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LG Flatron L245WP Service Manual
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LG Flatron L245WP Service Manual

Lg flatron l245wp(l245wp-bnq.a**bqf) color monitor service manual
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COLOR MONITOR

SERVICE MANUAL

CHASSIS NO. : LM62D
MODEL:
(
) **Same model for Service
CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
Website:http://biz.LGservice.com
L245WP(L245WP-BNQ.A**BQF)

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Summary of Contents for LG Flatron L245WP

  • Page 1: Color Monitor

    Website:http://biz.LGservice.com COLOR MONITOR SERVICE MANUAL CHASSIS NO. : LM62D MODEL: L245WP(L245WP-BNQ.A**BQF) ) **Same model for Service CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

  • Page 2: Table Of Contents

    CONTENTS SPECIFICATIONS ........... 2 TROUBLESHOOTING GUIDE ......15 PRECAUTIONS ............4 WIRING DIAGRAM ..........21 TIMING CHART ............8 EXPLODED VIEW...........22 DISASSEMBLY ............9 REPLACEMENT PARTS LIST .......24 BLOCK DIAGRAM ..........10 SCHEMATIC DIAGRAM ......... 31 ADJUSTMENT ............13 SPECIFICATIONS 1.

  • Page 3: Signal Connector Pin Assignment

    Signal Connector Pin Assignment • DVI-D Connector (Digital) Signal (DVI-D) Signal (DVI-D) T. M. D. S. Data2- Hot Plug Detect T. M. D. S. Data0- T. M. D. S. Data2+ T. M. D. S. Data2/4 Shield T. M. D. S. Data0+ T.

  • Page 4: 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 5: Servicing 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 6 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 7 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 8: Timing Chart

    TIMING CHART VIDEO SYNC * PC INPUT - 8 -...

  • Page 9: Disassembly

    DISASSEMBLY 1. Remove the screws. Thumb screw by turning it counterclockwise as shown. 2. Disassembly Stand. Open the Cabinet latch. 1. Open the Back cover latch. 2. Disassemble Back cover. - 9 -...

  • Page 10: Block Diagram

    BLOCK DIAGRAM-MAIN LVDS AC in - 10 -...
  • Page 11 BLOCK DIAGRAM-POWER - 11 -...

  • Page 12: Lips Board Block Diagram

    LIPS Board Block Diagram 50 ~ 60Hz 100KHz HVDC ENERGY OUTPUT RECTIFIER INPUT RECTIFIER COMPONENTS TRANSFER AND FILTER AND FILTER LINE 100 ~ 240V SIGNAL PHOTO- Collection COUPLER CONTROL ISOLATION CIRCUIT Feedback PRIMARY SECONDARY 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 13: 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 => Doesn’t need setup Windows 2000, XP => Need to Port Setup. This program is available for LCD Monitor only. 1.

  • Page 14: Service Osd

    SERVICE OSD 1) Turn off the power switch at the right side of the display. 2) Wait for about 5 seconds and press MENU, POWER switch for 1 second interval. 3) The SVC OSD menu contains additional menus that the User OSD menu as described below. a) NVRAM INITIAL : To make shipping state.

  • Page 15: Troubleshooting Guide

    TROUBLESHOOTING GUIDE 1. NO POWER NO POWER (POWER INDICATOR OFF) CHECK POWER BOARD, CHECK J104 AND FIND OUT A SHORT VOLTAGE POINT AS OPENING PIN12,13,14 (5V)? EACH POWER LINE IS U401 PIN2(2.5V) CHECK IS U412 PIN2(2.5V) U401(2.5V),U412(2.5) U403,U404 PIN2(3.3V) U406(1.8V) LINE U406 PIN2(1.8V) CHECK IC501 PIN G4,G3 CHECK CRYSTAL(U204)
  • Page 16 2. NO RASTER (OSD IS NOT DISPLAYED) – LIPS NO RASTER (OSD IS NOT DISPLAYED) CHECK J104 CHECK POWER BOARD VOLTAGE (LIPS) PIN12,13,14 (5V)? CHECK U204 INVERTER J104 PIN1 3.3V? ON/OFF PORT 1. CONFIRM BRIGHTNESS OSD CONTRL STATUS 2. CHECK SCALER DIM-ADJ CHECK J104 PORT PIN 2...
  • Page 17 3. NO RASTER (OSD IS NOT DISPLAYED) - MAIN NO RASTER (OSD IS NOT DISPLAYED) CHECK U401 PIN2(2.5V) CHECK U406(1.8V), U412 PIN2(2.5V) U401(3.3V) U403,U404 PIN2(3.3V) U406 PIN2(1.8V) 1. CHECK PIN G3,G4 U204 SOLDERING CONDITION PIN G3,G4 2. CHECK X201 14.3MHZ? 3.
  • Page 18 4. TROUBLE IN DPM TROUBLE IN DPM CHECK PC CHECK R120 AND PC IS GOING R122, SYNC INTO DPM MODE APPEARED? CHECK U204 X201 CHECK H/V SYNC LINE SYNC PULSE TROUBLE IN IC501 Waveforms 1 H-SYNC 2 V-SYNC - 18 -...
  • Page 19 5. HDMI NO VIDEO HDMI NO VIDEO CHECK 5VR & HDMI ON CHECK U411 PIN2 SIGNAL (5V) CHECK U402,U405 EACH CHECK U402 & U405 (3.3V&1.8V) CHECK R662,R663 THERE CHECK DATA LINE ARE NO SYNC CHECK DVD PLAYER CHECK CONNECTION OR Q601 HOT PLUG AND DDC DETECTION IS HIGH...
  • Page 20 6. COMPONENT NO VIDEO COMPONENT NO VIDEO CHECK 5VS & VIDEO ON CHECK U409 PIN2 SIGNAL (5V) CHECK CHECK U407 U407 PIN 3 (3.3VA) CHECK R347,349 THERE CHECK DATA LINE ARE NO SYNC CHECK DVD PLAYER CONNECTION OR Q601 CHECK COMPONENT AND DDC Y OK? COMMUICATION LINE...

  • Page 21: Wiring Diagram

    WIRING DIAGRAM EAD32744101 6631T20038H EAD31342002 6631900047C EAD30368603 6631V12031F - 21 -...

  • Page 22: Exploded View

    EXPLODED VIEW - 22 -...

  • Page 23: Exploded View Parts List

    EXPLODED VIEW PARTS LIST * Note: Safety mark Ref. No. Part No. Description ACQ30305203 Cover Assembly, L245WP LM62D 24" CABINET ASSY, NEW ACQ30305204 Cover Assembly, L245WP LM62D 24" CABINET ASSY "C"- C/SKD (NEW) EAJ35402001 LCD,Module-TFT, M240UW01-V0 DRIVER 24INCH 1920X1200 500CD COLOR 72% 16/9 1000:1 anti-glare, 16ms(on/off), 6ms(GTG), 178/178 AU OPTRONICS CORP. ACQ30305506 Cover Assembly, L246WP LM62D 24"...

  • Page 24: 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: 2007. 02. 07. DATE: 2007. 02. 07. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC.
  • Page 25 DATE: 2007. 02. 07. DATE: 2007. 02. 07. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C328 0CK103CK56A 0603B103K500CT 10nF 10% 50V C427 0CE226WF6DC MVK5.0TP16VC22M 22uF 20% 16V C329 0CK103CK56A 0603B103K500CT 10nF 10% 50V C428 0CK104CK56A...
  • Page 26 DATE: 2007. 02. 07. DATE: 2007. 02. 07. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION DIODEs C604 0CK104CK56A 0603B104K500CT 100nF 10% 50V C605 0CK104CK56A 0603B104K500CT 100nF 10% 50V D101 0DS226009AA KDS226 1.2V 85V 300MA 2A 4NS C606...
  • Page 27 DATE: 2007. 02. 07. DATE: 2007. 02. 07. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION U602 0IPRPPH041A UDA1334BTS 1.8VTO3.6V 44.1KH R112 0RJ4701D677 MCR03EZPJ472 4.7KOHM 5% 1/10 U603 0IPRP00735B ANX9011L 3.0TO3.6 60u 25MHZ R113 0RJ4701D677 MCR03EZPJ472 4.7KOHM 5% 1/10...
  • Page 28 DATE: 2007. 02. 07. DATE: 2007. 02. 07. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R227 0RJ1000D677 MCR03EZPJ101 100OHM 5% 1/10W R312 0RJ4700D677 MCR03EZPJ471 470OHM 5% 1/10W R228 0RJ0562D677 MCR03EZPJ560 56OHM 5% 1/10W R313 0RJ0000D677...
  • Page 29 DATE: 2007. 02. 07. DATE: 2007. 02. 07. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R429 0RJ5600D677 MCR03EZPJ561 560OHM 5% 1/10W R649 0RJ4701D677 MCR03EZPJ472 4.7KOHM 5% 1/10 R501 0RJ0000D677 MCR03EZPJ000 0OHM 5% 1/10W 1 R650 0RJ1000D677...
  • Page 30 DATE: 2007. 02. 07. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION CONTROL BOARD 6602T12005C 12505WR-04A00 4P 1.25MM 1R A SW901 6600R00004C JTP1127WEM 1C1P 15VDC 0.05A SW902 6600R00004C JTP1127WEM 1C1P 15VDC 0.05A SW903 6600R00004C JTP1127WEM 1C1P 15VDC 0.05A SW904 6600R00004C JTP1127WEM 1C1P 15VDC 0.05A SW905...

  • Page 31: Schematic Diagram

    SCHEMATIC DIAGRAM 1. CONNECTORS & JACKS - 31 -...
  • Page 32 2. SCALER - 32 -...
  • Page 33 3. COMP INPUT & A/D CONVERTER - 33 -...
  • Page 34 4. POWER CONNECTION - 34 -...
  • Page 35 5. USB - 35 -...
  • Page 36 6. HDMI - 36 -...
  • Page 37 7. CONTROL - 37 -...
  • Page 38 Feb. 2007 P/NO : MFL36713637 Printed in Korea...

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