LG 55LH80YD-AB Service Manual
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LG 55LH80YD-AB Service Manual

LG 55LH80YD-AB Service Manual

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LCD TV

SERVICE MANUAL

CHASSIS : LB91F
MODEL : 55LH80YD
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL60020316(0906-REV00)
North/Latin America
Europe/Africa
Asia/Oceania
55LH80YD-AB
TV
AV1
AV2
COM1
COM2
RGB
1
2
3
4
WIRELESS
4
Internal Use Only
http://aic.lgservice.com
http://eic.lgservice.com
http://biz.lgservice.com
Printed in Korea

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Summary of Contents for LG 55LH80YD-AB

  • 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 TV SERVICE MANUAL CHASSIS : LB91F MODEL : 55LH80YD 55LH80YD-AB CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. COM1 COM2 WIRELESS P/NO : MFL60020316(0906-REV00) Printed in Korea...

  • Page 2: Table Of Contents

    BLOCK DIAGRAM_TV ................16 BLOCK DIAGRAM_AV BOX ..............20 EXPLODED VIEW .................. 30 SCHEMETIC DIAGRAM_TV..............31 SCHEMETIC DIAGRAM_AV BOX............40 APPENDIX_REPAIR GUIDE ............... Copyright © 2009 LG Electronics. Inc. All right reserved. - 2 - LGE Internal Use Only Only for training and service purposes...

  • Page 3: Product Safety

    An other abnormality exists that must be corrected before the receiver is returned to the customer. Copyright © 2009 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 © 2009 LG Electronics. Inc. All right reserved. - 4 - LGE Internal Use Only...
  • Page 5 CAUTION: Maintain original spacing between the replaced component and adjacent components and the circuit board to prevent excessive component temperatures. Copyright © 2009 LG Electronics. Inc. All right reserved. - 5 - LGE Internal Use Only Only for training and service purposes...

  • Page 6: Specification

    ~ 80 % Storage Environment 1) Temp : -20 ~ 60 deg 2) Humidity : ~ 85 % Copyright © 2009 LG Electronics. Inc. All right reserved. - 6 - LGE Internal Use Only Only for training and service purposes...
  • Page 7 Medium 9300K Temperature 0.291 0.293 0.295 ± 0.015 for Adjustment) 0.311 0.313 0.315 Warm 6500K 0.327 0.329 0.331 Copyright © 2009 LG Electronics. Inc. All right reserved. - 7 - LGE Internal Use Only Only for training and service purposes...
  • Page 8 33.75 60.00 HDTV 1080i 1920*1080i 33.72 59.94 HDTV 1080i 1920*1080p 56.250 HDTV 1080p 1920*1080p 67.43/67.5 59.94/60 HDTV 1080p Copyright © 2009 LG Electronics. Inc. All right reserved. - 8 - LGE Internal Use Only Only for training and service purposes...
  • Page 9 47.72 59.8 84.75 WXGA HDCP 1280* 1024 63.595 60.0 108.875 SXGA HDCP 1920* 1080 67.5 148.5 WUXGA HDCP Copyright © 2009 LG Electronics. Inc. All right reserved. - 9 - LGE Internal Use Only Only for training and service purposes...
  • Page 10 Height (W/O Packing) 454.2 276.2 With Neck W/O Neck Dimension(With Packing) Commercial Weight(W/O Packing) With Neck Weight(With Packing) Copyright © 2009 LG Electronics. Inc. All right reserved. - 10 - LGE Internal Use Only Only for training and service purposes...

  • Page 11: Adjustment Instruction

    - Factory Option setting per destination - ad 00 90 End adj. - EYE-Q Test - Ship-out mode setting (In-Stop) Copyright © 2009 LG Electronics. Inc. All right reserved. - 11 - LGE Internal Use Only Only for training and service purposes...
  • Page 12 Software Application with EEPROM and HDMI switch by MODEL NAME(HEX) NAME using 12C Line . 00 00 00 FC 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 (LG TV) All Models 4.2.3 Download method Checksum: Changeable by total EDID data.
  • Page 13 * (wb 00 20(start), wb 00 2f(end)) -> In the case of Off- set adjustment wb 00 ff : End of white balance adjustment Copyright © 2009 LG Electronics. Inc. All right reserved. - 13 - LGE Internal Use Only...
  • Page 14 - Adjust after changing to HDMI5 on the Wireless/Wired state • Media-Box - Adjust on the Wireless/Wired state that is excepted the HDMI5. Copyright © 2009 LG Electronics. Inc. All right reserved. - 14 - LGE Internal Use Only Only for training and service purposes...
  • Page 15 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 © 2009 LG Electronics. Inc. All right reserved. - 15 - LGE Internal Use Only...

  • Page 16: Block Diagram_Tv

    BLOCK DIAGRAM_TV BLOCK DIAGRAM_TV Copyright © 2009 LG Electronics. Inc. All right reserved. - 16 - LGE Internal Use Only Only for training and service purposes...
  • Page 17 BLOCK DIAGRAM_TV Copyright © 2009 LG Electronics. Inc. All right reserved. - 17 - LGE Internal Use Only Only for training and service purposes...
  • Page 18 BLOCK DIAGRAM_TV Copyright © 2009 LG Electronics. Inc. All right reserved. - 18 - LGE Internal Use Only Only for training and service purposes...
  • Page 19 BLOCK DIAGRAM_TV Copyright © 2009 LG Electronics. Inc. All right reserved. - 19 - LGE Internal Use Only Only for training and service purposes...

  • Page 20: Block Diagram_Av Box

    BLOCK DIAGRAM_AV BOX Copyright © 2009 LG Electronics. Inc. All right reserved. - 20 - LGE Internal Use Only Only for training and service purposes...
  • Page 21 BLOCK DIAGRAM_AV BOX Copyright © 2009 LG Electronics. Inc. All right reserved. - 21 - LGE Internal Use Only Only for training and service purposes...
  • Page 22 BLOCK DIAGRAM_AV BOX 92.8 18.2 P1102 P1104 IC102 TU1001 Copyright © 2009 LG Electronics. Inc. All right reserved. - 22 - LGE Internal Use Only Only for training and service purposes...
  • Page 23 BLOCK DIAGRAM_AV BOX Copyright © 2009 LG Electronics. Inc. All right reserved. - 23 - LGE Internal Use Only Only for training and service purposes...
  • Page 24 BLOCK DIAGRAM_AV BOX Copyright © 2009 LG Electronics. Inc. All right reserved. - 24 - LGE Internal Use Only Only for training and service purposes...
  • Page 25 BLOCK DIAGRAM_AV BOX Copyright © 2009 LG Electronics. Inc. All right reserved. - 25 - LGE Internal Use Only Only for training and service purposes...
  • Page 26 BLOCK DIAGRAM_AV BOX Copyright © 2009 LG Electronics. Inc. All right reserved. - 26 - LGE Internal Use Only Only for training and service purposes...
  • Page 27 BLOCK DIAGRAM_AV BOX Copyright © 2009 LG Electronics. Inc. All right reserved. - 27 - LGE Internal Use Only Only for training and service purposes...
  • Page 28 BLOCK DIAGRAM_AV BOX Copyright © 2009 LG Electronics. Inc. All right reserved. - 28 - LGE Internal Use Only Only for training and service purposes...
  • Page 29 General Purpose Input/Output; 4 mA Driving Strength GPIO_PM0/GPIO134 GPIO_PM1/GPIO135 (Not Used) (Not Used) GPIO_PM2/GPIO136 General Purpose Input/Output; 4 mA Driving Strength GPIO_PM3/GPIO137 GPIO_PM4/GPIO138 Copyright © 2009 LG Electronics. Inc. All right reserved. - 29 - LGE Internal Use Only Only for training and service purposes...

  • Page 30: Exploded View

    X-RADIATION, Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. - 30 - LGE Internal Use Only Copyright LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 31: Schemetic Diagram_Tv

    ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. IN/OUT IN/OUT Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 32 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LEE GI YOUNG HDMI Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 33 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Audio AUDIO Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 34 AN SO YOUNG ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Power Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 35 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. HONG YEON HYUK MAIN DDR2 DDR2 Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 36 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR KIM SUNG KYEONG(FRC) THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LVDS / FRC PARK SUNG WON(LVDS) Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 37 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. HONG YEON HYUK MST7323S DDR2 Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 38 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. MAIN IC MAIN_MSTAR Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 39 LIM KYOUNG RYUL ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. MICOM Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...

  • Page 40: Schemetic Diagram_Av Box

    AUS-JUNO-BOX ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Mstar Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 41 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR FLOODONE THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. DDR2 Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 42 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR FLOODONE THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. MICOM Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 43 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR HA JAE MIN THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. TUNER Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 44 090209 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. IN/OUT Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 45 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR FLOODONE THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. HDMI RX Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 46 090209 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR FLOODONE THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 47 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LVDS RX Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 48 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. HDMI TX Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 49 081226 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. POWER Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...

  • Page 51: Trouble Shooting Guide

    WIRELESS LH80 Trouble shooting Guide Trouble shooting: p2 - p6 About Wireless TV: p7 – p10 Block Diagram: p11 – p16 LCD TV Research Lab R&D 3 Dept / AJ Gr. LG ELECTRONICS INC.

  • Page 52: Trouble Shooting

    Wireless connecting osd is displayed continually ▶ Check inner HDMI cable connection - No image status ＊Focused on Wireless connection (There can be cable’s defect.) Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 53 ＊Defect block means from itself to ahead of next part. ＊Wireless TV is similar with the model using LGE3159 or LGE3369 except for wireless parts. Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 54 - Rx/Tx module’s performance is very sensitive to temperature. So, When you repair the defect, should keep up with the original assembly state. Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 55 4. Remove HDMI cable & check wireless connection. If connection is not completed, power off and on the TV & Media-Box. Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 56 IC105: HDCP IC104: NVRAM IC101: NVRAM IC502: HDMI S/W EDID IC300: HDMI5 EDID Blue: USB upgrade Total download files are under 6ea Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 57 DTC30LM36 + SIL9125 + SB9111 + LGE3369 + Component SIL9134 SB9120 + SB9121 + LGE7329 HDMI SB9110 SIL9134 MEDIA-BOX TV SET Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 58 RX Module HDMI Cable SIL9134 To TV Main b/d SB9121 SB9111 PIC32MX [B/B] [RF] [MICOM] TV SET Media-Box TX module RX module Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 59 About Wireless TV WIRELESS LH80 Top view of RF IC (Antenna) SB9110 SB9111 Unused Unused HRP Channel LRP Channel = 60.48㎓ c(HRP) Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 60 After pairing, Antenna search and set the wireless path by LRP and then send video & audio data to HRP channel. Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 61 1.8V_L X900 [SiI9134] X-tal(24㎒) MICOM 3.3V_L Network Processor [PIC32] 2.5V_L [SB9121] 1.0V_L 2.5V_L 1.5V_L Transceiver 1.2V_L [SB9111] 1.0V_L Wireless RX Module Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...

  • Page 62: Block Diagram

    DGB_TX/RX RS-232C (MAX3232CDR) HDMI HDMI TMDS[0:7] SPDIF_OUT 1/2/3/4R 4:1 Switch ear : 3 HDMI_CEC (TDA9996) Front :1 SPDIF 5V_HDMI HDMI In Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 63 CEC_TX DDC_RGB [WT61P8S] (x4) HDMI Switch 2.5V_L (4-to-1) 1.5V_L 3.3V_2 Transceiver [TDA9996] 1.2V_L 1.8V_1 [SB9110] 1.0V_L I2C_CH2 BACK Wireless TX Module Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 64 HDMI MiCOM [WT61P8S] (x4) HDMI 2.5V_L Switch 1.5V_L (4-to-1) Transceiver 1.2V_L 3.3V_2 [SB9110] [TDA9996] 1.8V_1 1.0V_L I2C_CH2 BACK Wireless TX Module Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 65 SPI Bus(4line) Control HDMI_INT 3.3V & SiBEAM_INT 2.5V MX1605 Power Serial Flash 1.5V CABLE HDMI_RST# (12p) 1.2V SiBEAM_RST# 1.0V Power Source (5V) Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 66 Embedded (8p) I2C(2line) SPI Bus 3.3V RST# MX1605 2.5V Serial Flash Power Micom 1.5V RST# I2C(2line) (PIC32MX340F256H) Source 1.2V (5V) 1.0V Copyright ⓒ 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...

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