LG FLATRON M228WA Series Service Manual
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LG FLATRON M228WA Series Service Manual

Chassis no. : lp69g
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See also: User Manual
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
E-mail:http://www.LGEservice.com/techsup.html
M228WA (M228WA-BZH.A**QLP)

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Summary of Contents for LG FLATRON M228WA Series

  • Page 1 Website:http://biz.LGservice.com E-mail:http://www.LGEservice.com/techsup.html COLOR MONITOR SERVICE MANUAL CHASSIS NO. : LP69G MODEL: M228WA (M228WA-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 SPECIFICATIONS ........... 2 ADJUSTMENT ............17 PRECAUTIONS ............8 TROUBLESHOOTING GUIDE ......24 DISASSEMBLY ............12 EXPLODED VIEW...........30 BLOCK DIAGRAM ..........14 REPLACEMENT PARTS LIST .......32 DESCRIPTION OF BLOCK DIAGRAM....15 SCHEMATIC DIAGRAM ..........40 SPECIFICATION NOTE : Specifications and others are subject to change without notice for improvement. 1.

  • Page 3: Specifications

    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. 1680 x 1050 @ 60Hz Recommend 1680 x 1050 @ 60Hz Digital...
  • Page 4 4-3. Optical characteristic specifications 4.3.1 Optical Characteristic Item Specification Remark Viewing Angle 75/75 85/85 <CR≥10> 70/70 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 5 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 6 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 7 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 8: 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 9 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 10 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 11 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 12: 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 13 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. - 13 -...

  • Page 14: Block Diagram

    BLOCK DIAGRAM - 14 -...

  • Page 15: 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 16 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 17: 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 18 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 19 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 20 (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 21 4.11. Internal pressure *M198WA/M208WA/M228WA(Change by Suffix) Area Option 00 - Confirm whether is nomal or not when between power Item Condition Remark board's ac block and GND is impacked on 1.5kV(dc) or Option1(6) 2.2kV(dc) for one second. 200PR 0 : 200 PR Off 4.12 Option data setting (SVC OSD setting) 1 : 200 PR On (1) PAL Model...
  • Page 22 (2) Command Set 5. Adjustment Command 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 23 SERVICE OSD BLUEBIRD3 - LP69G Description of operation - Tool Option : Adjust Tool Option Version 2.01 061227 - Area Option : Adjust Area Option M228WA WSXGA CMO-22W - Option 1 : Adjust Tuner Service Option - Option 2 : Adjust Sound Service Option - Option 3 : Adjust Local key Tool Option 8066...

  • Page 24: Troubleshooting Guide

    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 25 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 26 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 27 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 28 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 29 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 30: Exploded View

    EXPLODED VIEW - 30 -...
  • Page 31 Plate,Shield, PRESS SBHG 0.6T FRAME EGI M8W LAMP WIRE SHIELD (0.3T) CKD EBR35410101 PCB Assembly,Sub, LED & P/SW T.T LP69G M198WA/M208WA/M228WA AEUGLPX BRAND 6871TPT318G PCB Assembly,Power, PLLM-M602B POWER T.T CMO L225W 22"Wide Scaler Dimming FREQENCY CHANGE LG INNOTEK CO., LTD EBU35388003 Main Total Assembly, M228WA BRAND LP69G EBR35409501 PCB Assembly,Sub, CONTROL T.T LP69G M198WA/M208WA/M228WA AEUGLPX BRAND...

  • Page 32: Replacement Parts List

    REPLACEMENT PARTS LIST DATE: 2007. 01. 16. LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION CAPACITOR C1129 0CE227WF6DC MVK8.0TP16VC220M 220uF 20% 16V 8 C1001 0CC331CK41A C1608C0G1H331JT 330pF 5% 50V C0G C1130 0CK104CK56A 0603B104K500CT 100nF 10% 50V X7R C1002 0CC331CK41A C1608C0G1H331JT 330pF 5% 50V C0G...
  • Page 33 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C156 0CK473CK56A C1608X7R1H473KT 47nF 10% 50V X7R C307 0CC101CK41A C1608C0G1H101JT 100pF 5% 50V C0G C157 0CC561CK41A C1608C0G1H561JT 560pF 5% 50V C0G C308 0CC101CK41A C1608C0G1H101JT 100pF 5% 50V C0G C158 0CK104CK56A 0603B104K500CT 100nF 10% 50V X7R...
  • Page 34 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C600 0CK103CK56A 0603B103K500CT 10nF 10% 50V X7R C823 0CC561CK41A C1608C0G1H561JT 560pF 5% 50V C0G C601 0CC390CK41A C1608C0G1H390JT 39pF 5% 50V C0G C824 0CC561CK41A C1608C0G1H561JT 560pF 5% 50V C0G C602 0CK103CK56A 0603B103K500CT 10nF 10% 50V X7R...
  • Page 35 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION D704 0DS226009AA KDS226 1.2V 85V 300MA 2A 4NSEC 1 ZD814 0DZ560009GB BZT52C5V6S-(F) 5.6V 5.2TO6V 40OH D705 0DS226009AA KDS226 1.2V 85V 300MA 2A 4NSEC 1 ZD815 0DZ560009GB BZT52C5V6S-(F) 5.6V 5.2TO6V 40OH D706 0DS226009AA...
  • Page 36 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION IC400 EAN32205201 HY5DU281622FTP-5 128MBIT 8 x 16b R1107 0RJ1002D677 MCR03EZPJ103 10KOHM 5% 1/10W 160 IC500 EAN33643401 YDA138-EZ(D-3) 9TO13.5V 7mV 0.02 R111 0RJ0472D677 MCR03EZPJ470 47OHM 5% 1/10W 1608 IC701 0IMMR00014A M24C02-RMN6TP 2KBIT 256X8BIT 1.8...
  • Page 37 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R153 0RJ1002D677 MCR03EZPJ103 10KOHM 5% 1/10W 160 R242 0RJ1001D677 MCR03EZPJ102 1KOHM 5% 1/10W 1608 R154 0RJ1202D677 MCR03EZPJ123 12KOHM 5% 1/10W 160 R243 0RJ3301D677 MCR03EZPJ332 3.3KOHM 5% 1/10W 16 R155 0RJ1000D677 MCR03EZPJ101 100OHM 5% 1/10W 160...
  • Page 38 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R515 0RJ1001D677 MCR03EZPJ102 1KOHM 5% 1/10W 1608 R803 0RJ0752D477 MCR03EZPF750 75OHM 1% 1/10W 1608 R516 0RJ1001D677 MCR03EZPJ102 1KOHM 5% 1/10W 1608 R804 0RJ0752D477 MCR03EZPF750 75OHM 1% 1/10W 1608 R518 0RJ0000D677 MCR03EZPJ000 0OHM 5% 1/10W 1608...
  • Page 39 LOC. NO. PART NO. DESCRIPTION / SPECIFICATION LOC. NO. PART NO. DESCRIPTION / SPECIFICATION TRANSISTORs Q1102 0TR387500AA 2SC3875S(ALY) NPN 5V 60V 50V 150 Q300 0TR387500AA 2SC3875S(ALY) NPN 5V 60V 50V 150 Q302 0TR150400BA 2SA1504S(ASY) PNP -5V -50V -50V Q303 0TR150400BA 2SA1504S(ASY) PNP -5V -50V -50V Q304 0TR387500AA...

  • Page 40: Schematic Diagram

    SCHEMATIC DIAGRAM 1. MSTAR - 40 -...
  • Page 41 2. PANEL & CONNECTOR - 41 -...
  • Page 42 3. DDR - 42 -...
  • Page 43 4. AMP - 43 -...
  • Page 44 5. TUNER - 44 -...
  • Page 45 6. DSUB & DVI - 45 -...
  • Page 46 7. SCART & DAC - 46 -...
  • Page 47 8. JACK - 47 -...
  • Page 48 9. POWER - 48 -...
  • Page 49 PRINTED CIRCUIT BOARD MAIN (TOP) - 49 -...
  • Page 50 MAIN (BOTTOM) - 50 -...
  • Page 51 CONTROL (BOTTOM) - 51 -...
  • Page 52 Jan. 2007 P/NO : MFL36713674 Printed in Korea...

This manual is also suitable for:

Flatron m228wa-bzh.a**qlp seriesFlatron m198wa-bzh.a**qlp seriesFlatron m208wa-bzh.a**qlp series

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