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LG FLATRON M198WA Service Manual

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COLOR MONITOR
SERVICE MANUAL
CHASSIS NO. : LP69G
MODEL:
*(
) **Same model for Service
CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
Website:http://biz.LGservice.com
M198WA (M198WA-BZH.A**QLP)

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  • Page 1 Website:http://biz.LGservice.com COLOR MONITOR SERVICE MANUAL CHASSIS NO. : LP69G MODEL: M198WA (M198WA-BZH.A**QLP) ) **Same model for Service CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
  • Page 2: Table Of Contents

    CONTENTS CONTENTS ....................2 PRECAUTION ...................3 SPECIFICATION ..................7 DISASSEMBLY ..................13 ADJUSTMENT ..................15 SERVICE OSD ..................21 TROUBLE SHOOTING ................22 BLOCK DIAGRAM...................28 EXPLODED VIEW ...................31 REPLACEMENT PARTS LIST ............... 33 SVC. SHEET ....................- 2 -...
  • Page 3: Precaution

    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: 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 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: Specification

    SPECIFICATION NOTE : Specifications and others are subject to change without notice for improvement. 1. Application range 3. Test method This specification is applied to 19” Wide Monitor TV used LP69G chassis. 3.1 Performance : LGE test method followed 3.2 Demanded other specification 2.
  • Page 8 4.1.2 RGB/DVI Item Specification Remark Supported Sync. Type Separate Sync., Digital Operating Frequency Analog Horizontal 28 ~ 83kHz Vertical 56 ~ 75 Hz Digital Horizontal 28 ~ 83kHz Vertical 56 ~ 75 Hz Resolution Analog Max. 1440 x 900 @ 75Hz Recommend 1440 x 900 @ 60Hz Digital...
  • Page 9 4-3. Optical characteristic specifications 4.3.1 Optical Characteristic Item Specification Remark Viewing Angle 85/85 <CR≥10> 80/80 Luminance Luminance RGB-PC PSM:Dynamic, CSM: 6500K (cd/m2) AV1/AV2/TV PSM:Dynamic, CSM:Cool Component White Luminance Uniformity Contrast Ratio RGB-PC/ At DFC Mode AV1/AV2/TV/ Typ. 3000:1, Min. 2400:1 Component CIE Color Coordinates WHITE...
  • Page 10 4-4. Model Specification Item Specification Remark Market Broadcasting system PAL BG/I/DK, SECAM-L/L’, SECAM BG/DK RF Input Channel : E2 ~ E12 : E21 ~ E69 CATV : S1 ~ S20 HYPER : S21~ S41 L/L’ : B, C, D FRANCE SCART Input (1EA) PAL, SECAM CVBS Input (1EA)
  • Page 11 6. RGB Input (PC) Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) 720*400 31.468 70.08 28.321 640*480 31.469 59.94 25.175 640*480 37.5 31.5 800*600 37.879 60.317 40.0 800*600 46.875 75.0 49.5 1024*768 48.363 60.0 65.0 1024*768 60.123 75.029 78.75 1152*864 67.500 75.000 108.0 1280*1024 63.981 60.02...
  • Page 12 9. DVI input (DTV) Resolution H-freq(kHz) V-freq.(kHz) Pixel clock(MHz) Proposed 720*480 31.47 59.94 27.000 480P 720*480 31.50 60.00 27.027 480P 720*576 31.25 50.00 27.000 576P 1280*720 37.5 50.00 74.250 720P 1280*720 44.96 59.94 74.176 720P 1280*720 45.00 60.00 74.250 720P 1920*1080 33.72 59.94...
  • Page 13: Disassembly

    DISASSEMBLY 1. Push down slightly to disassembly it. Push the button. 2. After push the cable management like above fig.(Downward), Disassembly the Cable management with pulling it upward. 3. Disassembly Cable Holder. Hold the stand base. Disassembly Stand base. Remove base body Like a picture. Push 2 letches Like a picture.
  • Page 14 Pull base body to separate from set during pressing 2 letches. 1. Remove the screws. 2. Disassembly Hinge Cover. # 10 Remove the screws. Disassembly back cover. # 11 Pull the connector. - 14 -...
  • Page 15: Adjustment Instruction

    ADJUSTMENT INSTRUCTION 1. Application Range This specification sheet is applied to 19"/ 20"/ 22" LCD Monitor TV which is manufactured in TV (or Monitor) Factory or is produced on the basis of this data. 2. Specification 1) The adjustment is according to the order which is designated and which must be followed, according to the plan which can be changed only on agreeing.
  • Page 16 4.3. Confirm color coordinate of AV2 (1) Set Input to AV2 (2) Input signal : CVBS, PAL @ 50Hz Full white 216/255 gray level (85 IRE, Model : 202, Pattern : 78 at MSPG925L) (3) Set PSM : Dynamic / CSM : Cool (4) Confirm whether x = 0.285±0.03, y = 0.293±0.03 or not.
  • Page 17 (5) DVI 2) DIGITAL DATA 256Byte *M198WA - Select input DVI model 112(1440*900@60hz), 64 Gray Scale pattern and whether picture is displayed or not *M208WA / M228WA - Select input DVI model 122(1680*1050@60hz), 64Gray pattern and whether picture is displayed or not. 4.7.
  • Page 18 4.11. Internal pressure Option 4(3) - Confirm whether is nomal or not when between power Default Lang (Language) board's ac block and GND is impacked on 1.5kV(dc) or Lang Chesky,Dansk,Deutsch,English 2.2kV(dc) for one second. Español,Français,Italiano, 4.12 Option data setting (SVC OSD setting) Magyar,Nederlands,Norsk, Polski,Português, (1) PAL Model...
  • Page 19: Adjustment

    5. Adjustment Command (2) Command Set 5.1. Adjustment Commands(LENGTH=84) Adjustment contents CMD(hex) ADH(hex) ADL(hex) Details EEPROM READ 0-Page 0~7F Read Adjustment Contents Description (hex) 0-Page 80~FF Read FACTORY ON Factory mode on 1-Page 0~7F Read FACTORY OFF Factory mode off 1-Page 80~FF Read EEPROM ALL INIT.
  • Page 20 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 21: Service Osd

    SERVICE OSD Description of operation BLUEBIRD3 - LP69G - Tool Option : Adjust Tool Option Version 2.04 061227 - Area Option : Adjust Area Option M198WA WXGA+ CMO-19W - Option 1 : Adjust Tuner Service Option - Option 2 : Adjust Sound Service Option - Option 3 : Adjust Local key - Option 4 : Select default language Tool Option...
  • Page 22: Trouble Shooting

    TROUBLESHOOTING GUIDE 1. NO POWER (LED INDICATOR OFF) : [A] Process Fail Check 15V or Check 15V or ST_5V of Power B/D. ST_5V of Power B/D. Pass Fail Fail Re-soldering of Change Check Output of Check short of defect part of IC100, Q307. IC1100, IC1101.
  • Page 23 2. NO RASTER : [B] Process Fail Check LED status Repeat A PROCESS. On Display Unit. Pass Fail Change Panel Link Cable Check Panel Link Cable or Module. or Module. Pass Check Inverter Fail Change Inverter Connector Connector or inverter. or Inverter.
  • Page 24 3. NO RASTER ON RGB SINGAL Repeat [A, B] process. Pass Fail Check the input/ output Check the J701. of R708, R709 Pass Check Fail Re-soldering or Change the the input/output defect part. of R128, R131, R136. Pass Re-soldering or change the Fail Check the input/output of defect part, Check the...
  • Page 25 4. No Raster on Component Signal Repeat [A, B] process. Fail Check the input/ output Check the J900. of R901. Pass Fail Re-soldering or Change the Check the input/output defect part. of R125. Pass Re-soldering or change the Fail Check the input/output of defect part, Check the IC100.
  • Page 26 5. No Raster on DVI Signal Repeat [A, B] process. Pass Re-soldering or change the X100 Fail Check the input/ output defect part, Check the of R100. X100. Pass Check input source cable and jack. 6. No Raster on AV(Scart in 7.
  • Page 27 8. No sound Fail Check the input Sourse. Change the source input. Pass Re-soldering of Change the Fail Check input/Output defect part, Check the ofIC100. X100 Pass Fail Re-soldering of Change Check the input/ output the defect part. of IC500 Pass Fail Change Speaker.
  • Page 28: Block Diagram

    BLOCK DIAGRAM - 28 -...
  • Page 29: Description Of Block Diagram

    DESCRIPTION OF BLOCK DIAGRAM 1. Power Supply Block (LIPS) This Block Generates DC Voltage (5V,15V) to Main Control system from AC Power (100-240 V, 50/60 Hz, 1.0A) 2. DC/DC Converter block DC/DC Converter convert the input 5V,15V to proper 1.8V,2.5V,3.3V,5V,10.5V for Main control system. For shooting heat trouble, we use the DC/DC converting IC 3.
  • Page 30: Lips Board Block Diagram

    LIPS Board Block Diagram 50 ~ 60Hz 100KHz HVDC ENERGY INPUT RECTIFIER OUTPUT RECTIFIER TRANSFER COMPONENTS AND FILTER AND FILTER LINE 100 ~ 240V SIGNAL PHOTO COLLENT- CONTROL -COUPLER CIRCUIT ISOLATION PRIMARY SECONDARY Operation description_LIPS 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 31: Exploded View

    EXPLODED VIEW - 31 -...
  • Page 32 Plate,Shield, PRESS SBHG 0.6T FRAME EGI M8W LAMP WIRE SHIELD (0.3T) C/SKD EBR35410101 PCB Assembly,Sub, LED & P/SW T.T LP69G M198WA/M208WA/M228WA AEUGLPX BRAND 6871TPT318G PCB Assembly,Power, PLLM-M602C POWER T.T CMO L225W 22"Wide Scaler Dimming FREQENCY CHANGE LG INNOTEK CO., LTD EBU35388001 Main Total Assembly, M198WA BRAND LP69G EBU35388012...
  • Page 33: Replacement Parts List

    REPLACEMENT PARTS LIST DATE: 2007. 04. 11. LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION ACCESSORY C1118 0CK272CK46A 0603B272J500CT 2.7nF 10% 50V X7R MFL37805903 ManualPRINTING USER - BRAND M198 C1119 0CK104CK56A 0603B104K500CT 100nF 10% 50V X7R MKJ32816602 Remote ControllerMOLD ABS 380 CL C112...
  • Page 34 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C140 0CK473CK56A C1608X7R1H473KT 47nF 10% 50V X7R C195 0CK104CK56A 0603B104K500CT 100nF 10% 50V X7R C141 0CC102CK41A C1608C0G1H102JT 1nF 5% 50V C0G - C196 0CK104CK56A 0603B104K500CT 100nF 10% 50V X7R C142 0CK473CK56A C1608X7R1H473KT 47nF 10% 50V X7R...
  • Page 35 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C516 0CE106WFKDC MVK4.0TP16VC10M 10uF 20% 16V 16M C811 0CE107WF6DC MVK6.3TP16VC100M 100uF 20% 16V 8 C517 0CK105CD56A C1608X7R1A105KT 1uF 10% 10V X7R C812 0CC220CK41A C1608C0G1H220JT 22pF 5% 50V C0G C518 0CC102CK41A C1608C0G1H102JT 1nF 5% 50V C0G -...
  • Page 36 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION ZD1009 0DZ560009GB BZT52C5V6S-(F) 5.6V 5.2TO6V 40OH IC103 0IMMRAL026C AT24C64AN-10SU-2.7 64KBIT 8192x8 ZD1010 0DZ560009GB BZT52C5V6S-(F) 5.6V 5.2TO6V 40OH IC1101 0IPMG78346A AZ1085S-ADJTR/E1 12V - - TO263 R ZD1011 0DZ560009GB BZT52C5V6S-(F) 5.6V 5.2TO6V 40OH IC1102...
  • Page 37 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION TRANSISTORs & FETs R106 0RJ1002D677 MCR03EZPJ103 10KOHM 5% 1/10W 160 Q1102 0TR387500AA "TR,Bipolar2SC3875S(ALY) NPN 5V 6" R107 0RJ4700D677 MCR03EZPJ471 470OHM 5% 1/10W 160 Q300 0TR387500AA "TR,Bipolar2SC3875S(ALY) NPN 5V 6" R108 0RH0000D622 MCR10EZHJ000 0OHM 5% 1/8W 2012 R...
  • Page 38 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R135 0RJ1000D677 MCR03EZPJ101 100OHM 5% 1/10W 160 R214 0RJ0332D677 MCR03EZPJ330 33OHM 5% 1/10W 1608 R136 0RJ0562D677 MCR03EZPJ560 56OHM 5% 1/10W 1608 R215 0RJ0332D677 MCR03EZPJ330 33OHM 5% 1/10W 1608 R137 0RJ0472D677 MCR03EZPJ470 47OHM 5% 1/10W 1608...
  • Page 39 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R4005 0RN1001F409 RN-96T1F1K00 1KOHM 1% 1/6W 3.2X1 R712 0RJ0102D677 MCR03EZPJ100 10OHM 5% 1/10W 1608 R402 0RJ1000D677 MCR03EZPJ101 100OHM 5% 1/10W 160 R713 0RJ0102D677 MCR03EZPJ100 10OHM 5% 1/10W 1608 R403 0RJ1000D677 MCR03EZPJ101 100OHM 5% 1/10W 160...
  • Page 40: Module

    LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION OTHERs R831 0RJ0000D677 MCR03EZPJ000 0OHM 5% 1/10W 1608 R833 0RJ4701D677 MCR03EZPJ472 4.7KOHM 5% 1/10W 16 MAY36479301 BoxBOX SW 508 141 410 2 COLOR M1 R834 0RJ1002D677 MCR03EZPJ103 10KOHM 5% 1/10W 160 IC2001 6712SCA232A...
  • Page 41 PRINTED CIRCUIT BOARD MAIN (TOP) - 41 -...
  • Page 42 MAIN (BOTTOM) - 42 -...
  • Page 43 CONTROL LED & P/SW - 43 -...
  • Page 44 SCHEMATIC DIAGRAM 1. MSTAR - 44 -...
  • Page 45 2. PANEL & CONNECTOR - 45 -...
  • Page 46 3. DDR - 46 -...
  • Page 47 4. AMP - 47 -...
  • Page 48 5. TUNER - 48 -...
  • Page 49 6. DSUB & DVI - 49 -...
  • Page 50 7. SCART & DAC - 50 -...
  • Page 51 8. JACK - 51 -...
  • Page 52 9. POWER - 52 -...
  • Page 53 10. CONTROL KEY - 53 -...
  • Page 54 11. IR + LED + POWER - 54 -...
  • Page 55 Apr. 2007 P/NO : MFL36713672 Printed in Korea...

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