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LG M227WDP Service Manual

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LCD MONITOR TV

SERVICE MANUAL

CHASSIS : LD93C
MODEL : M227WDP
M237WDP
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
North/Latin America
Europe/Africa
Asia/Oceania
M227WDP-PZL
M237WDP-PZL
Internal Use Only
http://aic.lgservice.com
http://eic.lgservice.com
http://biz.lgservice.com

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  Summary of Contents for LG M227WDP

  • Page 1: Service Manual

    Internal Use Only North/Latin America http://aic.lgservice.com Europe/Africa http://eic.lgservice.com Asia/Oceania http://biz.lgservice.com LCD MONITOR TV SERVICE MANUAL CHASSIS : LD93C MODEL : M227WDP M227WDP-PZL M237WDP M237WDP-PZL CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
  • Page 2: Table Of Contents

    PRODUCT SAFETY ..................3 SPECIFICATION ..................6 ADJUSTMENT INSTRUCTION ...............18 TROUBLE SHOOTING ................22 BLOCK DIAGRAM...................30 EXPLODED VIEW .................. 31 SVC. SHEET ....................- 2 - Copyright LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 3: Product Safety

    CAUTION Please use only a plastic screwdriver to protect yourself from shock hazard during service operation. Copyright LG Electronics. Inc. All right reserved. - 3 - LGE Internal Use Only Only for training and service purposes...
  • Page 4: Servicing Precautions

    Alternatively, obtain and wear a commercially available discharging wrist strap device, which should be removed to prevent potential shock reasons prior to applying power to the Copyright LG Electronics. Inc. All right reserved. - 4 - LGE Internal Use Only Only for training and service purposes...
  • Page 5 CAUTION: Maintain original spacing between the replaced component and adjacent components and the circuit board to prevent excessive component temperatures. Copyright LG Electronics. Inc. All right reserved. - 5 - LGE Internal Use Only Only for training and service purposes...
  • Page 6: Specification

    BOM . 2.5 The receiver must be operated for about 5 minutes prior to the adjustment. 4. Module Specification 4.1 M227WDP-PZL : LGD,LM215WF-TLA1( P/N : EAJ60156901 / P6) Item Specification Unit Remark...
  • Page 7 4.2 M227WDP-PZL : AUO / M215HW01-V0( P/N : EAJ55729601) Item Specification Unit Remark Type TFT Color LCD Module Diagonal Size 21.53 inches(546.86mm) diagonal Active Display area 476.64(H) 268.11(V) Outline Dimension 495.6(H) x 292.2(V) x16.35(D) Typ. (Without Inverter) Aspect Ratio 16:9...
  • Page 8 Antenna, AV1, AV2, Component, RGB, DVI, HDMI USB (1EA) Picture, Music Software Update + Picture + Music RS-232C (1EA) Commercial Mode Copyright LG Electronics. Inc. All right reserved. - 8 - LGE Internal Use Only Only for training and service purposes...
  • Page 9 Humidity : 20 % ~ 80 % Storage Environment Temp : -10°C~60°C non condensing Humidity : 5 % ~ 90 % non condensing Copyright LG Electronics. Inc. All right reserved. - 9 - LGE Internal Use Only Only for training and service purposes...
  • Page 10 6. Chroma & Brightness 6.1 M227WDP – AUO Module (for more details, refer to the module spec.) Item Specification Min. Typ. Max. Remark Viewing Angle[CR>10] Horizontal CR >10 Vertical Luminance Luminance (cd/m2) Variation(%) Contrst Ratio 1000 Full white/Full black Color Coordinates [CIE1931] White 0.313...
  • Page 11 C: Interval between top of active area and bezel D: Interval between bottom of active area and bezel Active Area Bezel Copyright LG Electronics. Inc. All right reserved. - 11 - LGE Internal Use Only Only for training and service purposes...
  • Page 12 HDTV 1080I 50Hz, 1920*1080 56.25 148.5 HDTV 1080P 1920*1080 67.432 59.94 148.350 HDTV 1080P 1920*1080 67.5 60.00 148.5 HDTV 1080P Copyright LG Electronics. Inc. All right reserved. - 12 - LGE Internal Use Only Only for training and service purposes...
  • Page 13 60.0 162.0 1920*1080 66.587 59.934 138.5 10. RGB EDID Data 10.1 M227WDP(Product ID : 22388) 10.2 M237WDP(Product ID : 22391) Copyright LG Electronics. Inc. All right reserved. - 13 - LGE Internal Use Only Only for training and service purposes...
  • Page 14 60.0 162.0 1920*1080 66.587 59.934 138.5 12. DVI EDID Data 12.1 M227WDP(Product ID : 22389) 12.2 M237WDP(Product ID : 22392) Copyright LG Electronics. Inc. All right reserved. - 14 - LGE Internal Use Only Only for training and service purposes...
  • Page 15 1920*1080 67.43 / 67.5 59.94 / 60 148.35/148.50 HDTV 1080P 14. HDMI1/2 EDID Data 14.1 M227WDP (Product ID : 22390) Copyright LG Electronics. Inc. All right reserved. - 15 - LGE Internal Use Only Only for training and service purposes...
  • Page 16 14.2 M237WDP (Product ID : 22393) Copyright LG Electronics. Inc. All right reserved. - 16 - LGE Internal Use Only Only for training and service purposes...
  • Page 17 Swivel Force *Appearance Gap spec Appearance General Refer to Standard of LG(55)G1-1020 Front: 0.5 mm Back & Bottom : 1.0 m Copyright LG Electronics. Inc. All right reserved. - 17 - LGE Internal Use Only Only for training and service purposes...
  • Page 18: Adjustment Instruction

    If display "Can’t ", Check connect computer, jig, and set. Please Check the Speed : To use speed between from 200KHz to 400KHz Copyright LG Electronics. Inc. All right reserved. - 18 - LGE Internal Use Only Only for training and service purposes...
  • Page 19 2. Select "Tool Option 1" and Push "OK" button 3. Punch in the number. (Each model has their number.) 4. Completed selecting Tool option Copyright LG Electronics. Inc. All right reserved. - 19 - LGE Internal Use Only Only for training and service purposes...
  • Page 20 5. DVI (PC : 1920x1080 @ 60Hz) 6. HDMI 6. PC Audio In * Display and Sound check is executed by Remote controller. Copyright LG Electronics. Inc. All right reserved. - 20 - LGE Internal Use Only Only for training and service purposes...
  • Page 21 - Write EDID DATA to EEPROM(24C02) by using DDC2B protocol. - Check whether written EDID data is correct or not Copyright LG Electronics. Inc. All right reserved. - 21 - LGE Internal Use Only Only for training and service purposes...
  • Page 22: Troubleshooting

    Check IC1107 Output Recheck Voltage Level (5V) Check X101 Clock Replace X101 12MHz Replace IC 105 Flash Memory Wave form of X101 Copyright LG Electronics. Inc. All right reserved. - 22 - LGE Internal Use Only Only for training and service purposes...
  • Page 23 #13, #14, #25, #26 Check LVDS Cable for damage or open Replace Cable conductors. Check LCD Module Control board (Refer to Module CAS) Copyright LG Electronics. Inc. All right reserved. - 23 - LGE Internal Use Only Only for training and service purposes...
  • Page 24 Place IC100 has problems #13, #14, #25, #26 Check LCD Module Control board Refer to Module CAS Wave form of X500 Copyright LG Electronics. Inc. All right reserved. - 24 - LGE Internal Use Only Only for training and service purposes...
  • Page 25 Wave form of Comp Pb Wave form of Comp Pr Wave form of C123 Wave form of C121 Wave form of C122 Copyright LG Electronics. Inc. All right reserved. - 25 - LGE Internal Use Only Only for training and service purposes...
  • Page 26 Wave form of R730(Vsync) Wave form of R729(Hsync) Wave form of R158/ C115 Wave form of R160/ C117 Wave form of R162/ C119 Copyright LG Electronics. Inc. All right reserved. - 26 - LGE Internal Use Only Only for training and service purposes...
  • Page 27 C137, C134, C135 C137, C134, C135 IC101 has problem Wave form of R611(CVBS) Wave form of R625(S-video) Wave form of R626(S-video) Copyright LG Electronics. Inc. All right reserved. - 27 - LGE Internal Use Only Only for training and service purposes...
  • Page 28 Check EDID NVRAM(IC902, IC903) Replace IC901/ IC902 Power 12C Signal(#5, #6) Check HDCP Key NVRAM(IC102) Replace IC102 Power 12C Signal(#5, #6) Replace Mstar(IC100) Copyright LG Electronics. Inc. All right reserved. - 28 - LGE Internal Use Only Only for training and service purposes...
  • Page 29 8. All Source Audio Trouble Shooting Copyright LG Electronics. Inc. All right reserved. - 29 - LGE Internal Use Only Only for training and service purposes...
  • Page 30: Block Diagram

    BLOCK DIAGRAM PCM_DATA PCM_CD_ON TS_Parallel TS_Serial PCM_ADD Composite Composite SCART SCART Component Component Copyright LG Electronics. Inc. All right reserved. - 30 - LGE Internal Use Only Only for training and service purposes...
  • Page 31: Exploded View

    X-RADIATION, Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. Copyright LG Electronics. Inc. All right reserved. - 31 - LGE Internal Use Only Only for training and service purposes...
  • Page 32 Copyright @2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 33 Copyright @2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 34 Copyright @2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 35 Copyright @2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 36 Copyright @2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 37 Copyright @2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 38 Copyright @2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 39 Copyright @2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 40 Copyright @2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 41 Copyright @2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 42 Copyright @2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 43 Copyright @2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 44 Copyright @2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 45 Copyright @2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 46 Copyright @2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 47 Sep., 2009 P/NO : MFL49414532 Printed in Korea...

This manual is also suitable for:

M237wdpM227wdp-pzlM237wdp-pzl