198 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 383 5. Disconnect the harness from the connector CN402 on the MB-648 board. 6. When the BKNW-103 (CP-300 board) is installed: Disconnect the flat cable from the connector CN403 on the CP-300 board. CN402 MB-648 board CP-300 board CN403 Connector panel assembly 5-199 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 384 In this way the four blank panels will remove. Be carefull not to lose them. CP-278 board CN191 CN192 CN193 9. Install the CP-278 board in the reverse order of steps 2 through 8. Blank panels Adjustment after replacement is not required. 5-200 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 385: Board

    (BVTT3 x 6) CP2 retainer of steps 2 through 8. (for DNW-A45/A45P, A50/A50P) Screws (BVTT3 x 6) When reinstalling the BKNW-103, refer to CP2 retainer (for DNW-A100/A100P) Section 1-17 in Maintenance Manual Part 1. 10. Perform the operation confirmation. 5-201 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 386: Board (Bknw-103)

    CP-300 board 9. Remove the screw A as shown in the figure, then remove the CP-300 board. BNC connector B Screws (BVTT3 x 6) 10. Install the CP-300 board refer to Section 1-17 in Maintenance Manual Part 1. 5-202 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 387: Board

    5. Remove the CP insulator (B). CP-301 board CN194 6. Install the CP-301 board in the reverse order Screws (BVTT3 x 6) or steps 2 through 5. Screws (BVTT3 x 6) Adjustment after replacement is not required. 5-203 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 388 The hook is hard to be seen since it is the inner part. 8. Pull out the DR-315 board as far as possible as shown in the figure. Harness Harness clamper Screw (PWH3 x 8) Screw (PWH3 x 8) DR-315 board 5-204 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 389 DR-315 board. CN111 CN103 10. Install the DR-315 board in the reverse order CN102 of steps 2 through 9. Adjustment after Replacement 11. Perform the electrical adjustment in servo system. (Refer to Sections 3-4-3 and 3-4-5.) 5-205 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 390: Board

    (BVTT3 x 6) 8. Remove the six screws, then pull out the front (upper) chassis assembly. FP-91 board Screw (BVTT3 x 6) Screw (BVTT3 x 6) CN147 Screw (BVTT3 x 6) Screw Front (upper) chassis assembly (BVTT3 x 6) 5-206 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 391 VR-224 board CN31 into the groove of CN224, then set up the FP-91 board vertically. SWC-31 board Adjustment after Replacement 15. Perform the TBC remote control offset adjustment. (Refer to Section 3-9.) 5-207 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 392: Board

    4. Disconnect the harness from the connector (CN69). Screws (PWH3 x 6) CN69 5. Install the KY-364 board in the reverse order Claws of steps 2 through 5. Holes KY chassis Adjustment after replacement is not required. 5-208 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 393: Board

    9. Remove the left side panel. (Refer to Section 2-3-1 in Maintenance Manual Part 1.) 10. Remove the screw and remove the bottom Screw plate retainer. (BVTT3 x 6) 11. Remove the air filter. Bottom plate (Refer to Section 5-6.) retainer 5-209 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 394 CN196 and CN197 . Option board (CP-300) harnesses: CN403 and CN404 17. Disconnect the harnesses from the connectors CN191 CN191, CN192, and CN194 on the CP-278 Connector panel and CP-301 boards. (Refer to Sections 5-32-2 and 5-32-5.) 5-210 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 395 Screws (BVTT3 x 6) unit on the HDD cushion. 21. Disconnect the harnesses and flat cable from the connectors CN140, CN144, CN151, CN144 CN161 CN140 CN152, CN154, CN161, and CN162 on the MB-648 board. CN162 CN154 MB-648 board 5-211 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 396 23. Disconnect the flat cable from the connector (CN147) on the MB-648 board. Screws 24. Install the MB-648 board in the reverse order Screws of steps 2 through 23. 25. Turn the power on and confirm the unit runs in normal condition. 5-212 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 397: Board

    CN2, CN3, CN4, CN11, CN12, CN13, CN14, CN15, CN16, CN17, CN18, CN20, CN21, CN22, CN23, CN24, CN25, CN26, CN27, and CN28 on MS-50 board. CN28 CN27 CN26 CN23 MS-50 board CN21 CN20 CN18 CN22 CN17 CN16 CN11 CN12 CN13 CN14 CN15 5-213 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 398 CN16 on the MS-50 board) requires to thread in the square hole on the center portion of Screw (PWH3 x 8) the MS-50 board. Adjustment after Replacement 7. Perform the all of servo system electrical adjustment. (Refer to Section 3-4.) 5-214 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 399: Board

    7. Install the SE-341 board in the order of steps 5, 6, 4, 3, and 2. Adjustment after Replacement 8. Confirm that the condensation (DEW) sensor operates normally. (Refer to Section 4-2-2 in Maintenance Manual Part 1.) (C003: DEW SENSOR) 5-215 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 400: Board

    SE-378 board so that the six transistors on the both end of the SE-378 board should be Screws (B3 x 8) Screws contact with the HDD sub retainer closely. (B3 x 8) . Adjustment after replacement is not required. 5-216 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 401: Board

    CN147 on the FP-91 board. 8. Remove the six screws, then pull out the front (upper) chassis assembly. FP-91 board Screw (BVTT3 x 6) Screw (BVTT3 x 6) CN147 Screw (BVTT3 x 6) Screw Front (upper) chassis assembly (BVTT3 x 6) 5-217 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 402 9. Undo the PC board holder, then open the FP- 91 board. PC board holder FP-91 board 10. Disconnect the flat cable from with the FP-91 board connector (CN30) on the FP-91 board. CN30 Front (upper) chassis assembly 5-218 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 403 Screw (BVTT3 x 6) Screw (BVTT3 x 6) Screw (BVTT3 x 6) SWC-30 board 12. Install the SWC-30 board in the reverse order of steps 2 through 11. Adjustment after replacement is not required. 5-219 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 404: Board

    4. Remove the three screws. Screw (PWH2.6 x 4) 5. Unlock the SWC-31 board by sliding it in the direction of the arrow, then remove the board. Screw (PWH2.6 x 4) Screw (PWH2.6 x 4) SWC-31 board 5-220 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 405 SYNC/SC control is turned in the REC mode, but it changes when the REC mode is shifted to the PB mode. . The playback sound may be momentarily interrupted when the SYNC/SC control is turned during tape playback. 5-221 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 406: Board

    Then remove the TC-96 board. 6. Install the TC-96 board in the reverse order of steps 2 through 5. Adjustment after Replacement 7. Perform the electrical adjustments or checks of the time code system. (Refer to Section 3-11.) 5-222 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 407 TR-79 board 7. Install the TR-79 board in the reverse order of steps 2 through 6. Adjustment after Replacement 8. Perform the tension offset adjustment. Refer to Section 4-2-7 in Maintenance Manual Part 1. (A008: S/T TENSION OFFSET) 5-223 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 408 7. Remove the ten volume knobs. 8. Remove the nut of the headphone jack. 9. Remove the two screws, and remove the volume bracket. Volume knobs Headphone jack Screw (BVTT3 x 6) Volume bracket Volume knobs Screw (BVTT3 x 6) 5-224 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 409 VR-223 board. VR-223 board Volume bracket 12. Install the VR-223 board in the reverse order of steps 2 through 11. . After tightening the nuts, apply locking compound. Washers . Adjustment after replacement is not Nuts required. 5-225 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 410 7. Remove the ten volume knobs. 8. Remove the nut of the headphone jack. 9. Remove the two screws, and remove the volume bracket. Volume knobs Headphone jack Screw (BVTT3 x 6) Volume bracket Volume knobs Screw (BVTT3 x 6) 5-226 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 411 VR-224 board. VR-224 board Volume bracket 12. Install the VR-224 board in the reverse order of steps 2 through 11. . After tightening the nuts, apply locking Washers compound. Nuts . Adjustment after replacement is not required. 5-227 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 413: Electrical Alignment After Replacement Of Main Parts

    OUS” in each NV-RAM control menu so as not to save the data. (Never execute “SAVE ALL ADJUST DATA” in each NV-RAM control menu.) NV-RAM control menu for the servo system have no function “ALL DATA PREVIOUS”. If executed carelessly the automatic adjustment, turn off the power of the VTR. DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 414: Equipment And Tools Required

    Recording tape Betacam SX Tape (SONY standard product) When using the DNW-A100/A50/A45 in 625/50 mode, the Drum Phase adjustment procedure differs from that in 525/60 mode. And the composite video monitor for 625/50 system is required at the time. DNW-A100/A50/A45...
  • Page 415 Terminator 75 Z, BNC Cleaning tape BCT-5CLN (SONY standard product) Alignment tapes CR5-1B PS (SONY part No. 8-960-096-91) CR5-2A PS (SONY part No. 8-960-098-44) CR8-1A PS (SONY part No. 8-960-098-45) CR8-1B PS (SONY part No. 8-960-096-86) SR2-1 (SONY part No. 8-960-075-11) SR2-1P (SONY part No.

  • Page 416: Content Of Alignment Tapes

    This section describes the contents of alignment tapes to be used in Section 6. CR5-1B (SONY part No. 8-960-096-41): For DNW-A100/A50/A45 CR5-1B PS (SONY part No. 8-960-096-91): For DNW-A100P/A50P/A45P Time (min. : sec.) Video * * * * * LAU tracks...
  • Page 417 No signal No signal 8:00 - 10:00 1 kHz sine wave, 0 VU 1 kHz sin wave, 0VU No signal CR8-1B PS (SONY part No. 8-960-096-86): For DNW-A100P/A50P/A45P only Time (min. : sec.) LAU tracks CTL track Video 0:00 -...
  • Page 418 6-1. General Information for Electrical Alignment SR2-1 (SONY part No. 8-960-075-11): For 525/60 line System SR2-1P (SONY part No. 8-960-075-61): For 625/50 line System Time (min. : sec.) Digital video Digital audio CTL track 0:00 - (Pulse 3.212 MHz (A CH only)

  • Page 419: Servo/Eq Alignment After Replacing The Drum

    A012 : NV-RAM CONTROL 625/50: A011 : RF SWITCHING POS. Alignment Tape SR2-1P Data save A012 : NV-RAM CONTROL PB Equalizer adjustment DNW-A100/A100P: A10 : EQUALIZER(1/2) DNW-A100/A100P A11 : EQUALIZER(2/2) DNW-A50/A45/A50P/A45P: A11 : EQUALIZER REC Current adjustment A12 : REC CURRENT...

  • Page 420: Drum Phase Adjustment

    24. Execute “SAVE ALL ADJUST DATA”. . After saving operation is normally completed, the message “DATA SAVED” will be displayed on the video monitor. 25. Return the unit to its normal system by setting basic menu item 013, 525/625 SYSTEM SELECT. DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 421: Pb Equalizer Adjustment

    . After the adjustment is normally completed, the message “Auto Adjust Complete” will be displayed on the video monitor. 10. Press the MENU button to return to RF ADJUST MODE display. Perform Section 6-2-3. “Recording Current Adjustment” following the completion of this adjustment. DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 422: Recording Current Adjustment

    10. Select A1F: NV-RAM CONTROL. 11. Execute “SAVE ALL ADJUST DATA”. . After saving operation is normally completed, the message “Save Complete” will be displayed on the video monitor. 12. Return to the operation mode by pressing MENU button four times. 6-10 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 423: Analog Video Playback System Adjustment After Replacing The Drum

    A32 : DM VR 1 : EQ1 OXIDE-Y-B OXIDE C A32 : DM VR 1 : EQ1 OXIDE-C-A VIDEO OUTPUT COMPONENT R-Y/B-Y A32 : DM VR 1 : EQ1 OXIDE-C-B Saving data A3F : NV-RAM CONTROL OMC; Over-Modulation Compensation circuit (Continued) 6-11 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 424 10 Impact error offset adjustment 1RV401/TBC-24 Video monitor 1RV601/TBC-24 11 TBC Y/C delay adjustment METAL 1RV500/TBC-24 VIDEO OUTPUT COMPONENT 1RV504/TBC-24 (Note 1) 1RV501/TBC-24 OXIDE VIDEO OUTPUT COMPONENT Note 1: RV504 exists on the TBC-24 board with suffix -13 and higher. 6-12 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 425: Preparation

    2. Extend the DM-89 board with an extension board EX-377. 3. Settings of DNW (1) Set S1100-1 on SS-63 board to ON to display extended menu of the setup menu. S1100 SS-63 board Set S1100-1 to ON S1100 of SS-63 Board 6-13 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 426 RECORDER UNDO RECALL DELETE AUDIO EVENT FEED PREVIEW/ EJECT PLAY F FWD STOP REVIEW AUTO EDIT ENTRY INDEX Illustration is DNW-A100/A100P. Upper/Lower Control Panels VIDEO CHROMA SET UP Y/C DELAY CHROMA PHASE SYNC EMPHASIS CHARACTER DOLBY OUT REF PROCESS CAPSTAN...
  • Page 427 (3) After the tape operation is completed, press the MENU button to cancel the pause of maintenance mode. The displays of the time data display area and video monitor are returned to their previous states. 6-15 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 428: Eq Rf Output Level Adjustment

    (3) METAL Y adjustment Playback the flat field signal portion (24:00 to 26:00) of the alignment tape CR5-1B or CR5-1B PS, and perform the adjustment. (DNW-A100/A50/A45: CR5-1B, DNW-A100P/A50P/A45P: CR5-1B PS) Adjust respectively for Y-A and Y-B channels. Observing the Y-A channel, set the trigger of oscilloscope to the negative (_) slope.
  • Page 429 (6) METAL C adjustment Playback the flat field signal portion (24:00 to 26:00) of the alignment tape CR5-1B or CR5-1B PS, and perform the adjustment. (DNW-A100/A50/A45: CR5-1B, DNW-A100P/A50P/A45P: CR5-1B PS) Adjust respectively for C-A and C-B channels. Observing the C-A channel, set the trigger of oscilloscope to the negative (_) slope.
  • Page 430 Playback the 75% color-bar signal portion (0:00 to 3:00) of the alignment tape CR5-2A or CR5-2A PS, and perform the adjustment. (DNW-A100/A50/A45: CR5-2A, DNW-A100P/A50P/A45P: CR5-2A PS) Adjust respectively for Y-A and Y-B channels. Observing the Y-A channel, set the trigger of oscilloscope to the negative (_) slope.

  • Page 431: Dm Rf Output Level Pre-Adjustment

    (2) METAL Y adjustment Playback the flat field signal portion (24:00 to 26:00) of the alignment tape CR5-1B or CR5-1B PS, and perform the adjustment. (DNW-A100/A50/A45: CR5-1B, DNW-A100P/A50P/A45P: CR5-1B PS) Adjustment point: 1RV211/DM-89(G-6) A = 400 ± 40 mV p-p Specification: (3) Stop the playback of the alignment tape CR5-1B/CR5-1B PS.
  • Page 432 (7) OXIDE C adjustment Playback the 75% color-bar signal portion (0:00 to 3:00) of the alignment tape CR5-2A or CR5-2A PS, and perform the adjustment. (DNW-A100/A50/A45: CR5-2A, DNW-A100P/A50P/A45P: CR5-2A PS) Adjustment point: 1RV407/DM-89(C-5) C = 400 ± 40 mV p-p Specification: (8) Stop the playback of the alignment tape CR5-2A/CR5-2A PS.

  • Page 433: Omc Carrier Balance Adjustment

    (2) OXIDE Y adjustment Playback the pulse & bar signal portion (9:00 to 11:00) of the alignment tape CR5-2A or CR5-2A PS, and perform the adjustment. (DNW-A100/A50/A45: CR5-2A, DNW-A100P/A50P/A45P: CR5-2A PS) Adjustment point: 1RV107/DM-89(F-5) and 1RV108/DM-89(F-5) A > 35 dB Specification: 6.25 MHz...
  • Page 434 (5) OXIDE C adjustment Playback the pulse & bar signal portion (9:00 to 11:00) of the alignment tape CR5-2A or CR5-2A PS, and perform the adjustment. (DNW-A100/A50/A45: CR5-2A, DNW-A100P/A50P/A45P: CR5-2A PS) Adjustment point: 1RV307/DM-89(F-5) and 1RV308/DM-89(F-5) Specification: B > 35 dB 4.9 MHz...
  • Page 435 (10) METAL Y adjustment Playback the flat filed signal portion (24:00 to 26:00) of the alignment tape CR5-1B or CR5-1B PS, and perform the adjustment. (DNW-A100/A50/A45: CR5-1B, DNW-A100P/A50P/A45P: CR5-1B PS) Adjustment points: 1RV105/DM-89(F-4) and 1RV106/DM-89(F-5) Specification: D > 40 dB 7.6 MHz...

  • Page 436: Omc Carrier Balance Adjustment (Provisional)

    In the Y adjustment, perform the provisional adjustment described below only when the spectrum analyz- er is not available for an urgent maintenance. If the provisional adjustment is performed, be sure to readjust the Y signal using the spectrum analyzer at a later date. 6-24 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 437 Trigger: CH-1, negative (_) slope (2) Playback the flat filed signal portion (24:00 to 26:00) of the alignment tape CR5-1B or CR5-1B PS, and perform the adjustment. (DNW-A100/A50/A45: CR5-1B, DNW-A100P/A50P/A45P: CR5-1B PS) Adjustment point: 1RV502/DM-89(E-3) Specification: Maximize the level difference A. (Minimize the fc.) 7.6 MHz...
  • Page 438 CH-2: Trigger: CH-2 (5) Playback the color-bar signal portion (14:00 to 17:00) of the alignment tape CR5-1B or CR5-1B PS, and perform the adjustment. (DNW-A100/A50/A45: CR5-1B, DNW-A100P/A50P/A45P: CR5-1B PS) Adjustment point: 1RV702/DM-89(A-4) Specification: Minimize the moiré of specified part. Minimize the moiré...

  • Page 439: Pb Frequency Response Adjustment

    4.1 MHz (or 5 MHz for PAL) portion is within specification. And confirm that levels at other frequencies are within specifications. (DNW-A100/A50/A45: CR5-1B, DNW-A100P/A50P/A45P: CR5-1B PS) The overlapping waveform of A channel and B channel signals is monitored on the component waveform monitor.
  • Page 440 1 MHz (or 1.5 MHz for PAL) portion is within specification. And confirm that levels at other frequencies are within specifications. (DNW-A100/A50/A45: CR5-1B, DNW-A100P/A50P/A45P: CR5-1B PS) The overlapping waveform of A channel and B channel signals is monitored on the component waveform monitor.
  • Page 441 2 MHz (or 3 MHz for PAL) portion is within specification. And confirm that levels at other frequencies are within specifications. (DNW-A100/A50/A45: CR5-2A, DNW-A100P/A50P/A45P: CR5-2A PS) The overlapping waveform of A channel and B channel signals is monitored on the component waveform monitor.
  • Page 442 1 MHz portion is within specification. And confirm that levels at other frequencies are within specifications. (DNW-A100/A50/A45: CR5-2A, DNW-A100P/A50P/A45P: CR5-2A PS) The overlapping waveform of A channel and B channel signals is monitored on the component waveform monitor.

  • Page 443: Dm Rf Output Level Adjustment

    (2) METAL Y adjustment Playback the flat field signal portion (24:00 to 26:00) of the alignment tape CR5-1B or CR5-1B PS, and perform the adjustment. (DNW-A100/A50/A45: CR5-1B, DNW-A100P/A50P/A45P: CR5-1B PS) Adjustment point: 1RV211/DM-89(G-6) A = 400 ± 40 mV p-p Specification: (3) Stop the playback of the alignment tape CR5-1B/CR5-1B PS.
  • Page 444 (7) OXIDE C adjustment Playback the 75% color-bar signal portion (0:00 to 3:00) of the alignment tape CR5-2A or CR5-2A PS, and perform the adjustment. (DNW-A100/A50/A45: CR5-2A, DNW-A100P/A50P/A45P: CR5-2A PS) Adjustment point: 1RV407/DM-89(C-5) C = 400 ± 40 mV p-p...

  • Page 445: Rf Envelope Adjustment

    (2) Y adjustment Playback the flat filed signal portion (24:00 to 26:00) of the alignment tape CR5-1B or CR5-1B PS, and perform the adjustment. (DNW-A100/A50/A45: CR5-1B, DNW-A100P/A50P/A45P: CR5-1B PS) Adjustment point: 1RV205/DM-89(G-6) A = 2.0 ± 0.2 V dc Specification:...

  • Page 446: Impact Error Offset Adjustment

    (4) Playback the color-bar signal portion (26:00 to 28:00) of the alignment tape CR5-1B or CR5-1B PS. (DNW-A100/A50/A45: CR5-1B, DNW-A100P/A50P/A45P: CR5-1B PS) (5) Adjust the following RVs until the drop-out portions (Y DO and C DO) of color-bars displayed on the video monitor disappear.

  • Page 447: Tbc Y/C Delay Adjustment

    (3) Playback the bowtie signal portion (17:00 to 19:00) of the alignment tape CR5-1B or CR5-1B PS. (DNW-A100/A50/A45: CR5-1B, DNW-A100P/A50P/A45P: CR5-1B PS) (4) Observe the bowtie dip point at which the CH-1 (Y) and CH-2 (B-Y) signals cross. Adjust so that the deviation between the center marker and bowtie dip point is within specification.
  • Page 448 (6) Playback the bowtie signal portion (6:00 to 9:00) of the alignment tape CR5-2A or CR5-2A PS. (DNW-A100/A50/A45: CR5-2A, DNW-A100P/A50P/A45P: CR5-2A PS) (7) Observe the bowtie dip point at which the CH-1 (Y) and CH-2 (B-Y) signals cross. Adjust so that the deviation between the center marker and bowtie dip point is within specification.

  • Page 449: Electrical Adjustment After Replacing The At Head

    . Audio level meter: HEWLETT-PACKARD HP3400A or equivalent . Band-pass filter (1 kHz) . Time code generator: SONY BVG-1600 (for NTSC) / BVG-1600PS (for PAL) or equivalent . Time code reader: SONY BVG-1500 (for NTSC) / BVG-1500PS (for PAL) or equivalent . Oscilloscope: TEKTRONIX 2465B or equivalent .

  • Page 450: Preparation

    –3 –3 –3 –3 TP300 TP400 TP701 –3 >EP–GW< –3 –20 –20 RV300 RV400 E300 E400 E500 E600 COR301 COR401 E300 E400 TP700 TP701 >EP–GW< @fig. 06-04-001E@ @fig. 06-04-002@ APR-12 Board (Side A) APR-13 Board (Side A) 6-38 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 451 UNDO RECALL DELETE AUDIO EVENT FEED PREVIEW/ EJECT PLAY F FWD STOP REVIEW AUTO EDIT ENTRY INDEX This figure is the DNW-A100/A100P. Upper/Lower Control Panels VIDEO CHROMA SET UP Y/C DELAY CHROMA PHASE SYNC EMPHASIS CHARACTER DOLBY OUT REF PROCESS...

  • Page 452: Lau Pb Frequency Response Adjustment

    However, when the optional kit BKNW-105 is equipped in the DNW, connect the audio analyzer to MONITOR OUTPUT L connector. 2. Playback the following specified portions (_20 VU) of the alignment tape CR8-1A or CR8-1A PS, and perform the adjustments and checks. (DNW-A100/A50/A45: CR8-1A, DNW-A100P/A50P/A45P: CR8-1A PS) Playback portion Specifications[dB] Adjustment point...
  • Page 453 COR402 TP300 TP400 TP300 TP400 –3 >EP–GW< –3 –3 >EP–GW< –3 –20 –20 –20 –20 RV300 RV400 RV300 RV400 E300 E400 E300 E400 TP701 TP701 APR-12 Board (Side A) (For OXIDE) APR-12 Board (Side A) (For METAL) 6-41 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 454: Lau Dolby Level Adjustment

    2. Playback the 1 kHz, 0 VU portion (0:00 to 2:55) of alignment tape CR8-1A or CR8-1B PS, and perform the level adjustment. (DNW-A100/A50/A45: CR8-1A, DNW-A100P/A50P/A45P: CR8-1B PS) Adjustment point: 1RV503/APR-12(C-1) _10.0 ± 0.2 dBu (0 dBu = 0.775 V rms)

  • Page 455: Lau Pb Level Adjustment

    MONITOR OUTPUT L connector. 2. Playback the 1 kHz, 0 VU portion (0:00 to 2:55) of alignment tape CR8-1A or CR8-1B PS, and perform the level adjustment. (DNW-A100/A50/A45: CR8-1A, DNW-A100P/A50P/A45P: CR8-1B PS) Adjustment point: 1RV504/APR-12(B-1) +4.0 ± 0.2 dBm (at 600 Z load)

  • Page 456: Lau Pb Phase Adjustment

    The cables for CH1 and CH2 shall be the same in length and have the same wire color on the pigtailed end. 2. For the DNW-A100/A50/A45, playback the 10 kHz, _10 VU portion (3:00 to 4:55) of the alignment tape CR8-1A.

  • Page 457: Ltc Erasure Current Adjustment

    Specification: A > 200 mV p-p (in each PB mode) If the above specification is not satisfied, perform “7-1. Tape Path Adjustment” again. Oscilloscope SS-63 board (Side A) TC-96 board (Side A) E100 TP325 E300 CH-1 TP102 TP301 TP308 TP304 >EP–GW< LV300 S101 TP300 6-45 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 458: Ltc Oa Check

    PLAY, REW, SHUTTLE (_5 times speed), SHUTTLE (_0.21 time speed) Specification: A > 200 mV p-p (in each PB mode) Oscilloscope SS-63 board (Side A) TC-96 board (Side A) E100 TP325 E300 TP102 TP308 TP304 CH-1 >EP–GW< TP100 S101 TP101 6-46 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 459: Ltc Erase Ratio Check

    9. During play back the no-signal-recorded portion in PLAY mode, check PB level on the audio analyz- Specification: _40 dB (Regard a level of the audio-signal-recorded portion as 0 dB.) E300 TP302 TP102 TC-96 Board (Side A) 6-47 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 461: Tape Path Alignment

    AT Head Height Check and Adjustment AT Head Azimuth Check and Adjustment AT Head Head-to-tape Contact Check and Adjustment When adjusting the AT head height or position. AT Head Position Check and Adjustment Audio Level Check and Adjustment in REV mode DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 462: Tape Path Adjustment

    4. Cassette Tape The tape path adjustment is performed after the cassette compertment removal. Then, it is necessary to make a modification to the cassette tape and alignment tape that are used for tape path adjustment as follows. DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 463 In this state, RV100 variable resistor on the SS-63 board becomes the tracking control volume (and the LED D112 lights). When the EJECT button is pressed or S100 switch on the SS-63 board is pushed more than 1 sec. after adjustment, the tracking control is fixed. DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 464 For the contents of the following alignment tape, refer to Section 1-4. (1) SR2-1 (For 525/60 system) : 8-960-075-11 SR2-1P (For 625/50 system) : 8-960-075-61 (2) CR2-1B (For DNW-A100/A50/A45) : 8-960-096-01 CR2-1B PS (For DNW-A100P/A50P/A45P) : 8-960-096-51 (3) CR8-1A (For DNW-A100/A50/A45) : 8-960-097-45...
  • Page 465 The locking compound that applied to other surrounding parts must be wiped off with gauze or soft cloth. . Locking compound : 7-432-114-11 T drawer arm (Slant guide) AT head assembly CTL/FE head assembly S tension regulator DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 466: At Head Zenith Check And Adjustment

    AT head and flatness plate as TG-4 guide reference in step (1). AT head If the specification is satisfied, perform step If not, perform steps 3 and later. Flatness plate Spec. : A = No clearance B = No clearance AT Head Zenith Check DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 467 Clean the surface of the AT head, AT erase head, and TG-4 guide using a cleaning cloth moistened with cleaning fluid. Flatness plate AT head Zenith adjustment screw . Removing/Attaching the CL Guide Rail Screw(B3 x 8) Screw(B3 x 8) CL guide rail AT Head Zenith Adjustment DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 468: Tape-Running Check And Adjustment

    Lead of drum entrance side The tape runs in contact with the drum lead and If specification 1 is not satisfied, perform steps 9 without any curl at the lead. and 10. Tape Running Check at Tape Approaching Side DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 469 8, and perform the video tracking adjustment (Refer to Section 7-1-3). If the specification 1 is not satisfied, perform the adjustment in step 9 again. TG-2 TG-1 (S tension regulator guide) TG-1 height adjustment nut TG-0 Tape-running Adjustment at Tape Appoaching Side DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 470 Check that the tape-running condition satisfies specification 3 at TG-10 and the T tape guide of specification 2. the L cassette. If specification 2 is not satisfied, perform steps 12 If specification 3 is not satisfied, perform step 15. and 14. 7-10 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 471 The tape runs not in contact with the upper and lower flanges. Take-up side tape guide of cassette The tape runs without any curl at the upper and lower portions of the tape guide. Tape-running Check at Tape Leaving Side 7-11 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 472 Perform steps 2 through 8 again. If the specification 2 is not satisfied, perform the adjustment in step 12 again. (If the specification 2 is not satisfied in REV mode or VAR _1/30 mode, perform the adjust- ment in step 13 again.) 7-12 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 473 (PSW3 x 8) Notch Adjustment plate . TG-5 Height adjustment (Only when the specification is not satisfied in REV x 10 mode or VAR x –1/30 mode) <Unthreading end mode> TG-5 (Threading roller) Tape-running Adjustment at Tape Leaving Side 7-13 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 474: Video Tracking Check And Adjustment

    . Alignment tape SR2-1 (For 525/60 system): 8-960-075-11 . Alignment tape SR2-1P (For 625/50 system): 8-960-075-61 . Alignment tape CR2-1B (For DNW-A100/A50/A45): 8-960-096-01 . Alignment tape CR2-1B PS (For DNW-A100P/A50P/A45P): 8-960-096-51 . Oscilloscope (Tektronix 2465B or equivalent) . Adjustment mirror (circular): J-6080-029-A .
  • Page 475 (1) through (5) in the same RF waveform of A5 RF waveform of A1 RF waveform of A5 way. <For DNW-A100/A100P> . CH-1: TP500, CH-2: TP100 . CH-1: TP400, CH-2: TP101 . CH-1: TP600, CH-2: TP101 . CH-1: TP1300, CH-2: TP102 Spec.
  • Page 476 (5) Check that the “Switching PB” is indicated, and press the SET button. Then, mark is indicated at the right up corner on the monitor. Refer to Section 4 of Maintenance Manual Part 1 “Maintenance Mode” for more infor- mation about the maintenance mode. 7-16 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 477 TP500 (3) Check that RF waveform is output from CH- TP300 TP1400 TP400 1.(Spec.3) TP1300 <SS-63 board, side A> TP325 . Alignment tape: SR2-1/P (15:00 to 20:00) CH-1 RF waveform Spec. 3 : RF waveform is output. 7-17 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 478 100 < 20% – Continued on the next page. – 100 < 20% Fluctuation amounts (a, b, c) at the drum center portion, entrance side and exit side are less than 20% of the average maximum level (D). 7-18 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 479 100 > 70% (Drum entrance side) 100 > 70% (Drum exit side) . Alignment tape : SR2-1/SR2-1P (00:00 to 15:00) (Tracking VR : Not effective) Spec. 7 : No waveform lacking exists. Video Tracking Check (F. FWD, REW) 7-19 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 480 PLAY mode (a) and tape running at the tape leaving side. returns it to the level in normal PLAY (Refer to Section 7-1-2.) mode within 1 second after servo locks up. Video Tracking Check (REW 8 8 PLAY) 7-20 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 481 Turn 30d more flat. (7) Turn the upper flange of TG-2 to clockwise so that the upper flange contacts the tape. TG-1 – Continued on the next page. – 7-21 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 482 The tape curl is less than 1/10 of the tape width. 4 Lead of drum entrance side The tape runs in contact with the drum lead and without any curl at the lead. Tracking Adjustment at Drum Entrance Side 7-22 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 483 1 sec. so that the tracking VR becomes S100 RV100(Tracking VR) to be effective. (3) Turn RV100 on the SS-63 board clockwise and adjust the center portion of the RF envelope waveform to the maximum output level. – Continued on the next page. – 7-23 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 484 TG-4. Markers Markers – Continued on the next page. – <Fig. 2> Be flat If the pressure against the tape at TG-3 is too much, the waveform becomes as shown in the right figure. (NG) Markers 7-24 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 485 Perform the checks and adjustments de- scribed below. . AT head height (Refer to Section 7-1-6.) . AT head azimuth (Refer to Section 7-1-7.) . AT head head-to-tape contact (Refer to Section 7-1-8.) . AT head position (Refer to Section 7-1-9.) 7-25 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 486: Ctl Head Height Check And Adjustment

    (2) Check that the level decreases when portion B of the tape is pushed up. If the level increases, perform step 8. Spec.: The level decreases when pressing down and pushing up the alignment tape. CTL Head Height Check 7-26 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 487 8. In Case the Level Increases when the Tape is Pushed Up (Fig. 2) Turn the adjustment nut clockwise and adjust so that the output waveform is maximum. Adjustment nut Maximize <Fig. 2> CTL head Adjustment nut Maximize CTL Head Height Adjustment 7-27 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 488: Ctl Head Position Check And Adjustment

    TRIG : 5 V/DIV TIME : 5 ms/DIV Preparation 3. Set the Alignment Tape Set the SR2-1/P and put a weight on the cassette so that it does not rise up. Weight about 1000 g is suitable. 7-28 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 489 (L ) is 80% and more against the maximum output level (L under the state of the tracking is effective. If the specification is not satisfied, perform steps 8 and later. CTL Head Position Check 7-29 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 490 15 ms Perform to steps 5 through 7 again. CTL Head Position Adjustment In Case the Adjustment is Performed 12. Adjust the AT Head Position Refer to Section 7-1-9. 13. Locking Compound Applying Refer to Section 7-1. 7-30 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 491: At Head Height Check And Adjustment

    Be sure to perform adjustments (or checks) according to “In Case the Adjustment is Performed” in this section when the AT head height is adjusted. Tools . Alignment tape CR8-1A (For DNW-A100/A50/A45): 8-960-097-45 . Alignment tape CR8-1A PS (For DNW-A100P/A50P/A45P): 8-960-098-45 .
  • Page 492 B of the tape is pushed <Audio output waveform> If both levels increase, perform step 8. CH-1 CH-2 Spec. : The portion C widens when pressing down and pushing up the alignment tape. AT Head Height Check 7-32 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 493 Refer to steps 5 and 6 in this section. 13. Re-check the AT Head Height adjustment screw Perform the steps 9 through 11 again. 14. Locking Compound Applying Refer to Section 7-1. CH-1 Minimize CH-2 AT Head Height Adjustment 7-33 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 494: At Head Azimuth Check And Adjustment

    Be sure to perform adjustments (or checks) according to “In Case the Adjustment is Performed” in this section when the AT head azimuth is adjusted. Tools . Alignment tape CR8-1A (For DNW-A100/A50/A45): 8-960-097-45 . Alignment tape CR8-1A PS (For DNW-A100P/A50P/A45P): 8-960-098-45 .
  • Page 495 (5) If the specification in any of steps (1), (2) or (3) is not satisfied, perform steps 7 and later. <Lissajous waveform> Upper-right(OK) Upper-left(NG) 6 cm 6 cm Phase difference 0 Spec. : A < 0.52 cm AT Head Azimuth Check 7-35 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 496 Refer to steps 5 and 6 in this section. 6 cm 12. Re-check the AT head Rerform the steps 8 through 10 again. 13. Locking Compound Applying Refer to Section 7-1. Spec. : A < 0.52 cm AT Head Azimuth Adjustment 7-36 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 497: At Head Head-To-Tape Contact Check And Adjustment

    Be sure to perform adjustments (or checks) according to “In case the adjustment is performed” in this section when the AT head head-to-tape contact is adjusted. Tools . Alignment tape CR8-1A (For DNW-A100/A50/A45): 8-960-097-45 . Alignment tape CR8-1A PS (For DNW-A100P/A50P/A45P): 8-960-098-45 .
  • Page 498 If the specification is not satisfied, perform steps 7 and later. <AUDIO output waveform> CH-1 CH-2 Spec. : Both increasing values of the output levels in CH-1 and CH-2 are within 5%. AT Head Head-to-tape Contact Check 7-38 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 499 Maximize CH-2 11. Check the AT Head Position Refer to Section 7-1-9. AT Head Head-to-tape Contact Adjustment 12. Check the AT Head Height Refer to Section 7-1-6. 13. Check the AT Head Azimuth Refer to Section 7-1-7. 7-39 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 500: At Head Position Check And Adjustment

    CTL's 65:35 pulse and PB LTC's 65:35 waveform signals satisfies the specifica- Spec. : A = 0 ±600 us tion. If the specification is not satisfied, perform steps AT Head Position Check 7 and later. 7-40 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 501 15. Check the AT Head Head-to-tape Contact Refer to Section 7-1-8. 16. Check the AT Head Position Refer to steps 5 and 6 in this section. 17. Locking Compound Applying Refer to Section 7-1. Remove/Attach the CL Guide Rail 7-41 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...

  • Page 502: Audio Level Check And Adjustment In Rev Mode

    7-1-10. Audio Level Check and Adjustment in REV Mode 7-1-10. Audio Level Check and Adjustment in REV Mode Tools . Alignment tape CR8-1A (For DNW-A100/A50/A45): 8-960-097-45 . Alignment tape CR8-1A PS (For DNW-A100P/A50P/A45P): 8-960-098-45 . Oscilloscope (Tektronix 2465B or equivalent) .
  • Page 503 CH-1 x 100 satisfies specification 1. (2) Check that the audio output level B in CH-2 Audio Level Check in REV Mode satisfies specification 1. If specification 1 is not satisfied, perform steps 9 and later. 7-43 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 504 The tape runs in contact with the lower flange. The tape curl is less than 1/10 of the tape width. TG-5(Threading roller) The tape runs without any curl at the upper and lower flanges. Audio Level Adjustment in REV Mode 7-44 DNW-A100/A50/A45 DNW-A100P/A50P/A45P...
  • Page 505 The material contained in this manual consists of screws, and all other exposed metal parts for AC information that is the property of Sony Corporation and leakage. Check leakage as described below. is intended solely for use by the purchasers of the equipment described in this manual.
  • Page 506 DNW-A100 (UC) DNW-A100P (CE, UC) DNW-A50 (UC) DNW-A50P (CE, UC) DNW-A45 (UC) Printed in Japan Sony Corporation DNW-A45P (CE, UC) E 1999. 6 08 Broadcasting & Professional Systems Company 9-967-659-02 ©1997...

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