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LG Flatron M1717TM Service Manual

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COLOR MONITOR
SERVICE MANUAL
CHASSIS NO. : LM52A
MODEL:
*(
) **Same model for Service
CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
AUTO/SET
Website:http://biz.LGservice.com
E-mail:http://www.LGEservice.com/techsup.html
M1717TM (M1717TM-BNN.AN**EF)
M1917TM (M1917TM-BNN.AX**LF)

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Summary of Contents for LG Flatron M1717TM

  • Page 1 Website:http://biz.LGservice.com E-mail:http://www.LGEservice.com/techsup.html COLOR MONITOR SERVICE MANUAL CHASSIS NO. : LM52A MODEL: M1717TM (M1717TM-BNN.AN**EF) M1917TM (M1917TM-BNN.AX**LF) ) **Same model for Service CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. AUTO/SET...

  • Page 2: Table Of Contents

    CONTENTS SPECIFICATIONS ........... 2 ADJUSTMENT ............12 PRECAUTIONS ............3 TROUBLESHOOTING GUIDE ......14 SERVICE PRECAUTIONS ........4 WIRING DIAGRAM ..........18 TIMING CHART ............7 EXPLODED VIEW...........19 DISASSEMBLY ............8 REPLACEMENT PARTS LIST .......21 BLOCK DIAGRAM ........... 9 SCHEMATIC DIAGRAM ......... 24 DESCRIPTION OF BLOCK DIAGRAM ....

  • 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: Service Precautions

    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 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 Total Video Sync Front Blanking Sync MODE H / V Frequency Period Active Duration Porch Time Resolution Polarity Clock ( E ) Time ( A ) ( D ) ( C ) ( B ) H(Pixels) 25.175 31.469 640 x 350...

  • Page 8: Disassembly

    DISASSEMBLY 1. Remove the screws. Remove the screws. 2. Disassembly Hinge Cover. Remove the screws. 1. Let the all latches are separated 2. Disassemble back cover.

  • Page 9: Block Diagram

    BLOCK DIAGRAM - 9 -...

  • Page 10: Description Of Block Diagram

    DESCRIPTION OF BLOCK DIAGRAM 1. Video Controller 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. The range of the pixel clock is from 25MHz to 135MHz.

  • Page 11: Lips Board Block Diagram

    LIPS Board Block Diagram 50 ~ 60Hz SWITCHING 100KHz HVDC INPUT RECTIFIER OUTPUT RECTIFIER TRANSFORMER COMPONENTS AND FILTER AND FILTER LINE 100 ~ 240V SIGNAL PHOTO- COLLENT- CONTROL COUPLER CIRCUIT ISOLATION PRIMARY SECONDARY High Volta ge INVERTER CIRCUIT Operation description_LIPS 1.

  • Page 12: Adjustment

    ADJUSTMENT Windows EDID V1.0 User Manual 2. EDID Read & Write 1) Run WinEDID.exe 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.

  • 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, POWER switch with 1 second interval. 3) The SVC OSD menu contains additional menus that the User OSD menu as described below. a) Auto Color : W/B balance and Automatically sets the gain and offset value.

  • Page 14: Troubleshooting Guide

    TROUBLESHOOTING GUIDE 1. NO POWER NO POWER (POWER INDICATOR OFF) CHECK POWER BOARD, CHECK J705 AND FIND OUT A SHORT VOLTAGE POINT AS OPENING EACH PIN5, 6(5V)? POWER LINE CHECK CHECK 1.8V, 3.3V, 5V LINE U203 PIN8 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) CHECK LIPS J705 PIN5, 6 CHECK MICOM INV ON/OFF J705 PIN9 PORT. 1. CONFIRM BRIGHTNESS OSD CONTRL STATE. J705 PIN11 2. CHECK MICOM DIM-ADJ PORT CHECK PULSE AS CONTACTING SCOPE...
  • Page 16 3. NO RASTER (OSD IS NOT DISPLAYED) – GM2621 NO RASTER (OSD IS NOT DISPLAYED) CHECK U503 PIN3 TROUBLE IN LIPS 3.3V? CHECK U502 TROUBLE IN LIPS PIN2 1.8V? U202 1. CHECK PIN 108,109 PIN 108,109 SOLDERING CONDITION OSCILLATE AS 2.
  • Page 17 4. TROUBLE IN DPM TROUBLE IN DPM CHECK PC CHECK PC IS NOT GOING R720, R721(SYNC) ? INTO DPM OFF MODE CHECK TROUBLE IN SIGNAL R701(SIGNAL CABLE DETECT)? TROUBLE IN PC Waveforms 8 R720 H-SYNC R721 V-SYNC - 17 -...

  • Page 18: Wiring Diagram

    WIRING DIAGRAM 6631T11012W or 6631T11020W 6631T20023A 6631900036E 6631900035C 6400GEXX01A - 18 -...

  • Page 19: Exploded View

    EXPLODED VIEW - 19 -...

  • Page 20: Exploded View Parts List

    LCD(LIQUID CRYSTAL DISPLAY), LM170E01-TLAL LG PHILPS TFT COLOR P6,645CH,250NITS,8MS,JJ TECH,LPL NJ/KUMI,PB FREE,EGI,MAGNA,S D-IC, or 6304FLP301A LCD(LIQUID CRYSTAL DISPLAY), LM170E01-TLAD LG PHILPS TFT COLOR DOT FREE OF LM170E01-TLA4 LG PHILPS TFT COLOR P6,645CH,250NITS,8MS or 6304FLP300A LCD(LIQUID CRYSTAL DISPLAY), LM170E01-TLAC LG PHILPS TFT COLOR DOT FREE OF LM170E01-TLA3 LG PHILPS TFT COLOR P5,645CH,250NITS,8MS...

  • 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: 2006. 02. 28. DATE: 2006. 02. 28. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC.
  • Page 22 DATE: 2006. 02. 28. DATE: 2006. 02. 28. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION D707 0DS226009AA KDS226 TP KEC - 80V - - 4NSE R216 0RJ1002D677 10K OHM 1/10 W 5% 1608 R/TP D708 0DS226009AA KDS226 TP KEC - 80V - - 4NSE...
  • Page 23 DATE: 2006. 02. 28. DATE: 2006. 02. 28. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R721 0RJ1001D677 1K OHM 1/10 W 5% 1608 R/TP R555 0RJ1200D677 120 OHM 1/10 W 5% 1608 R/TP R725 0RJ4701D677 4.7K OHM 1/10 W 5% 1608 R/TP...

  • Page 24: Schematic Diagram

    SCHEMATIC DIAGRAM 1. SCALER (GM2621) - 24 -...
  • Page 25 2. AUDIO - 25 -...
  • Page 26 3. POWER - 26 -...
  • Page 27 4. CONNECTOR - 27 -...
  • Page 28 Feb. 2006 P/NO : 38289S0041 Printed in Korea...

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