LG OLED77W7P Page 55 Service Manual Download

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Contents of Standard Repair Process Detail Technical Manual

No.

Error symptom

Content

Page

Remarks

B. Power error_ No power

Check front display Logo

Check power input Voltage & ST-BY 3.5V

B. Power error_Off when on, off
while viewing

POWER OFF MODE checking method

A10

C. Audio error_ No audio/Normal
video

Checking method in menu when there is
no audio

A11

Voltage and speaker checking method
when there is no audio

A12

D. Function error

Remote control operation checking
method

A13

Motion Remote operation checking
method

A14

Abnormal Case

A15

Only for training and service purposes.

Summary of Contents for OLED77W7P

Page 1: ...er electronic means publication modification copying or transmission of this Service Manual is STRICTLY PROHIBITED unless you have obtained the prior written consent of the LG Electronics entity from which you received this Service Manual The material covered by this prohibition includes without limitation any text graphics or logos in this Service Manual CONFIDENTIAL Copyright 2017 LG Electronics...

Page 2: ...ts reserved Only for training and service purposes CONTENTS CONTENTS 2 SAFETY PRECAUTIONS 3 SERVICING PRECAUTIONS 4 SPECIFICATION 6 SOFTWARE UPDATE 9 BLOCK DIAGRAM 10 EXPLODED VIEW 11 DISASSEMBLY GUIDE APPENDIX TROUBLE SHOOTING GUIDE APPENDIX ...

Page 3: ...he set is safe to operate without damage of electrical shock Leakage Current Cold Check Antenna Cold Check With the instrument AC plug removed from AC source connect an electrical jumper across the two AC plug prongs Place the AC switch in the on position connect one lead of ohm meter to the AC plug prongs tied together and touch other ohm meter lead in turn to each exposed metallic parts such as ...

Page 4: ...c charge on your body by touching a known earth ground Alter natively obtain and wear a commercially available discharging wrist strap device which should be removed to prevent poten tial shock reasons prior to applying power to the unit under test 2 After removing an electrical assembly equipped with ES devices place the assembly on a conductive surface such as aluminum foil to prevent electrosta...

Page 5: ...oints of the two original leads If they are not shiny reheat them and if necessary apply additional solder Fuse and Conventional Resistor Removal Replacement 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 3 Solder the connections CAUTION Maintain original spacing between the replaced component...

Page 6: ...tage of each products is marked by models 4 Specification and performance of each parts are followed each drawing and specification by part number in accordance with BOM 5 The receiver must be operated for about 20 minutes prior to the adjustment 3 Test method 1 Performance LGE TV test method followed 2 Demanded other specification Safety UL CSA CE IEC specification EMC FCC ICES CE IEC specificati...

Page 7: ...31 469 59 94 25 17 VESA VGA 4 800 600 37 879 60 31 40 VESA SVGA 5 1024 768 48 363 60 00 65 VESA XGA 6 1360 768 47 712 60 015 84 75 VESA WXGA 7 1152 864 54 348 60 053 80 VESA Support to HDMI PC 8 1280 1024 63 981 60 020 109 00 SXGA 9 1920 1080 67 5 60 158 40 WUXGA Reduced Blanking 10 3840 2160 54 24 00 297 00 UDTV 2160P 11 3840 2160 56 25 25 00 297 00 UDTV 2160P 12 3840 2160 67 5 30 00 297 00 UDTV ...

Page 8: ...33 71 29 97 79 120 HDTV 1080P 18 1920 1080 33 75 30 00 79 20 HDTV 1080P 19 1920 1080 56 25 50 00 148 5 HDTV 1080P 20 1920 1080 67 432 59 94 148 350 HDTV 1080P 21 1920 1080 67 5 60 00 148 50 HDTV 1080P 22 3840 2160 53 95 23 98 296 703 UDTV 2160P 23 3840 2160 54 24 00 297 00 UDTV 2160P 24 3840 2160 56 25 25 00 297 00 UDTV 2160P 25 3840 2160 61 43 29 97 296 703 UDTV 2160P 26 3840 2160 67 5 30 00 297 ...

Page 9: ... About This TV page for update 5 TV is updating 6 After finished the update below Pop up appear 7 Click Yes TV will be DC OFF ON 8 After TV turned on Check the updated SW Version and Tool Option 2 NSU This Function is needed to connect to the internet 1 Menu All Settings General About This TV 2 Click CHEK FOR UPDATES system check newest version 3 Click DOWNLOAD AND INSTALL 4 TV is updating 5 After...

Page 10: ...USB I2C 4 Ext IR AV D Demod I2C 3 R E A R H AMP CVBS L R SPDIF OUT I2C 1 IR BLUTOOTH WIFI SUB ASSY IR KEY USB_WIFI BT Tuner I2C 5 LAN R E A R ETHERNET LAN PHY X_TAL 25MHz CVBS SIF Tuner COMP USB1 3 0 USB2 2 0 USB3 2 0 OCP 1 6A OCP 1 5A R E A R OCP 1 5A YPbPr UART RX TX 2133Mbps 1066Mhz RS232 KEY HDMI1 2 0 HDMI2 2 0 HDMI3 2 0 R E A R ARC HDMI4 2 0 HDMI Sub Board I2S PWM FAN1 FAN2 Audio 2 AMP 0X56 0...

Page 11: ...EW It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent Shock Fire or other Hazards Do not modify the original design without permission of manufacturer IMPORTANT SAFETY NOTICE 410 LV1 200 530 820 120 420 400 121 550 AR1 700 AR2 AW4 AW3 AB2 AB4 AB1 AB3 540 821 841 531 873 532 850 860 571 130 570 842 300 123 500 503 510...

Page 13: ...2 1 1 Put the soft cloth and set AV Box as indicated below picture 1 2 Stand AV Box as indicated below picture 1 1 1 2 OLED77W7 Working Guide Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 14: ...Ass y 2 2 Disassemble screw 8EA Middle Bottom Ass y Rear Cover Ass y 2 1 2 2 2 2 2 1 Front View Top View 2 1 2 1 2 1 2 1 2 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 1 2 1 OLED77W7 Working Guide Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 15: ...ing direction from Right to Left Push the Cover Bottom Rear both side and pull as indicated below picture 툭 3 1 Cover Bottom Rear 툭 3 1 3 1 3 1 3 1 3 1 3 1 3 1 3 1 OLED77W7 Working Guide Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 16: ...ove from side to side Then you can disassemble more easily 4 4 Before open the Ass y Cover Top you have to disconnect cable 2points After disassemble Cover Bottom Rear Ass y CoverTop 4 1 4 2 4 3 4 4 4 4 OLED77W7 Working Guide For disassembly guide of Ass y Cover Top item refer to 19 1 23 term Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 17: ...le screw 4ea that is fixing of Speaker R 5 3 Disconnect Speaker cable Ass y CoverTop 제거 후 Speaker R Speaker L 5 1 5 1 5 1 5 1 5 1 5 2 5 2 5 2 5 2 5 2 5 3 OLED77W7 Working Guide Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 18: ...EA 6 3 Remove PCB 2EA and EMI Tape 4EA and put the cable right side After disassemble Speaker 6 1 6 1 6 2 6 2 6 1 6 1 6 2 6 2 6 3 6 3 6 3 6 3 6 1 2 6 1 2 6 3 OLED77W7 Working Guide Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 20: ... Shield 8 1 8 1 8 1 8 1 8 2 8 2 8 2 8 2 8 2 8 2 8 2 8 3 8 3 8 3 8 3 8 4 8 6 Disconnect the cable 8 4 8 5 8 5 8 5 8 5 8 6 8 6 8 7 Remove Power Warning Hold end of the Power PCB to prevent ELECTRONIC SHOCK OLED77W7 Working Guide Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 21: ...w is covered with Insulation sheet disassemble the screw after lift end of the Insulation Sheet After disassemble Power 9 1 9 1 Power Bottom Shield 9 1 9 1 9 1 9 1 9 1 9 2 OLED77W7 Working Guide 9 2 Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 22: ...f Power Bottom Shield 10 2 Disconnect cable below of left of Power Bottom Shield 3points 10 2 10 2 10 2 OLED77W7 Working Guide Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 23: ...ct the cable from Main PCB and Sub Main PCB After disassemble Power Bottom Shield 11 2 11 2 11 3 11 3 11 3 11 3 OLED77W7 Working Guide Main PCB T Con PCB 11 1 11 2 11 3 11 1 Sub Main PCB 11 1 11 2 11 3 Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 24: ...ixing Sub Main PCB 12 4 Disassemble T Con Main PCB and Sub Main PCB Main PCB T Con PCB 12 1 12 2 12 1 12 1 12 1 12 1 12 2 12 2 12 2 12 2 12 4 Gap Pad Gap Pad Gap Pad Sub Main PCB 12 1 12 1 12 3 12 3 12 3 12 3 12 3 Gap Pad OLED77W7 Working Guide Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 25: ...m holder Disconnect cable 2ea from LED Lighting After disassemble T Con Main PCB Middle Cabinet LED Lighting 13 1 OLED77W7 Working Guide Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 26: ...ight side of LED Lighting to disassemble LED Lighting Latch is 4ea Refer the below picture 14 1 14 1 14 1 14 1 방향 LED Lighting 14 1 14 2 OLED77W7 Working Guide Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 27: ... 15 1 Disassemble screw 1EA and remove Power Cord 15 1 15 1 Power Cord OLED77W7 Working Guide Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 28: ...After disassemble LED Lighting Power Cord 16 4 16 1 16 1 Bottom Plate 16 1 16 1 16 1 16 1 16 1 16 1 16 1 16 1 16 1 16 2 In this point remove EMI tape first than disassemble the screw OLED77W7 Working Guide 16 2 16 2 16 2 16 2 16 2 16 2 16 3 16 3 Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 29: ...Indicator 17 3 Disassemble cable from Cover Bottom and disassemble WiFi Bracket After disassemble Middle Cabinet 17 1 17 2 17 3 Cover Bottom Joystick Indicator Wifi 17 1 17 2 17 2 OLED77W7 Working Guide Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 30: ...e Bottom plate and remove 18 2 All working is done Done Disassembly Guide for Cover Top Assy start from next page After disassemble Joystick Indicator Wifi 18 1 18 2 18 2 18 2 18 2 18 1 18 1 18 1 OLED77W7 Working Guide Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 31: ...Disassembly Guide for Assembly Cover Top 19 1 19 1 19 1 19 2 19 2 19 2 19 2 19 2 19 2 Rear of Set Front of Set Caution When removing Top Cover and Moving Ass y do not hold the drive shaft and switch by hand OLED77W7 Working Guide Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 32: ...t towards the front Rear of Set Front of Set Rear of Set Front of Set Rib Rib Rib Rib of moving Ass y is inserted into projection part shape of Cover Top OLED77W7 Working Guide Disassembly Guide for Assembly Cover Top Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 33: ... direction of arrow mark Handle with care and slowly to avoid damage Do not force to the product strongly 21 1 OLED77W7 Working Guide Disassembly Guide for Assembly Cover Top Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 34: ...crew 4EA that is fixing Sliding Cover Handle with care and slowly to avoid damage Do not force to the product strongly 22 1 21 2 21 2 21 2 21 2 OLED77W7 Working Guide Disassembly Guide for Assembly Cover Top Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 35: ...bnormal When replacing the Sliding Cover or Top cover Check that there is no color difference between Cover Top and Sliding Cover Sliding Cover Cover Top OLED77W7 Working Guide Caution for reassembly Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 37: ... off while viewing power auto on off 7 8 C Audio error No audio Normal video 8 9 Wrecked audio discontinuation noise 9 10 D Function error Remote control Local switch checking 10 MR15R operating checking 11 11 12 Wifi operating checking 12 13 External device recognition error 13 14 E Noise Circuit noise mechanical noise 14 15 F Exterior error Exterior defect 15 First of all Check whether there is ...

Page 38: ...parts End Always check record S W Version and White Balance value before replacing the Main Board Replace Main Board Re enter White Balance value Precaution Established date Standard Repair Process Revised date 1 16 OLED TV Error symptom A Video error No video Normal audio A9 A1 A9 A4 A2 First of all Check whether all of cables between board is inserted properly or not Main B D Power B D LVDS Cabl...

Page 39: ...udio Check and replace MAIN B D Y Replace Power Board and repair parts N End Standard Repair Process A Video error No video No audio A9 Established date Revised date 2 16 Error symptom 2 OLED TV Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 40: ... using Digital signal level meter By using Diagnostics menu on OSD All Settings Channels Channel Tuning Manual Tuning Check the Signal Signal strength Normal over 50 Signal Quality Normal over 50 Normal Picture Y Contact with signal distributor or broadcaster Cable or Air N Normal Picture Y Close N A4 Standard Repair Process Established date Revised date 3 16 Error symptom 3 N OLED TV Y Close N S ...

Page 41: ...t error Check external device and cable Y External device Cable normal HDMI error Check external device and cable Replace Main T con B D Replace Main T con B D N N A Video error Color error A6 N Y End Replace module Request repair for external device cable Color error A7 Standard Repair Process Established date Revised date 4 16 Error symptom 4 OLED TV Copyright 2017 LG Electronics Inc All rights ...

Page 42: ...DMI DVI by connecting Jig pattern Generator Set top Box etc N Y Replace Main T con B D Screen normal Check screen condition by input External Input Component HDMI DVI Request repair for external device Component error HDMI DVI Connect other external device and cable Check normal operation of External Input Component RGB and HDMI DVI by connecting Jig pattern Generator Set top Box etc Replace Main ...

Page 43: ...ain B D Y OK Replace Main B D N Y Normal Check ST BY 3 5V Replace Power B D N Y Normal voltage Replace Power B D Y A8 A9 A9 A9 Standard Repair Process Established date Revised date 6 16 Error symptom 6 Stand By Red or Turn On Operating Turn Off Abnormal Case Blinking AM_MODE Orange Moving Speaker Magenta FAN or High Temperature Blue Close OLED TV If LED Blinking happened A15 A16 A17 Copyright 2017...

Page 44: ...Y_REMOTE_KEY Power off by REMOTE CONTROL POWER_OFF_BY_OFF_TIMER Power off by OFF TIMER POWER_OFF_BY_SLEEP_TIMER Power off by SLEEP TIMER POWER_OFF_BY_INSTOP Power off by INSTOP KEY POWER_OFF_BY_AUTO_OFF Power off by AUTO OFF POWER_OFF_BY_ON_TIMER Power off by ON TIMER POWER_OFF_BY_RS232C Power off by RS232C POWER_OFF_BY_RESREC Power off by Reservated Record POWER_OFF_BY_RECEND Power off by End of ...

Page 45: ...Y_REMOTE_KEY Power off by REMOTE CONTROL POWER_OFF_BY_OFF_TIMER Power off by OFF TIMER POWER_OFF_BY_SLEEP_TIMER Power off by SLEEP TIMER POWER_OFF_BY_INSTOP Power off by INSTOP KEY POWER_OFF_BY_AUTO_OFF Power off by AUTO OFF POWER_OFF_BY_ON_TIMER Power off by ON TIMER POWER_OFF_BY_RS232C Power off by RS232C POWER_OFF_BY_RESREC Power off by Reservated Record POWER_OFF_BY_RECEND Power off by End of ...

Page 46: ...wer Board and repair parts Check Speaker disconnection N Y Replace Speaker Replace MAIN Board End C Audio error No audio Normal video A11 A12 A9 Disconnection Established date Revised date 8 16 Error symptom Standard Repair Process 8 OLED TV Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 47: ...al Input Connect and check other external device N Y Normal audio Check and fix external device Replace Power B D N Y Normal voltage Check input signal RF External Input signal Signal normal When RF signal is not received Request repair to external cable ANT provider Y Check audio B Voltage 20V Replace Main B D In case of External Input signal error Check and fix external device Replace Main B D N...

Page 48: ... Replace Baterry of R C Check Repair Cable connection Connector solder Normal operating Check B 3 5V On Main B D A13 Normal Voltage Close N N Check 3 5v on Power B D Replace Power B D or Replace Main B D Power B D don t have problem A9 Check IR Output signal Normal Signal N Y Repair Replace IR B D N A13 Replace Main B D Y A13 Standard Repair Process Established date Revised date 10 16 Error sympto...

Page 49: ...el Is show ok message N N N Y Replace MR16A Turn off on the set and press the wheel Press the back key about 5sec If you conduct the loop at 3times change the MR16A Y Check the INSTART menu RF Receiver ver is 00 00 Y Check Repair RF assy connection N Down load the Firmware INSTART MENU 12 RF Remocon Test 3 Firmware download Y RF Receiver ver is 00 00 N A14 A4 A4 OLED TV Close Close Close Close Cop...

Page 50: ...and fix external device cable HDMI DVI Optical Recognition error Replace Main B D Replace Main B D Fix in accordance with technical information D Function error External device recognition error Established date Revised date 14 16 Error symptom Standard Repair Process 13 OLED TV Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 51: ...cable connection N Check the Wifi wafer 1pin Standard Repair Process Established date Revised date 12 16 Error symptom 12 Change the Wifi assy Normal Voltage Y Y N Replace Main B D Wi Fi Mac value is NG N A15 A4 A4 A15 OLED TV Close Close Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 52: ... shown in the solution manual For models without any fix information provide the description Mechanical noise is a natural phenomenon and apply the 1st level description When the customer does not agree apply the process by stage Describe the basis of the description in Part related to nose in the Owner s Manual E Noise Circuit noise mechanical noise Established date Revised date 15 16 Error sympt...

Page 53: ...binet Replace remote control Remote control damage Stand dent Replace stand F Exterior defect Exterior defect Established date Revised date 16 16 Error symptom Standard Repair Process 15 OLED TV Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 54: ...h checking method A2 3 Version checking method A3 4 Tuner Checking Part A4 5 A Video error _Vertical Horizontal bar residual image light spot Connection diagram A5 6 A Video error_ Color error Check Link Cable EPI reconnection condition A6 7 Appendix Defected Type caused by T Con Inverter Module Exchange Module 1 A 1 2 Exchange Module 2 A 2 2 Copyright 2017 LG Electronics Inc All rights reserved O...

Page 55: ...hile viewing POWER OFF MODE checking method A10 11 C Audio error_ No audio Normal video Checking method in menu when there is no audio A11 12 Voltage and speaker checking method when there is no audio A12 13 D Function error Remote control operation checking method A13 14 Motion Remote operation checking method A14 15 Abnormal Case A15 Copyright 2017 LG Electronics Inc All rights reserved Only for...

Page 56: ... Normal audio A2 Entry method 1 Press the ADJ button on the remote control for adjustment 2 Enter into White Balance of item 12 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 OLED TV Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 57: ...ideo error_Video error video lag stop A3 Established date Revised date Error symptom Content A3 All Settings Channels Channel Tuning When the signal is strong use the attenuator 10dB 15dB 20dB etc OLED TV Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 58: ...ror video lag stop 1 Checking method for remote control for adjustment Version A4 Established date Revised date Error symptom Content A4 Press the IN START with the remote control for adjustment OLED TV Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 59: ...sed date Error symptom Content A5 Checking method 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 OLED TV Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 60: ...tical Horizontal bar residual image light spot A6 Established date Revised date Error symptom Content A6 As the part connecting to the external input check the screen condition by signal OLED TV Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 61: ...Error symptom Content A7 2 Check the contact condition of the Link Cable especially dust or mis insertion OLED TV 1 Remove all of the top assy and components for making the same situation like picture under below Please Refer to the exploded diagrams of TV set Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 62: ...cal abnormal display Line Dim Crosstalk Crosstalk Press damage Brightness difference Burnt Un repairable Cases In this case please exchange the module Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 63: ...In this case please exchange the module Angle view Color difference Brightness dot noise Half dead Green Noise on power on off time Line Defect Brightness difference Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 64: ...front display Logo B Power error _No power A8 Established date Revised date Error symptom Content A8 ST BY condition On or Off Power ON condition Turn Off OLED TV Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 65: ...wer error _No power A9 24Pin Power Board Main Board 1 DRV ON 2 DPC_CTL 3 GND 4 GND 5 20V 6 20V 7 12V 8 12V 9 GND 10 GND 11 PWR ON 12 AC_DET 13 GND 14 GND 15 GND 16 GND 17 12V 18 12V 19 GND 20 GND 21 20V 22 20V 23 20V 24 20V Check the DC 20V 12V 3 5V OLED TV Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 66: ...iling viewing A10 Established date Revised date Error symptom Content A10 Entry method 1 Press the IN START button of the remote control for adjustment 2 Check the entry into adjustment item 3 power On Off Status OLED TV Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 67: ...ormal video A11 Established date Revised date Error symptom Content A11 Checking method 1 Press the Setting button on the remote control 2 Select the Sound function of the Menu 3 Select the Sound Out 4 Select TV Speaker OLED TV Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 68: ...input voltage remove and check the connector 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 1 SPK_R 2 SPK_R _ 3 SPK_L 4 SPK_L 5 SPK_R WF 6 SPK_R _WF 7 SPK_L _WF 8 SPK_L _WF OLED TV 24Pin Power Board Main Board 1 DRV ON 2 DPC_CTL 3 GND 4 GND 5 20V 6 20V 7 12V 8 12V 9 GND 10 GND 11 PWR ON 12 AC_DET 1...

Page 69: ... Detail Technical Manual Remote control operation checking method D Function error A13 Established date Revised date Error symptom Content A13 Checking order 1 2 Check IR cable condition between IR Main board 3 Check the st by 3 5V on the terminal 8 on P4000 OLED TV Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 70: ...I_DP 4 GND 5 WOL WIFI_POWER_ON 6 3 5V_WIFI 7 COMBO_RESET 8 GND 9 BT_WAKEUP_DEVICE 10 BT_WAKEUP_HOST 11 GND 12 GND 13 N C 14 N C Checking order 1 Check IR cable condition between IR Main board 2 Check WIFI Combo cable condition between WIFI Combo Assy Main board 3 Check the 3 5V_WIFI P4004 on the terminal 1 6 OLED TV Copyright 2017 LG Electronics Inc All rights reserved Only for training and servic...

Page 71: ...ent A15 D Function error Checking order 1 Check LED Color Orange 2 Unplug the power cord 3 Reconnect Cable to AV Box or Extension Cable 4 Plug the power cord OLED TV AM_MODE Connection Error Alarm Blinking Orange Color LED Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 72: ...Moving Speaker Error Alarm Blinking Magenta Color LED Checking order 1 Check LED Color Magenta 2 Check MOTOR 12V Q10002 or L10002 3 Check DET SW broken or not 4 Check Motor 5 Replace each part or Cover Top Assy Door S W Up Down S W Door Motor Up Down Motor Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

Page 73: ...r OLED TV FAN or Overheat mode Alarm Blinking Blue Color LED Checking order 1 Check LED color Blue 2 Check FAN Stauts Poweronly mode or Instart OLED 3 Replace FAN or Temperature Sensor 2 1 2 2 Poweronly Instart 13 OLED 1st FAN 2nd FAN Temp Sensor Copyright 2017 LG Electronics Inc All rights reserved Only for training and service purposes ...

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