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Dell 2005FPW - UltraSharp - 20.1" LCD Monitor Service Manual
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Dell 2005FPW - UltraSharp - 20.1" LCD Monitor Service Manual

Service manual
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COLOR MONITOR

SERVICE MANUAL

CHASSIS NO. : CL-74
MODEL: 2005FPW
CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

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Summary of Contents for Dell 2005FPW - UltraSharp - 20.1" LCD Monitor

  • Page 1: Total Amount Of Bright Dots

    COLOR MONITOR SERVICE MANUAL CHASSIS NO. : CL-74 MODEL: 2005FPW CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

  • Page 2: Table Of Contents

    CONTENTS SPECIFICATIONS ........... 2 ADJUSTMENT ............12 PRECAUTIONS ............3 TROUBLESHOOTING GUIDE ......14 TIMING CHART ............7 WIRING DIAGRAM ..........18 DISASSEMBLY ............8 EXPLODED VIEW...........19 BLOCK DIAGRAM ........... 9 REPLACEMENT PARTS LIST .......21 DESCRIPTION OF BLOCK DIAGRAM....10 SCHEMATIC DIAGRAM ......... 26 SPECIFICATIONS 1.

  • Page 3: Precautions

    PRECAUTION WARNING FOR THE SAFETY-RELATED COMPONENT. WARNING BE CAREFUL ELECTRIC SHOCK ! • There are some special components used in LCD monitor that are important for safety. These parts are • If you want to replace with the new backlight (CCFL) or marked on the schematic diagram and the inverter circuit, must disconnect the AC adapter...

  • Page 4: Total Amount Of Dark Dot

    SERVICING PRECAUTIONS CAUTION: Before servicing receivers covered by this 9. Use with this receiver only the test fixtures specified in service manual and its supplements and addenda, read this service manual. and follow the SAFETY PRECAUTIONS on page 3 of this CAUTION: Do not connect the test fixture ground strap publication.

  • Page 5: Total Amount Of Dot Defects

    General Soldering Guidelines Replacement 1. Use a grounded-tip, low-wattage soldering iron and 1. Carefully insert the replacement IC in the circuit board. appropriate tip size and shape that will maintain tip 2. Carefully bend each IC lead against the circuit foil pad and solder it.
  • Page 6 Circuit Board Foil Repair At Other Connections Excessive heat applied to the copper foil of any printed Use the following technique to repair the defective copper circuit board will weaken the adhesive that bonds the foil pattern at connections other than IC Pins. This technique to the circuit board causing the foil to separate from or involves the installation of a jumper wire on the "lift-off"...

  • Page 7: Timing Chart

    TIMING CHART VIDEO SYNC << Dot Clock (MHz), Horizontal Frequency (kHz), Vertical Frequency (Hz), Horizontal etc... (µs), Vertical etc... (ms) >> Total Period Video Active Time Front Porch Sync Duration Back Porch Sync Mode Resolution Frequency Clock Sort Polarity – 31.468 720x400 28.321...

  • Page 8: Disassembly

    DISASSEMBLY REAR CABINET REMOVEL. 1) Remove the screws. 2) Please lift central inside edge of Cabinet upward with fingertip then latch will be departed. (This time take care so that do not give damage on the module surface.) 3) Progress to left and lifts cabinet furtively and extracts 4) Progress to right and extracts cabinet side latch by latch.

  • Page 9: Block Diagram

    BLOCK DIAGRAM Panel S-video Composite D-Sub DVI-D - 9 -...

  • Page 10: Description Of Block Diagram

    DESCRIPTION OF BLOCK DIAGRAM 1. Video Controller Part & Display Data Transmitter Part. This part amplifies the level of video signal for the digital conversion and converts from the analog video signal to the digital video signal using a pixel clock. The pixel clock for each mode is generated by the PLL.

  • Page 11: Signal (Refer To The Timing Chart)

    50 ~ 60Hz 100KHz HVDC INPUT RECTIFIER SWITCHING OUTPUT RECTIFIER COMPONENTS AND FILTER TRANSFORMER AND FILTER LINE 100 ~ 240V SIGNAL PWM CONTROL PHOTO -COUPLER COLLENT- CIRCUIT ISOLATION PRIMARY SECONDARY High Voltage INVERTER CIRCUIT Operation description_Power 1. EMI components. This part contains of EMI components to comply with global marketing EMI standards like FCC,VCCI CISPR, the circuit included a line-filter, across line capacitor and of course the primary protection fuse.

  • Page 12: Adjustment

    ADJUSTMENT Windows EDID V1.0 User Manual Operating System: MS Windows 98, 2000, XP Port Setup: Windows 98 => Don’t need setup Windows 2000, XP => Need to Port Setup. This program is available to LCD Monitor only. 1. Port Setup 2.

  • Page 13: Service Osd

    SERVICE OSD 1) Turn off the power switch at the front side of the display. 2) Wait for about 5 seconds and press MENU, PLUS, POWER key. 3) The SVC OSD menu contains additional menus that the User OSD menu as described below. a)WB Adjust : To adjust ADC cutoff/gain.

  • Page 14: Troubleshooting Guide

    TROUBLESHOOTING GUIDE 1. NO POWER NO POWER (POWER INDICATOR OFF) CHECK POWER BOARD, AND FIND OUT A SHORT POINT CHECK J101 VOLTAGE AS OPENING PIN6, 7, 9(5V)? EACH POWER LINE CHECK CHECK 3.3V, 5V LINE U403 PIN32 Voltage (OPEN CHECK) (3.3V) ? CHECK KEY CONTROL CONNECTOR ROUTINE...
  • Page 15 2. NO RASTER (OSD IS NOT DISPLAYED) – LIPS NO RASTER (OSD IS NOT DISPLAYED) J101 PIN6, PIN7, PIN9 CHECK LIPS CHECK MICOM INV ON/OFF J101 PIN10 3.3V? PORT. 1. CONFIRM BRIGHTNESS OSD CONTRL STATE. J101 PIN12 3.3V? 2. CHECK MICOM DIM-ADJ PORT CHECK PULSE AS...
  • Page 16 3. NO RASTER (OSD IS NOT DISPLAYED) – GM1501CF NO RASTER (OSD IS NOT DISPLAYED) CHECK U608 PIN3 TROUBLE IN LIPS 3.3V? CHECK U605 TROUBLE IN LIPS PIN2 2.5V? CHECK U607 TROUBLE IN LIPS PIN2 1.8V? U402 1. CHECK G4, G3 G4, G3 SOLDERING CONDITION OSCILLATE AS...
  • Page 17 4. TROUBLE IN DPM TROUBLE IN DPM CHECK PC CHECK PC IS NOT GOING R135, R137(SYNC) ? INTO DPM OFF MODE CHECK R144(SIGNAL DETECT) TROUBLE IN SIGNAL CABLE TROUBLE IN PC Waveforms 10 R135,R137-H-SYNC R135,R137-V-SYNC - 17 -...

  • Page 18: Wiring Diagram

    WIRING DIAGRAM Connector Ass’y P/N: Connector Ass’y P/N: 6631T11020P 6631T20028G Connector Ass’y P/N: 6631T12007A CW401 CW402 J401 J101 CW405 CW406 J110 J901 J904 Connector Ass’y P/N: 6631T11017V - 18 -...
  • Page 19 - 19 -...

  • Page 20: Exploded View Parts List

    COVER, LD20FPWM STAND BODY OUTER DELL[20.1""]" 3550TKK691A COVER, LD20FPWM CABLE CLIP_DELL[20.1""]" 6850TD9007D CABLE,D-SUB, UL20276-9C(5.8MM) DT L1800,CORE POS400,,S/HEAD 1.8MM BLACK(9930) DELL 20.1 DM 6850TDU002A CABLE,D-SUB, UL2725AWG28 TWI DT L1870MM BLACK(9930) USB2.0, LD20FPWM DM 6866TDV004U CABLE,DVI, UL20276(7.5MM) DT 2000MM BLACK(9930) LD20FPWM,DELL,S/HEAD DM...

  • Page 21: Replacement Parts List

    REPLACEMENT PARTS LIST CAUTION: BEFORE REPLACING ANY OF THESE COMPONENTS, READ CAREFULLY THE SAFETY PRECAUTIONS IN THIS MANUAL. * NOTE SAFETY Mark AL ALTERNATIVE PARTS DATE: 2004. 10. 05. DATE: 2004. 10. 05. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC.
  • Page 22 DATE: 2004. 10. 05. DATE: 2004. 10. 05. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C473 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP C611 0CK104CK56A 0.1UF 1608 50V 10% R/TP X7R C474 0CH3104K566 0.1UF 50V 10% X7R 2012 R/TP...
  • Page 23 0TR162309CA KSC1623 TP SAMSUNG SOT23 NP U402 0IPRPGN011C GM1501-CF(ESD ENHANCEMENT)DE Q403 0TR162309CA KSC1623 TP SAMSUNG SOT23 NP U403 0IZZTSZ525B "DELL 20.1"" LD20FPWM MICOM" RESISTORs U404 0IMMRSS040C S524A60X51(SCT0) SAMSUNG ELE U405 0IKE704200H KIA7042AP TO-92 TP 4.2 VOLT U502 0IPMGSG019A LD1117S18TR STM SOT223 R/TP...
  • Page 24 DATE: 2004. 10. 05. DATE: 2004. 10. 05. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R135 0RJ4701D677 4.7K OHM 1/10 W 5% 1608 R/TP R409 0RH0000D622 0 OHM 1 / 10 W 2012 5.00% D R136 0RJ4701D677 4.7K OHM 1/10 W 5% 1608 R/TP...
  • Page 25 DATE: 2004. 10. 05. DATE: 2004. 10. 05. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R521 0RJ1001D677 1K OHM 1/10 W 5% 1608 R/TP J601 6612TAH002A DC-001 UNITOP DC-001 2.0MM ( R522 0RJ1052D477 10.5K OHM 1/10 W 1% 1608 R/T...

  • Page 26: Schematic Diagram

    SCHEMATIC DIAGRAM 1. CONNECTOR & JACK - 26 -...
  • Page 27 2. TW9905 - 27 -...
  • Page 28 3. SCALLER(GM1601) - 28 -...
  • Page 29 4. POWER/CONNECTOR - 29 -...
  • Page 30 5. USB HUB - 30 -...
  • Page 31 6. KEY - 31 -...

  • Page 32: Usb

    7. USB - 32 -...
  • Page 33 Oct. 2004 P/NO : 3828TSO058N Printed in Korea...

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