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Sony CDX-L450V Service Manual
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Sony CDX-L450V Service Manual

Fm/am compact disc player
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SERVICE MANUAL
Ver 1.1 2001. 11
• The CD sections have no adjustments.

SPECIFICATIONS

CD player section
Signal-to-noise ratio
90 dB
Frequency response
10 – 20,000 Hz
Wow and flutter
Below measurable limit
Tuner section
FM
Tuning range
FM tuning interval:
50 kHz/200 kHz
switchable
87.5 – 108 MHz
(at 50 kHz step)
87.5 – 107.9 MHz
(at 200 kHz step)
Antenna terminal
External antenna connector
Intermediate frequency 10.7 MHz
Usable sensitivity
11 dBf
Selectivity
75 dB at 400 kHz
Signal-to-noise ratio
65 dB (stereo),
68 dB (mono)
Harmonic distortion at 1 kHz
0.7% (stereo),
0.5% (mono)
Separation
33 dB at 1 kHz
Frequency response
30 – 15,000 Hz
AM
Tuning range
AM tuning interval:
9 kHz/10 kHz
switchable
531 – 1,602 kHz
(at 9 kHz step)
530 – 1,710 kHz
(at 10 kHz step)
Antenna terminal
External antenna connector
Intermediate frequency 10.7 MHz/450 kHz
Sensitivity
30 µV
Sony Corporation
9-873-251-02
2001K0400-1
e Vehicle Company
© 2001. 11
Published by Sony Engineering Corporation
CDX-L450V
Model Name Using Similar Mechanism
CD Drive Mechanism Type
Optical Pick-up Name
Power amplifier section
Outputs
Speaker outputs
(sure seal connectors)
Speaker impedance
4 – 8 ohms
Maximum power output 50 W × 4 (at 4 ohms)
General
Outputs
Audio output
Power amplifier control
lead
Power aerial relay control
lead
Tone controls
Bass ±9 dB at 100 Hz
Treble ±9 dB at 10 kHz
Power requirements
12 V DC car battery
(negative earth)
Approx. 178 × 50 × 176 mm
Dimensions
(w/h/d)
Approx. 182 × 53 × 161 mm
Mounting dimensions
(w/h/d)
Mass
Approx. 1.2 kg
Supplied accessories
Parts for installation and
connections (1 set)
Front panel case (1)
Note
This unit cannot be connected to a digital
preamplifier or an equalizer.
Design and specifications are subject to change without
notice.
FM/AM COMPACT DISC PLAYER
E Model
CDX-L450X/L470X
MG-393X-121//K
KSS-720A
1

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Summary of Contents for Sony CDX-L450V

  • Page 1: Specifications

    530 – 1,710 kHz (at 10 kHz step) Antenna terminal External antenna connector Intermediate frequency 10.7 MHz/450 kHz Sensitivity 30 µV FM/AM COMPACT DISC PLAYER Sony Corporation 9-873-251-02 2001K0400-1 e Vehicle Company © 2001. 11 Published by Sony Engineering Corporation...
  • Page 2 COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.

  • Page 3: Table Of Contents

    CDX-L450V TABLE OF CONTENTS 1. GENERAL Location of controls ..............4 Getting Started ................. 4 CD Player ................5 Radio ..................5 Other Functions ............... 6 Connections ................7 2. DISASSEMBLY 2-1. Sub Panel Assy ..............9 2-2. CD Mechanism Block ............10 2-3.
  • Page 4 CDX-L450V SECTION 1 GENERAL This section is extracted from instruction manual.
  • Page 5 CDX-L450V...

  • Page 6: Connections

    CDX-L450V Connections...
  • Page 7 CDX-L450V...
  • Page 8 CDX-L450V...

  • Page 9: Disassembly

    CDX-L450V SECTION 2 DISASSEMBLY Note : This set can be disassemble according to the following sequence. Sub Panel Assy CD Mechanism Block Main Board Heat Sink Chassis (T) Sub Assy Lever Section Shaft Roller Assy Servo Board Floating Block Assy Optical Pick-up Block 2-1.

  • Page 10: Cd Mechanism Block

    CDX-L450V 2-2. CD MECHANISM BLOCK 7 bracket (CD) 5 CD mechanism block 6 PTT 2.6x6 2 PTT 2.6x6 1 PTT 2.6x6 4 CNP701 2-3. MAIN BOARD 3 screw (+BTT) 5 MAIN board 4 screws (+BTT) 2 PTT 2.6x8 1 PTT 2.6x8...

  • Page 11: Heat Sink

    CDX-L450V 2-4. HEAT SINK 6 heat sink 5 PTT 2.6x8 4 PTT 2.6x8 3 PTT 2.6x12 2 PTT 2.6x8 1 PTT 2.6x8 2-5. CHASSIS (T) SUB ASSY 2 P 2x3 3 P 2x3 1 Unsolder the 4 chassis (T) sub assy lead wires.

  • Page 12: Lever Section

    CDX-L450V 2-6. LEVER SECTION 5 guide (disc) 6 lever (R) 3 tension spring (LR) 7 lever (L) 1 special screw 2 IN SELF SW board 4 claws 2-7. SERVO BOARD 7 special screw 6 special screws 2 CN2 3 Removal the solders.

  • Page 13: Shaft Roller Assy

    CDX-L450V 2-8. SHAFT ROLLER ASSY • When installing, take note of the positions arm (roller) and washers. (Fig. 1) 3 retaing ring (RA) shaft retainer 4 shaft retainer washer washer shaft retainer retaing ring (RA) Fig. 1 5 shaft roller assy...

  • Page 14: Optical Pick-Up Block

    CDX-L450V 2-10. OPTICAL PICK-UP BLOCK 5 P 2x3 1 P 2x3 6 spring (feed), plate 4 pick-up flexible board 2 sled motor assy 3 optical pick-up block 7 shaft (feed) assy...

  • Page 15: Electrical Adjustments

    CDX-L450V SECTION 3 ELECTRICAL ADJUSTMENTS TEST MODE TUNER SECTION 0 dB = 1 µV This set have the test mode function. In the test mode, FM Auto Scan/Stop Level and AM Auto Scan/Stop Level check can be Cautions during repair performed easier than it in ordinary procedure.
  • Page 16 CDX-L450V FM Stereo Separation Adjustment AM Auto Scan/Stop Level Check Setting : Note : This adjustment should be performed after the FM Auto SOURCE button : FM Scan / Stop Level Adjustment is done. FREQUENCY SELECT switch : FM 50k...

  • Page 17: Diagrams

    CDX-L450V SECTION 4 DIAGRAMS 4-1. IC PIN DESCRIPTION • IC801 µPD780024AGK-B26-9ET (SYSTEM CONTROLLER) Pin No. Pin Name Pin Description D SW Down switch detection input IN SW Disc in switch detection input PH3 detection input (Not used in this set)
  • Page 18 CDX-L450V Pin No. Pin Name Pin Description P.ON System power supply control output X SO CD DSP IC serial data output X SI CD DSP IC serial data input X SCK CD DSP IC serial clock output RFOK CD servo IC RFOK signal input...

  • Page 19: Block Diagram -Cd Section

    CDX-L450V 4-2. BLOCK DIAGRAM — CD SECTION — RF AMP,DIGITAL SERVO DIGITAL SIGNAL PROCESSOR OPTICAL PICK-UP KSS-720A (Page 20) TUNER SECTION LOUT SYSTEM CONTROL ROUT IC801(1/3) CONV R-CH DEMOD PACK TSTB DSUB CODE TSCK PROCESS CONV. X_SO FORCUS X_SI ERROR...

  • Page 20: Block Diagram -Tuner Section

    CDX-L450V 4-3. BLOCK DIAGRAM — TUNER SECTION — PJ401 AUDIO OUT REAR R-CH POWER AMP ELECTRONIC VOLUME (Page 19) IC101 IC401 CNP501 LF OUT TUNER UNIT TU601 SECTION CNJ601 FM_ANT L-CH LR OUT (ANTENNA) R-CH R-CH Q102 Q101 AM_ANT 16 AUX-IN...

  • Page 21: Block Diagram -Display Section

    CDX-L450V 4-4. BLOCK DIAGRAM — DISPLAY SECTION — 4-5. CIRCUIT BOARDS LOCATION SYSTEM CONTROL LCD DRIVE SERVO board IC801 (3/3) IC551 KEY 0 KEY 0 IN SELF SW board KEY MATRIX LCD DO DATA DATA SPEAKER board S501-511, SEG1 LCD CLK...

  • Page 22: Printed Wiring Boards -Cd Mechanism Section

    CDX-L450V 4-6. PRINTED WIRING BOARDS — CD MECHANISM SECTION — • Refer to page 21 for Circuit Boards Location. • Waveforms THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS. — Servo Board — (In addition to this, the necessary note is (MODE: CD PLAY) printed in each block.)
  • Page 23 CDX-L450V • Semiconductor Location Ref. No. Location (Page 25)

  • Page 24: Schematic Diagram -Cd Mechanism Section

    CDX-L450V • Refer to page 22 for Note and Waveforms. 4-7. SCHEMATIC DIAGRAM — CD MECHANISM SECTION — • Refer to page 30 for IC Block Diagrams. IC B/D IC B/D (Page 27) Note: • Voltage and waveforms are dc with respect to ground under no-signal (detuned) conditions.

  • Page 25: Printed Wiring Board -Main Section

    CDX-L450V • Refer to page 22 for Note. 4-8. PRINTED WIRING BOARD — MAIN SECTION — • Refer to page 21 for Circuit Boards Location. (Page 23) • Semiconductor Location Ref. No. Location Ref. No. Location Ref. No. Location D401...

  • Page 26: Schematic Diagram -Main Section (1/2)

    CDX-L450V • Refer to page 22 for Note. 4-9. SCHEMATIC DIAGRAM — MAIN SECTION (1/2) — • Refer to page 30 for IC Block Diagrams. IC B/D IC B/D (Page 27) Note: • Voltage is dc with respect to ground under no-signal (detuned) condition.

  • Page 27: Schematic Diagram -Main Section (2/2)

    CDX-L450V 4-10. SCHEMATIC DIAGRAM — MAIN SECTION (2/2) — • Refer to page 22 for Note and Waveforms. (Page 26) Note: • Voltage and waveforms are dc with respect to ground under no-signal (detuned) conditions. no mark : FM (Page ) : AM <...

  • Page 28: Printed Wiring Board –Display Section

    CDX-L450V • Refer to page 22 for Note. 4-11. PRINTED WIRING BOARD — DISPLAY SECTION — • Refer to page 21 for Circuit Boards Location. (Page 25) • Semiconductor Location Ref. No. Location Ref. No. Location Ref. No. Location Ref. No.

  • Page 29: Schematic Diagram -Display Section

    CDX-L450V 4-12. SCHEMATIC DIAGRAM — DISPLAY SECTION — • Refer to page 22 for Note. (Page 27) Note: • Voltage is dc with respect to ground under no-signal (detuned) condition. no mark : FM...
  • Page 30 CDX-L450V • IC Block Diagrams IC1 µPD63711GC-8EU IC2 BA5810FP-E2 BIAS 71 70 LOADING PRE OPIN4+ FWD REV – OPIN4– MICROCOMPUTER INTERFACE AGCI 50 C2D3 LDCONT COMPARATOR 49 C2D2 CD-TEXT DECODER POWER OPOUT4 SAVE 48 C2D1 SUB-CODE PROCESSOR OPIN3+ MEMORY 47 C1D2 –...
  • Page 31 CDX-L450V IC401 LC75421M-TLM LROUT RROUT LFOUT RFOUT INTERFACE LFIN 32 RFIN LOUT ROUT LBASS2 RBASS2 CONTROL LOGIC CONTROL CIRCUIT CIRCUIT CIRCUIT LBASS1 10 RBASS1 LVREF RVREF LTRE 11 RTRE 26 RIN LSELO RSELO – – VREF...

  • Page 32: Exploded Views

    CDX-L450V SECTION 5 EXPLODED VIEWS NOTE: • The mechanical parts with no reference • Color Indication of Appearance Parts The components identified by number in the exploded views are not supplied. mark 0 or dotted line with mark Example : •...

  • Page 33: Front Panel Section

    CDX-L450V 5-2. FRONT PANEL SECTION not supplied (DISPLAY board) LCD501 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark X-3381-041-1 PANEL SUB ASSY, FRONT * 60 3-227-293-01 SHEET (LCD) 3-224-605-21 BUTTON (SEEK/AMS) * 61 3-224-609-11 PLATE (LCD), GROUND...

  • Page 34: Cd Mechanism Section (1)

    CDX-L450V 5-3. CD MECHANISM SECTION (1) (MG-393X-121//K) M903 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark * 101 1-676-709-11 IN SELF SW BOARD 3-040-040-01 ARM (ROLLER) 3-040-039-01 CHASSIS (T) * 111 A-3283-212-A SERVO BOARD, COMPLETE 3-040-038-01 SPRING (LR), TENSION...

  • Page 35: Cd Mechanism Section (2)

    CDX-L450V 5-4. CD MECHANISM SECTION (2) (MG-393X-121//K) Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-040-025-01 ARM, CHUCKING A-3307-422-A CHASSIS (M) COMPLETE ASSY 3-040-031-01 DAMPER (T) 3-040-059-01 SPRING (TR), TENSION 3-040-056-01 LEVER (D) 3-040-057-01 LEVER (LOCK)

  • Page 36: Cd Mechanism Section (3)

    CDX-L450V 5-5. CD MECHANISM SECTION (3) (MG-393X-121//K) M901 M902 The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified. Ref. No. Part No. Description Remark Ref. No. Part No.

  • Page 37: Electrical Parts List

    CDX-L450V SECTION 6 DISPLAY ELECTRICAL PARTS LIST NOTE: • Due to standardization, replacements in • Items marked “*” are not stocked since The components identified by mark 0 or dotted line with mark the parts list may be different from the they are seldom required for routine service.
  • Page 38 CDX-L450V DISPLAY IN SELF SW MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R554 1-216-807-11 METAL CHIP 1/16W 1-676-709-11 IN SELF SW BOARD R555 1-216-819-11 METAL CHIP 1/16W **************** R559 1-216-818-11 METAL CHIP 1/16W R560...
  • Page 39 CDX-L450V MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C603 1-164-227-11 CERAMIC CHIP 0.022uF C915 1-110-654-11 DOUBLE LAYERS 0.047F 5.5V C604 1-162-970-11 CERAMIC CHIP 0.01uF C916 1-164-156-11 CERAMIC CHIP 0.1uF C605 1-104-665-11 ELECT 100uF C919...
  • Page 40 CDX-L450V MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark JR101 1-216-864-11 METAL CHIP 1/16W Q929 8-729-055-96 TRANSISTOR SRC1203SF JR601 1-216-864-11 METAL CHIP 1/16W JR604 1-216-864-11 METAL CHIP 1/16W < RESISTOR > JR901 1-216-864-11 METAL CHIP...
  • Page 41 CDX-L450V MAIN SERVO Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R708 1-216-821-11 METAL CHIP 1/16W < SWITCH > R709 1-216-821-11 METAL CHIP 1/16W R710 1-216-821-11 METAL CHIP 1/16W S901 1-762-638-21 SWITCH, TACTILE (RESET) R711 1-216-821-11 METAL CHIP...
  • Page 42 CDX-L450V SERVO SL SW SPEAKER Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 1-164-227-11 CERAMIC CHIP 0.022uF < VIBRATOR > 1-162-967-11 CERAMIC CHIP 0.0033uF 10% 1-125-837-00 CERAMIC CHIP 6.3V 1-781-759-21 VIBRATOR, CERAMIC (CHIP TYPE) 1-164-227-11 CERAMIC CHIP 0.022uF...
  • Page 43 CDX-L450V Ref. No. Part No. Description Remark PARTS FOR INSTALLATION AND CONNECTIONS *************************************** 3-014-370-21 FRAME, FITTING X-3366-405-1 SCREW ASSY (EXP), FITTING 3-224-614-01 COLLAR 3-934-325-01 SCREW (+K 5X8 TP) 1-465-459-21 ADAPTOR, ANTENNA 3-030-929-01 SPRING, FITTING 1-776-527-11 CORD (WITH CONNECTOR) (ISO) (POWER)
  • Page 44 CDX-L450V MEMO...
  • Page 45 CDX-L450V E Model SERVICE MANUAL Ver 1.1 2001. 11 SUPPLEMENT-1 File this supplement with the service manual. Subject : Change of Servo and Main Boards Change of CD Mechanism (MG-393XA-121//K) (ENG-01012) 1. CHANGE OF SERVO AND MAIN BOARDS When performing service and inspection, check the suffix of the part number of the servo and main boards.
  • Page 46 CDX-L450V - MAIN BOARD (COMPONENT SIDE) - MAIN BOARD Part No. Former : 1-680-662-11 New : 1-683-601-11 2. CHANGE OF CD MECHANISM (MG-393XA-121//K) • The CD mechanism is changed as follows: Former CD Drive Mechanism Type MG-393X-121//K MG-393XA-121//K...
  • Page 47 CDX-L450V TABLE OF CONTENTS • Waveforms THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS. — Servo Board — (In addition to this, the necessary note is 1. Printed Wiring Boards –CD Mechanism Section– ....4 (MODE: CD PLAY) printed in each block.)

  • Page 48: Printed Wiring Boards -Cd Mechanism Section

    CDX-L450V 1. PRINTED WIRING BOARDS — CD MECHANISM SECTION — • Refer to page 21 of Service Manual for Circuit Boards Location.
  • Page 49 CDX-L450V • Semiconductor Location Ref. No. Location (Page 7)
  • Page 50 CDX-L450V • Refer to page 3 for Note and Waveforms. 2. SCHEMATIC DIAGRAM — CD MECHANISM SECTION — • Refer to page 30 of Service Manual for IC Block Diagrams. TP9 TP8 TP77 TP78 TP89 TP79 TP80 TP81 TP45 TP82...

  • Page 51: Printed Wiring Boards -Main Section

    CDX-L450V • Refer to page 3 for Note. 3. PRINTED WIRING BOARDS — MAIN SECTION — • Refer to page 21 of Service Manual for Circuit Boards Location. C615 (Page 5) • Semiconductor Location Ref. No. Location Ref. No. Location Ref.

  • Page 52: Schematic Diagram -Main Section (1/2)

    CDX-L450V • Refer to page 3 for Note. 4. SCHEMATIC DIAGRAM — MAIN SECTION (1/2) — • Refer to page 30 of Service Manual for IC Block Diagrams. PJ401 C105 C205 C401 D444 IC101 R105 R401 D922 Q101 R109 C201...

  • Page 53: Schematic Diagram -Main Section (2/2)

    CDX-L450V 5. SCHEMATIC DIAGRAM — MAIN SECTION (2/2) — • Refer to page 3 for Note and Waveforms. (Page 8) Note: • Voltage and waveforms are dc with respect to ground under L703 no-signal (detuned) conditions. no mark : FM...

  • Page 54: Electrical Parts List

    CDX-L450V IN SELF SW MAIN MAIN 6. ELECTRICAL PARTS LIST NOTE: Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark • Due to standardization, replacements in • Items marked “*” are not stocked since When indicating parts by reference...
  • Page 55 CDX-L450V MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark Q402 8-729-055-96 TRANSISTOR SRC1203SF R605 1-216-841-11 METAL CHIP 1/16W Q603 8-729-030-51 TRANSISTOR 2SA1515S-R-TP R606 1-216-841-11 METAL CHIP 1/16W Q604 8-729-055-96 TRANSISTOR SRC1203SF R607 1-216-827-11 METAL CHIP 3.3K...
  • Page 56 CDX-L450V MAIN SERVO Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R908 1-216-841-11 METAL CHIP 1/16W 1-162-924-11 CERAMIC CHIP 56PF R909 1-216-828-11 METAL CHIP 3.9K 1/16W 1-162-924-11 CERAMIC CHIP 56PF R910 1-216-836-11 METAL CHIP 1/16W 1-162-909-11 CERAMIC CHIP 0.25PF 50V...
  • Page 57 CDX-L450V SERVO SL SW SPEAKER Ref. No. Part No. Description Remark 1-218-344-11 RES-CHIP 7.5K 1/16W 1-216-837-11 METAL CHIP 1/16W 1-216-839-11 METAL CHIP 1/16W 1-216-833-11 METAL CHIP 1/16W 1-216-840-11 METAL CHIP 1/16W 1-216-835-11 METAL CHIP 1/16W 1-216-837-11 METAL CHIP 1/16W 1-216-841-11 METAL CHIP...

  • Page 58: Exploded Views

    CDX-L450V 7. EXPLODED VIEWS NOTE: • The mechanical parts with no reference • Color Indication of Appearance Parts The components identified by number in the exploded views are not supplied. mark 0 or dotted line with mark Example : • Items marked “*” are not stocked since 0 are critical for safety.

  • Page 59: Cd Mechanism Section (1)

    CDX-L450V 7-2. CD MECHANISM SECTION (1) (MG-393XA-121//K) M903 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 1-683-283-11 IN SELF SW BOARD 3-221-779-01 BRACKET (MOTOR) 3-040-039-02 CHASSIS (T) 3-040-034-01 SPRING (RA), TENSION 3-040-038-01 SPRING (LR), TENSION 3-040-042-01 WASHER...

  • Page 60: Cd Mechanism Section (2)

    CDX-L450V 7-3. CD MECHANISM SECTION (2) (MG-393XA-121//K) not supplied Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-040-025-01 ARM, CHUCKING 3-040-033-01 SPRING (KF1), TENSION 3-040-031-01 DAMPER (T) A-3307-422-A CHASSIS (M) COMPLETE ASSY 3-040-056-01 LEVER (D) 3-040-059-01 SPRING (TR), TENSION...

  • Page 61: Cd Mechanism Section (3)

    CDX-L450V 7-4. CD MECHANISM SECTION (3) (MG-393XA-121//K) M901 M902 The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified. Ref. No. Part No. Description Remark Ref. No. Part No.
  • Page 62 CDX-L450V REVISION HISTORY Clicking the version allows you to jump to the revised page. Also, clicking the version at the upper right on the revised page allows you to jump to the next revised page. Ver. Date Description of Revision 2001.

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