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LG 55EC9300 Repair Manual
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LG 55EC9300 Repair Manual

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Internal Use Only
OLED TV
샤 시 명 : EA42D
모 델 명 : 55EC9300/55EC9310
55EC9300-NA/55EC9310-NB
주 의 : 제품을 점검하시기 전에 이 책자의 안전수칙을 잘 읽어보시고
조작하시기 바랍니다.
P/NO : MFL68260402 (1409-REV00)
Printed in Korea

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Summary of Contents for LG 55EC9300

  • Page 1 Internal Use Only OLED TV 샤 시 명 : EA42D 모 델 명 : 55EC9300/55EC9310 55EC9300-NA/55EC9310-NB 주 의 : 제품을 점검하시기 전에 이 책자의 안전수칙을 잘 읽어보시고 조작하시기 바랍니다. P/NO : MFL68260402 (1409-REV00) Printed in Korea...
  • Page 2 차례 ................2 안전을 위한 주의사항 ............3 제품규격 ................4 조정규격 ................9 분해도 ................16 회로도 ................- 2 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 3: 안전을 위한 주의사항

    6. 어떤 지점에서도 그 전위는 0.75V를 넘지 않아야 하고 누설전류는 0.75mA를 초과해서는 안된다. AC전압계 노출된 금속부분 1000 ohm, 10W 어스 <그림> 누설전류 측정회로도(HOT CHECK) - 3 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 4: 제품규격

    AC 220~240V, 60Hz on the label (Korea) 화면 크기 55 inch Wide(1920 × 1080) 55EC9300-NA 화면 비율 16:9 튜닝 시스템 OLED 모듈 55EC9300-NA - 4 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 5 HDTV 1080P 1920*1080 26.97 23.976 74.176 HDTV 1080P 1920*1080 33.75 30.000 74.25 HDTV 1080P 1920*1080 33.71 29.97 74.176 HDTV 1080P - 5 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 6 Top & Bottom 720*480p 31.469 / 31.50 59.94 / 60.00 27.00 / 27.027 Secondary (16:9) Side by Side (Half) - 6 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 7 Side by Side, Top & Bottom Checkerboard, Single Frame Sequential, Row Interleaving, Column Interleaving (Photo : Side by Side, Top & Bottom) - 7 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 8 ※ Remark: 3D Input mode Side by Side Top & Bottom Checkerboard Single Frame Frame Packing Line Interleav- Column Inter- Sequential leaving LLLLL - 8 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 9: 조정규격

    (2) ADC 보정과 화이트 밸런스 수동조정 (3) Ship-out 모드조건, 사전 설정 CH 정보 4.2.6. 검사 - IN START 메뉴에서 다음 키를 선택합니다 - 9 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 10 ⓓ 모델 이름(Hex): LGTV Chassis MODEL NAME(HEX) EA42D 00 00 00 FC 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 ⓔ Checksum(LG TV) : 총 EDID 데이터에 의해 변경될 수 있음 ⓔ1 ⓔ2 ⓔ3 HDMI1 4.4.
  • Page 11 (모델: 217, 패턴: 49) ※ 색상 분석기 매트릭스를 보정할 때에는 CS-1000을 B Gain 사용해야 합니다. R Cut G Cut 5.1.3. 장비 연결 - 11 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 12 고정되어 있습니다. 이는 다른 채널로 변경되지 않으며, 다른 채널로 강제 변경하는 것은 비정상적 케이스일 수 있습니다. ‘PIP’ 키를 눌러 메인 디모드 모드로 돌아가 주십시오 - 12 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 13 확인합니다. (3D 안경 없는 3D 모드) *비고: Power Only 모드에서 검사하고, 마스터 장비에서 소프트웨어 버전을 확인합니다. Fig.2 <3D 안경없이 3D 모드에서 OK> - 13 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 14 5단계) Eye Q 센서에서 손을 뗀 다음 6초 정도 기다립니다. 6단계) 화면에서 "백라이트(xxx)"를 확인하고 데이터가 증가하는지 확인합니다. Eye Q 센서를 교체해야 합니다. - 14 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 15 (1) 서비스 리모컨에서 "IN-START" 키를 누릅니다. (2) "Tool Option 1"을 선택하고 “OK” 버튼을 누릅니다. (3) 해당 숫자를 누릅니다. (각 모델에는 고유한 숫자가 지정되어 있습니다.) - 15 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 16: 분해도

    X-RADIATION, Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. - 16 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 17 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR M14 Symbol A THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. M14-Peripheral Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 18 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR M14 Symbol B THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. M14-Display In/Out Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 19 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR M14 Symbol C THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. M14-AV In/Out Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 20 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR M14 DDR3-M0 THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 21 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR M14 DDR3-M1 THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 22 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR VCC & GND THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. 11/05/31 Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 23 2013.03.22 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. PCMCIA Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 24 2013.03.22 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. MICOM Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 25 2013.03.22 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. HDMI Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 26 2013.07.25 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. HDMI4 Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 27 FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR Jack_Vertical_Common THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 28 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR USB 1(DVR) THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 29 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. Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 30 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. Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 31 2012-09-12 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR ETHERNET THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 32 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR SCART AMP THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 33 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. Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 34 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. Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 35 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR B-CAS I/F THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 36 TUNER 2012.07.10 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 37 TU_SYMBOL 2012.09.14 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 38 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. Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 39 11.09.29 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 40 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. Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 41 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Vx1 LVDS INTERFACE Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 42 2013.03.22 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR POWER THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 43 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. IR / KEY Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 44 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. Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 45 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR USB 2 & 3 THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 46 FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR AUDIO[ST] THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 47 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. Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 49 OLED TV Repair Guide `14 years New Models 14 years New Models < Applicable Model > 55EC9300-UA Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 50 Overview for ’14 OLED FHD MODEL (Hardware) Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 51 MAIN SOC DDR Memory Module FFC EMMC Memory Micom for Key/IR sensing Audio AMP WIFI BT Combo Jog Key IR Color sensor Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 52 SPDIF OUT ASSY OPTIC IR / KEY/EYE ETHERNET LOGO LIGHT X_TA 25MH Sub Micom I2C 3 (RENESAS R5F1000G) X_TAL 32 768KH 32.768KHz Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 53 0x56 +3.3V_NORMAL 3.3KΩ IC3000 IC3000 Renesas MICOM I2C_SDA_MICOM_SOC 33Ω 0x52 I2C_SCL_MICOM_SOC Standard Mode(50kHz) +3.5V_ST EYE_SDA 3.3KΩ EYE_SCL 100Ω IR / KEY/EYE Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 54 3. Power Block Diagram 3. Power Block Diagram Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 55 IF N IF_N AL28 [DMD_ADC_INN] [M_DIF_N] 7 TUNER_SIF(for T2/C/S) S_SIF 9 AK29[DMD_ADC_SIF] TU_CVBS(for T2/C/S) S_CVBS 8 AL27[CVBS_IN1] IF_AGC M_DIF_IFAGC 3 AM29[IFAGC] Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 56 JK340 AV1_CVBS_SOC AV1_CVBS [AV1_CVBS_SOC] COMP1/AV1/DVI_L_IN AUAD_L_CH3_IN [AUDA_L_CH3_IN] COMP1/AV1/DVI_R_IN AUAD_R_CH3_IN [AUDA_R_CH3_IN] IC101 Tuner TU_CVBS TU_CVBS_SOC [CVBS_IN1] TUNER_SIF ADC_I_INP TUNER_SIF/IF_P/N [AAD_ADC-SIF] ADC_I_INN [DMD_ADC_INP/DMD_ADC_INN] Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 57 HP L/ROUT MAIN HP_L/ROUT_MAIN HP L/ROUT AMP HP_L/ROUT_AMP [AUDA_OUTL] HEAD PHONE TPA6138A2PWR [AUDA-OUTR] HP AMP JK3403 SPDIF_OUT [IEC9580UT] JK3401 K 4 1 Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 58 TMDS Link or MHL Link TMDS Link 8bits HDMI_HPD HDMI4 HDMI4 with MHL with MHL Q3001 5V_HDMI_4 5V_NORMAL HDMI_CEC MHL_DET X-tal RENESAS 32.768kHz MICOM Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 59 FHD 120 HZ Pin map YUV444 THCV22 HTPDN: IC101 IC101 LOCKN VBY1 Rx I2C SCA1 I2C SDA1 I2C SDA1 LGD T-CON Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 60 WIFI-BT WIFI-BT_DP EYY_SCL [USB2_0_DM0] EYE_SDA LOGO_LIGHT IR-KEY -EYE KEY2 Micom KEY1 LOGO_LIGHT LOGO IC101 WOL Power control WOL CTL IC5201 IC5201 Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 61 Interconnection - 1 55EC9300 [PCBs] Main PCB WIFI + BT Combo ASSY IR / Logo PCB Joystick Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 62 CHECK the vby1 LED and Module supply voltage date date ‘Red LED signal ‘ means video output is good Check the Module supply voltage ’24V’ Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 63 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. (Cool/Medium/Warm), re-enter the value after replacing the MAIN BOARD. Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 64 Content date date Settings Channel Manual Tuning select channel When the signal is strong, use the attenuator (-10dB, -15dB, -20dB etc.) Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 65 1. Checking method for remote controller for adjustment Version Press the IN-START with the remote ess t e t t e e ote controller for adjustment Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 66 1. Check the signal strength or check whether the screen is normal when the external device is connected. 2 Aft 2. After measuring each voltage from power supply, finally replace the MAIN BOARD. th MAIN BOARD Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 67 LCD TV connection diagram (1) date date As the part connecting to the external input, check the screen condition by signal Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 68 Check Link Cable (EPI) reconnection condition date date Check the contact condition of the Link Cable, especially dust or mis insertion. Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 69 Checking item : 1. Defective pixel 2. image stickying 3. MODULE error (ADD-BAR,SCAN BAR..) 4.Video error (Classification of MODULE or Main-B/D!) Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 70 Brightness difference Line Dim Crosstalk Press damage Crosstalk Un-repairable Cases In this case please exchange the module. Burnt A – 1/2 Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 71 Green Noise on power on/off time Line Defect Un-repairable Cases In this case please exchange the module. Mura A – 2/2 Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 72 LCD TV date Revised Check power input voltage and ST-BY 3.5V Content date date Check the DC 24V, 12V, 3.5V. Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 73 1. Press the IN-START button of the remote controller for adjustment controller for adjustment 2. Check the entry into adjustment item 3 Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 74 2. Select the Sound function of the Menu 3. Select the Sound Setting 4 Select TV Speaker 4. Select TV Speaker Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 75 ③ Connect the tester RX1 to the speaker terminal and if you hear the Chik Chik sound when you touch the GND and output terminal, the speaker is normal. Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only...
  • Page 76 ① Checking order 1, 2. Check Touch cable condition between IR & Main board. Check the st-by 3.5V on the terminal Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 77 1, 2. Check Motion cable condition between Motion assy & Main board. Check the 3 5V WOL on the terminal 2 Check the 3.5V_WOL on the terminal 2. Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 78 Check the WIFI Channel WIFI SPEED -> MAC USB2 0(PASS) (USB1 0 ->FAIL) Check the WIFI Channel , WIFI SPEED > MAC , USB2.0(PASS) (USB1.0 >FAIL) Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 79 D. Function error symptom LCD TV date Revised Content Camera operation checking method Camera operation checking method date date 55EC93 NO Camera Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 80 Circuit noise, mechanical noise F. Exterior error Exterior defect First of all, Check whether there is SVC Bulletin in GCSC System for these model. Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 81 Always check & record S/W Version and White Replace Main Board Re-enter White Balance value Balance value before replacing the Main Board Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 82 Board ( 3.5V,12V,20V No audio No audio MAIN B/D MAIN B/D or 24V…) Replace Power Board and repair parts Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 83 S/W Upgrade Contact with signal distributor Normal Picture? or broadcaster (Cable or Air) Normal Picture? Replace Replace Main B/D Close Close Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 84 Request repair for external device/cable Check external External device device and Replace Main B/D HDMI /Cable cable error normal Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 85 (Check normal operation of normal? Main B/D External Input, Component, RGB and HDMI/DVI by connecting Jig, pattern Generator ,Set-top Box etc. Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 86 Normal ※ Replace Main B/D voltage? Close Normal Check ST-BY 3.5V voltage? ☞A18 Replace Power B/D Replace Power B/D Replace Power Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 87 Power off by unknown status except listed case "POWEROFF_ABNORMAL1" Power off by abnormal status except CPU trouble Abnormal "POWEROFF_CPUABNORMAL" Power off by CPU Abnormal Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 88 Speaker off Cancel OFF Replace Power Board and repair parts Check Disconnection Replace MAIN Board Speaker disconnection Replace Speaker Replace Speaker Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 89 Connect and check Normal External Input other external audio? signal error) device Check and fix external device Check and fix external device Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 90 If R/C operate, Normal Close Explain the customer operating? cause is interference cause is interference from light in room. Replace R/C Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 91 •If you conduct the loop at 3times, change the * INSTART MENU 02.11 MR13/P. Remocon Test 3 Firmware Remocon Test 3. Firmware download Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 92 Main B/D ☞A24 ☞A24 Close Check & Repair Wifi cable connection ☞A4 Wi-Fi Mac value Close is “NG”? Change the Wifi assy Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 93 Camera B/D ☞A25 ☞A25 Close Check & Repair Camera cable connection ☞A4 Camera Ver. Close is “NG”? Change the Camera assy Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 94 - S/W Version HDMI/ HDMI/ Check and fix DVI, Optical Replace Main B/D Fix in external device/cable Recognition error accordance with technical information Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 95 ※ Describe the basis of the description (For models without any fix information, in “Part related to nose” in the Owner’s provide the description) Manual. Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 96 Zoom part with Module Replace module exterior damage damage Cabinet Replace cabinet damage Remote controller Replace remote controller damage Stand Replace stand dent Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 97 A-3/5 Inverter/ Module Exchange Module (1) M d l A 4/5 A-4/5 Exchange Module (2) A-5/5 Continue to the next page Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 98 D. Function error method Wifi operation checking method Wifi operation checking method Camera operation checking method E. Etc Tool option changing method Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

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