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LG 55EA8800 Service Manual

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Download this manual See also: Service Manual, Owner's Manual
OLED TV

SERVICE MANUAL

CHASSIS : EJ34D
MODEL : 55EA8800
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL67874502 (1311-REV00)
North/Latin America
Europe/Africa
Asia/Oceania
55EA8800-SC
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 55EA8800

  • 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 OLED TV SERVICE MANUAL CHASSIS : EJ34D MODEL : 55EA8800 55EA8800-SC CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL67874502 (1311-REV00) Printed in Korea...

  • Page 2: Product Safety

    PRODUCT SAFETY ................. 3 SPECIFICATION ..................6 ADJUSTMENT INSTRUCTION .............. 14 EXPLODED VIEW .................. 21 SCHEMATIC CIRCUIT DIAGRAM .............. - 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: Test Condition

    Humidity : 10 ~ 90% ALEF Temp. : 0 ~ 50 deg Humidity : 20 ~ 90% Input Voltage AC100 ~ 240V, 50/60Hz - 6 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 7 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 - 7 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 8 UDTV 2160P 3840*2160 56.25 25.00 297.00 UDTV 2160P 3840*2160 61.43 29.970 297.00 UDTV 2160P 3840*2160 67.5 30.00 297.00 UDTV 2160P - 8 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 9 148.35/148.5 Frame packing Primary(HDTV 720P) Line alternative (HDTV 720P) 44.96 / 45 59.94 / 60 148.35/148.5 Side-by-side(Full) (HDTV 720P) - 9 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 10 2D to 3D, Side by Side(Half), Top & Bottom, 1920*1080 56.250 148.5 HDTV 1080P Checker Board, Single Frame Sequential, Row Interleaving, Column Interleaving - 10 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 11 * USB, DNLA Input (3D supported mode automatically) Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Remark 1080P 33.75 Side by Side(Half), Top & Bottom, Checker Board, MPO(Photo), JPS(Photo) - 11 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 12 1920*1080 33.75 30.00 74.25 HDTV 1080P 1920*1080 67.50 60.00 148.5 HDTV 1080P 1920*1080 56.250 148.5 HDTV 1080P Others SDTV - 12 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 13 ● REMARk: 3D INPUT MODE Side by Side Top & Bottom Checkerboard Single Frame Frame Packing Line Column Sequential Interleaving Interleaving LLLLL - 13 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 14 (10) If ADC calibration is failure, after rechecking ADC pattern or condition, retry calibration (11) If ADC calibration is failure, after recheck ADC pattern or condition, retry calibration - 14 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 15 (1) Play the LAN Port Test PROGRAM. (2) Input IP set up for an inspection to Test Program - IP number: 12.12.2.2 - 15 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 16 ▪ W/B Adj. must begin as start command “wb 00 00” , and finish as end command “wb 00 ff”, and Adj. offset if need - 16 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 17 R/G/B gain to 192 (default data) and decrease the others. (3) Adjustment mode : Two modes – Medium / Warm - 17 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 18: Edid Data

    ■After enter Service Mode by pushing “ADJ” key, ■Enter EDID D/L mode. ■Enter “START” by pushing “OK” key - 18 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 19 Fig.2 Fig.3 <OK in 3D mode without 3D glasses> <NG in 3D mode without 3D glasses> - 19 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 20 - Slide Camera Up. - Camera’s Preview picture apeears on TV Set. - Slide Camera Down. <Slide Up Status> <Slide Down Status> - 20 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 21 X-RADIATION, Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. - 21 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 22 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. H13 D CHIP Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 23 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. MAIN POWER 11/05/31 Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 24 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR MAIN AUDIO/VIDEO THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 25 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. MAIN DDR Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 26 2012-10-20 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. PCMCIA Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 27 2013.03.05 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. POWER_BLOCK(OLED) Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 28 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. MICOM (RENESAS) Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 29 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. HDMI Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 30 JACK HIGH/MID 2012.10.09 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 31 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR NON_EPI(OLED) THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 32 2013.02.25 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR IR/KEY_OLED THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 33 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR USB_HUB THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 34 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR USB JACK THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 35 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. SCART GENDER Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 36 LAN_VERTICAL 2011.12.09 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 37 2012-09-12 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR ETHERNET THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 38 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR AUDIO[ST] THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 39 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR TI_AMP_FILM_SPK THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 40 SCART AUDIO AMP 2011.11.21 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 41 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 42 CI SLOT 2011.10.31 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 43 CI SLOT 2011.04.17 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 44 2012.07.10 TUNER ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 45 TU_SYMBOL 2012.09.14 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 46 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 47 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LVDS INTERFACE Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 48 11.09.29 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 50 Self-emitting display Light is supplied from BLU and goes  Better response time / contrast through many layers ratio compared to LCD Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 51 Micom for Key/IR sensing Motion assy Motion assy IR + Digital Eye Audio AMP (Max 12W) Front Spk HDMI switch (4:1) Local Key Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 52 USB 3.0 USB1(USB3.0) USB 2.0 USB2(USB2.0) USB 2.0 USB3(USB2.0) USB_CAM DDR3 DDR3 DDR3 DDR3 DDR3 DDR3 DDR3 DDR3 eMMC eMMC 4Gb×4 (1600) Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 53 DCO I2Cx1 GPIOIx16 HDMI HDMI-Rx 1.4 SPLL DPLL (1-port PHY) DDR3 Controller DDR3 Controller 3D, ARC, 4kx2k DDR3 PHY DDR3 PHY Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 54 H13 Block diagram Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 55 [S2_RESET] 31 AG5 [GPIO9] IF_P ADC_I_INP [T/C_DIF[P]] 10 FILTER U17 [ADC_I_INP] IF_N ADC_I_INN [T/C_DIF[N]] 11 V17 [ADC_I_INN] TUNER_SIF LG1154A TU_CVBS IF_AGC Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 56 Component 1 Phone JACK COMP1_Y/Pb/Pr [PB2/Y2/SOY2/PR2_IN] COMP2_PB_IN_SOC COMP2_Y_IN_SOC COMP2_Y_IN_SOC_SOY COMP2_PR_IN_SOC Tuner TU_CVBS_IN_SOC TU_CVBS_IN [CVBS_IN1] TUNER_SIF DIF[P/N] ADC_I_INP/INN [AAD_ADC_SIF] [ADC I INP/INN] Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 57 TAS5733 AMP_MUTE MICOM SIDE_HP_MUTE TUNER SIF TUNER_SIF [AAD_ADC_SIF] TPA6138A2 HP_L/ROUT_MAIN Headphone [AUDA_OUTL] HEAD PHONE [PHY0_ARC_OUT_0] [IEC958OUT] & line out SPDIF_OUT SPDIF_OUT_ARC Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 58 TMDS Link 8bits CEC_REMOTE CEC_REMOTE DDC_I2C 2bits MICOM (IC3000 / HDMI4 HDMI4 R5F100GEAFB) TMDS Link 8bits CEC_REMOTE DDC_I2C 2bits MHL_DET (IC3202 / TPS2051) Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 59 M_REMOTE_CTS / RTS [GPIO15 / GPIO18] Receiver M_REMOTE_RESET [GPIO13] LG1154D [UART0_RXD] [UART0_TXD] SOC_TX SOC_RX SOC_TX SOC_RX 4Pin debugging MICOM Wafer (R5F100GEAFB) P3800 Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 60 Interconnection - 1 55EA9800 [PCBs] Main PCB WIFI ASSY BT MOTION ASSY IR PCB Touch Key / Logo Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 61 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 ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 62 Always check & record S/W Version and White Replace Main Board Re-enter White Balance value Balance value before replacing the Main Board Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 63 Power No Video/ replace voltage? Board ( 3.5V,12V,20V No audio MAIN B/D or 24V…) Replace Power Board and repair parts Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 64 Contact with signal distributor Contact with signal distributor Normal Normal or broadcaster (Cable or Air) Picture? Normal Picture? Replace Main B/D Close Close Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 65 Request repair for external device/cable Check external External device External device device and /Cable Replace Main B/D HDMI error cable normal Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 66 (Check normal operation of Main B/D Main B/D normal? normal? External Input, Component, RGB and HDMI/DVI by connecting Jig, pattern Generator ,Set-top Box etc. Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 67 Measure voltage of each output of Power B/D Normal? Normal ※ Replace Main B/D voltage? Close Normal Check ST-BY 3.5V voltage? ☞A18 Replace Power B/D Replace Power Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 68 "POWEROFF_ABNORMAL1" Power off by abnormal status except CPU trouble Abnormal "POWEROFF_CPUABNORMAL" Power off by CPU Abnormal Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 69 Speaker off Speaker off Cancel OFF Replace Power Board and repair parts Check Replace MAIN Board Disconnection Speaker disconnection Replace Speaker Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 70 Check and fix external device Check and fix external device Check and fix external device Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 71 (Power B/D don’t have problem) If R/C operate, Normal Close Explain the customer operating? cause is interference from light in room. Replace R/C Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 72 Down load the Firmware •If you conduct the loop at 3times, change the * INSTART MENU 02.11 MR13/P. Remocon Test 3. Firmware download download Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 73 Main B/D ☞A24 Close Check & Repair Wifi cable connection ☞A4 ☞A4 Wi-Fi Mac value Close is “NG”? Change the Wifi assy Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 74 Camera B/D ☞A25 Close Check & Repair Camera cable connection ☞A4 ☞A4 Camera Ver. Close is “NG”? Change the Camera assy Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 75 S/W Version HDMI/ Check and fix DVI, Optical Replace Main B/D Fix in external device/cable Recognition error accordance with technical information Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 76 “Part related to nose” in the Owner’s l t d t ” i th O ’ provide the description) Manual. Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 77 Replace cabinet damage Remote controller controller Replace remote controller Replace remote controller damage Stand Replace stand ep ace sta d dent dent Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 78 Defected Type caused by T-Con/ Inverter/ Module Exchange Module (1) A-4/5 Exchange Module (2) Exchange Module (2) A-5/5 A 5/5 Continue to the next page Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 79 D. Function error method Wifi operation checking method Camera operation checking method Camera operation checking method E. Etc Tool option changing method Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 80 Content Content date After Remove the Rear Cover, turning on the power and disassembling the case, check with the naked eye. Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 81 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 ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 82 When the signal is strong, use the attenuator (-10dB -15dB -20dB etc ) attenuator ( 10dB, 15dB, 20dB etc.) Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 83 1. Checking method for remote controller for adjustment Version Press the IN-START with the remote controller for adjustment t ll Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 84 1. Check the signal strength or check whether the screen is normal when the external device is connected. 2. After measuring each voltage from power supply, finally replace the MAIN BOARD. pp y, Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 85 LCD TV LCD TV connection diagram (1) date As the part connecting to the external input, check the screen condition by signal Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 86 Li k C bl (EPI) diti date Check the contact condition of the Link Cable, especially dust or mis insertion. Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 87 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!) Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 88 수직 비내림 Line Dim Crosstalk Press damage Crosstalk Un-repairable Cases In this case please exchange the module. Burnt A – 1/2 Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 89 Green Noise on power on/off time Line Defect Un-repairable Cases In this case please exchange the module. Mura A – 2/2 Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 90 Front LED control : ST-BY condition: On or Off Menu Option Power ON condition: Turn Off Standby Light Standby Light ON/ Off Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 91 Check the DC 24V, 12V, 3.5V. 18 Pin (Power Board ↔ Main Board) Power on DRV ON 3.5V 3 5V 3.5V Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 92 Entry method 1. Press the IN-START button of the remote controller for adjustment 2. Check the entry into adjustment item 3 Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 93 1. Press the Setting button on the remote controller 2. Select the Sound function of the Menu 3. Select the Sound Setting 4. Select TV Speaker Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 94 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 ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 95 Analog Tester needle moves slowly and defective when it does not move at all Analog Tester needle moves slowly, and defective when it does not move at all. Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 96 Checking order 1, 2. Check Motion cable condition between Motion assy & Main board. Check the 3.3V on the terminal 2. Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 97 Checking order 1, 2. Check Wifi cable condition between Wifi assy & Main board. Check the 3.3V on the terminal 2. Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 98 Checking order 1, 2. Check Camera cable condition between Camera assy & Main board. Check the 3.5V on the terminal 2. Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 99 Changing method Contact the USB memory. (USB 1,2,3 jack) Enter the password. (ex. 000000) * Access USB Memory has each password. Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...