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LG 32LX30*C Service Manual
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LG 32LX30*C Service Manual

LG 32LX30*C Service Manual

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LED TV
SERVICE MANUAL
CHASSIS : LD5CX
MODEL : 32LX30*C
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL69275401 (1508-REV00)
North/Latin America
Europe/Africa
Asia/Oceania
32LX30*C-ZA
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 32LX30*C

  • Page 1 Internal Use Only North/Latin America http://aic.lgservice.com Europe/Africa http://eic.lgservice.com Asia/Oceania http://biz.lgservice.com LED TV SERVICE MANUAL CHASSIS : LD5CX MODEL : 32LX30*C 32LX30*C-ZA CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL69275401 (1508-REV00) Printed in Korea...

  • Page 2: Table Of Contents

    ADJUSTMENT INSTRUCTION .............. 10 BLOCK DIAGRAM .................. 16 EXPLODED VIEW ................... 17 SCHEMATIC CIRCUIT DIAGRAM ........... APPENDIX TROUBLE SHOOTING GUIDE ..........APPENDIX - 2 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 3: Safety Precautions

    An other abnormality exists that must be corrected before the receiver is returned to the customer. - 3 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 4: Servicing Precautions

    - 4 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 5 1. Clip each fuse or resistor lead at top of the circuit board hollow stake. 2. Securely crimp the leads of replacement component around notch at stake top. - 5 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 6: Specification

    EUTELSAT-SESAT, ASTRA 1L/H/M/KR, ASTRA 3A/3B, BADR 4/6, ASTRA 2D, EUROBIRD 3, EUTELSAT-W7, HELLASSAT 2, EXPRESS AM1, TURKSAT 2A/3A, INTERSAT10 - 6 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 7 CI+ : Switzerland(UPC,Cablecom), Netherland(Ziggo), Germany(KDG,CWB), Finland(labwise) DVB-S CI + : Germany (Astra HD+) Antenna, AV,Component, Earphone Out (1EA) HDMI1, USB - 7 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 8 HDTV 1080P 1920*1080 26.97 23.94 74.176 HDTV 1080P 1920*1080 33.75 30.00 74.25 HDTV 1080P 1920*1080 33.71 29.97 74.176 HDTV 1080P - 8 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 9 HDTV 1080P 1920*1080 26.97 23.97 74.175 HDTV 1080P 1920*1080 33.75 30.00 74.25 HDTV 1080P 1920*1080 33.71 29.97 74.175 HDTV 1080P - 9 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 10: Adjustment Instruction

    In this case, you have to channel recover. if all channel data is cleared, you didn’t have a DTV/ ATV test on production line. - 10 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 11 ▪ Enter EDID D/L menu. ▪ Enter "START" by pushing "OK" key. <Caution> Never connect HDMI cable when EDID downloaded. - 11 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 12 Target or Model Model name MODEL NAME(HEX) X=0.271(±0.002) X=0.278 LG TV 00 00 00 FC 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 (LG TV) Cool 13,000K Y=0.270 (±0.002) Y=0.280 Color X=0.286 (±0.002) X=0.293 e.
  • Page 13 * Push the "IN STOP" key after completing the function Balance". inspection. And Mechanical Power Switch must be set “ON”. - 13 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 14 Data : Write data CS : CMD + LENGTH + ADH + ADL + Data_1 +...+ Data_n Delay : 20ms - 14 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 15 ▪ Port connection button click(1) ▪ Start CI+ Key Download, Push the (4) ▪ Check the OK or NG (5) - 15 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 16: Block Diagram

    BLOCK DIAGRAM - 16 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 17: Exploded View

    Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. - 17 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 18 150112 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR POWER THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 19 150112 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR LED_DRIVER THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 20 150112 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR USB_S1 THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 21 FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR HDMI_R1 THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 22 2014/06/13 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR MAIN3_DDR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 23 140721 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR S_FLASH THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 24 140613 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR LVDS THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 25 150112 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. PCMCI_EU LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 26 FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 27 150112 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. SCART LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 28 L14_CA_M1A 2014/05/22 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 29 2014/05/22 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR TUNER THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 30 2014/05/22 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR RS232C_MSTAR_DEBUG_4P THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 31 L15.5_CI_M1A 2015/01/12 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 32 L15.5_CI_M1A 2015/02/27 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 33 L15.5_CI_M1A ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. MAIN1_DVB LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 34 2015/01/12 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR MAIN2_DVB THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 35 FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR AMP_NTP THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 37: Trouble Shooting Guide

    TROUBLE SHOOTING GUIDE LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 38 Remote control & Local switch checking D. Function error External device recognition error E. Noise Circuit noise, mechanical noise F. Exterior error Exterior defect LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 39 Always check & record S/W Version and White Replace Main Board Re-enter White Balance value Balance value before replacing the Main Board LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 40 ☞A13 No video / Check voltage 19V Normal Replace Main No audio of Adaptor Voltage B/D or Repair parts Replace Adaptor LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 41 2. Install Booster Replace S/W Upgrade Normal Contact with signal distributor Main B/D Picture or broadcaster (Cable or Air) Normal Picture LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 42 Contact with signal S/W Upgrade Replace satellite setting distributor (match with installed ANT) or broadcaster (Cable or Air) Normal Normal Picture Picture LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 43 Compon device/ Check Test pattern device and Replace Main B/D ent, Cable cable HDMI Normal error Request repair for external device/cable LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 44 HDMI by connecting HDMI) Jig, pattern Generator, Set-top Box etc. S/W Upgrade Request repair for external device Normal Screen LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 45 Power cord was inserted properly Power LED On ※ ☞A16 Normal Check ST-BY 3.5V Voltage Replace Adaptor or Replace Main B/D LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 46 Power off by unknown status except listed case Power off by abnormal status except CPU trouble "POWEROFF_ABNORMAL1" Abnormal Power off by CPU Abnormal "POWEROFF_CPUABNORMAL" LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 47 No audio Replace Speaker Connec Screen normal from Main  or Main B/D tion Speaker Cable Insert wafer SPK Cable Normal Audio LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 48 Request repair to external Audio cable/ANT provider (In case of External Input Check and fix external device signal error) Check and fix external device LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 49 Baterry of R/C in room If R/C operate, Explain the customer Normal cause is interference Operating from light in room. Replace R/C LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 50 - Fix information information Recognition error - S/W Version Fix in Check and fix accordance HDMI external device/cable with technical Recognition error information LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 51 “Part related to nose” in the Owner’s Manual. (For models without any fix information, provide the description) LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 52 Zoom part with Module Replace module exterior damage damage Cabinet Replace cabinet damage Remote Control Replace remote control damage Stand Replace stand damage LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 53 Exchange LED driver Board (PSU) A-3/5 Defected Type caused by T-Con/ Inverter/ Module Exchange Module itself (1) A-4/5 Exchange Module itself (2) A-5/5 LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 54 Checking method in menu when there is no audio A15/16 D. Function error_ No response in remote remote control operation checking method control, key error LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 55 Established date Content Check Back Light On with Naked eye Revised date Power On -> disjoint back case -> check lighting LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 56 Established date Content Main Board to back light Voltage Revised date Measure DC Voltage applying to LED backlight from Main B/D LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 57 3. After recording the R, G, B (GAIN, Cut) value of Color Temp (Cool/Medium/Warm), re-enter the value after replacing the MAIN BOARD LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 58 Power Voltage Measuring Method Revised date HD Model : 27 ~ 30 pin FHD Model : 48 ~ 51 pin Check LVDS 12V LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 59 MENU  Press red key remote control  signal test  Select channel When the signal is strong, use the attenuator (-10dB, -15dB, -20dB etc.) LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 60 Version Checking Method Revised date Checking SW version method for remote control for adjustment Press the IN-START with the remote control for adjustment LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 61 As the part connecting to the external input, check the screen condition by signal * Jack spec. : depending on Model LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 62 Check and replace Link Cable(LVDS) and contact condition Revised date 1. Check and replace LVDS Cable 2. Check LVDS connection condition LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 63 Checking item : 1. Defective pixel 2. Residual image 3. MODULE error (ADD-BAR,SCAN BAR..) 4.Video error (Classification of MODULE or Main-B/D) LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 64 Solder defect, CNT Broken Solder defect, CNT Broken T-Con Defect, CNT Broken Abnormal Power Section Solder defect, Short/Crack Solder defect, Short/Crack LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 65 Abnormal Power Section Abnormal Power Section Solder defect, Short/Crack Abnormal Display Fuse Open, Abnormal power section Solder defect, Short/Crack Noise GRADATION GRADATION LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 66 Appendix : Exchange the Module (1) Press damage Press damage Press damage Un-repairable Cases In this case please exchange the module. Crosstalk Crosstalk LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 67 Gate TAB IC Defect Un-repairable Cases In this case please exchange the module. Horizontal Block Gate TAB IC Defect Gate TAB IC Defect LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 68 Check front Display LED Revised date ST-BY condition: Red Front LED control : Menu  Option  Standby Light  On/Off LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 69 B. Power Error, No Power Established date A12/ Content Checking Method When Power is ON Revised date Check Voltage 19V of Adaptor Power LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 70 Revised date 1. Press the IN-START button of the remote control for adjustment 2. Check the entry into adjustment item 3 LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 71 1. Press the MENU button on the remote control 2. Select the AUDIO function of the Menu 3. Select TV Speaker Check LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 72 Established date Content Checking method in menu when there is no audio Revised date Check Connection from Main B/D to Speaker LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 73 4. When checking the Pre-Amp when the power is in ON condition, it is normal when the Analog Tester needle moves slowly, and defective when it does not move at all. LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...

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