LG OLED77G6P Service Manual

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OLED TV

SERVICE MANUAL

CHASSIS : EA61G

MODEL : OLED77G6P

CAUTION

BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

P/NO : MFL69469902 (1608-REV00)

Internal Use Only

OLED77G6P-U

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Summary of Contents for LG OLED77G6P

Page 1 Internal Use Only OLED TV SERVICE MANUAL CHASSIS : EA61G MODEL : OLED77G6P OLED77G6P-U CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL69469902 (1608-REV00)
Page 2 ADJUSTMENT INSTRUCTION .............. 13 BLOCK DIAGRAM .................. 22 EXPLODED VIEW .................. 27 ASSEMBLY / DISASSEMBLY........... 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 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 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 SPDIF out(1EA) Optical Audio out Rear (1EA), USB Input(3EA) EMF, DivX HD, For SVC (download) USB1 (USB3.0) USB2,3 (USB2.0) - 6 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 7 UDTV 2160P UHD only 4096*2160 53.95 23.97 296.703 UDTV 2160P UHD only 4096*2160 24.00 297.00 UDTV 2160P UHD only - 7 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 8 61.43 29.97 296.703 UHD only 4096*2160 67.5 30.00 UHD only 4096*2160 60.00 UHD only(Port1,2) 4096*2160 59.94 593.407 UHD only(Port1,2) - 8 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 9 67.5 30.00 297.00 HDTV 2160P 4096*2160 HDTV 2160P 2D to 3D, Top & Bottom(half), Side by Side(half), Port1,2 Only - 9 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 10 Primary(HDTV 1080I) Line alternative (HDTV 1080I) 67.432/67.50 59.94 / 60 148.35/148.5 Frame packing Primary(HDTV 1080I) Line alternative (HDTV 1080I) - 10 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 11 Top & Bottom(half), Side by Side(half), Others 640*350 2D to 3D, 720*400 Side by Side(half), Top & Bottom 640*480 800*600 1152*864 - 11 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 12 * Remark: 3D Input mode Side by Side Top & Bottom Checkerboard Single Frame Frame Column Sequential Packing Interleaving Interleaving - 12 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 13 3.3. Etc. ▪ Ship-out mode ▪ Service Option Default ▪ USB Download(S/W Update, Option, Service only) ▪ ISP Download (Option) - 13 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 14 D-book 4.0 (2) Input IP set up for an inspection to Test Program. * IP Number : 12.12.2.2. - 14 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 15 4.5.1. Using RS232 Command Command Set ACK Transmission [A][l][][Set ID][][20][Cr] [O][K][x] or [N][G] ■ Check the menu on in-start - 15 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 16 30 F2 70 5A 80 B0 58 ⓓ Model Name(Hex): LGTV 40 8A 00 00 1E 02 3A 80 38 2D 40 ⓔ Checksum(LG TV): Changeable by total EDID data. 58 2C 45 00 1E 00 00 FD 00 3A ⓕ Vendor Specific(HDMI)
Page 17 10cm and perpendicular of the module surface (80°~ 100°) (3) Aging time 1) After Aging Start, Keep the Power ON status during 5 Minutes. - 17 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 18 0.278 11,000K -0.0030 B Gain Medium 0.286 0.289 9300K 0.0000 R Cut Warm 0.313 0.329 6500K +0.0030 G Cut - 18 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 19 Country Group then on the lower Country option, select US, CA, MX. Selection is done using +, - or ►◄KEY - 19 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 20 *Measurement condition: (1) RF input: Mono, 1KHz sine wave signal, 100% Modulation (2) CVBS, Component: 1KHz sine wave signal (0.4Vrms) - 20 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 21 (2) Select "Tool Option 1" and Push “OK” button. (3) Punch in the number. (Each model has their number.) - 21 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 27 Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. - 27 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 29 8EA at bottom side of [Base, Metal]. (1-5) Move the [Moving Handle] 2EA from STAND TYPE to WALL TYPE. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 30 (2-1) Unfasten the [Moving handle] 2EA in the middle side of [Cover Ass’y, Rear Center]. (2-2) Unfasten Screw 5EA at the bottom side of [Cover Ass’y, Rear Center]. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 31 (You don’t need a Jig like ‘Plastic scraper for 65G6’ because it will be much easier for you to detach this part compared to 65G6.) (3-3) If you pulled up all bottom area of [Cover Ass’y, Rear Center], push it up with a little shaking. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 32 OLED77G6 Disassembly Guide (4-1) Unfasten Screw 8EA. (4-2) Disconnect Power Cable 3EA. (4-3) Disconnect VX1 Cable 2EA. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 33 (5-3) Pull with raising up the [AV BOX] like a picture to separate the hooks of [Hinge Ass’y]. (This process should be worked by two workers.) Separate LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 34 You need to check the arrow mark. If there are arrow marked screws, Do not unfasten that. Grille ※ Do not unfasten arrow marked screws Table Cotton sheet or Pad ※ Do not unfasten these screws LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 35 OLED77G6 Disassembly Guide (7-1) Turn the [AV BOX] like this guide. Turn the [AV Box] LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 36 OLED77G6 Disassembly Guide (8-1) ~ (8-4) Separate the inside latches of [Cover Ass’y, AV BOX] following the steps. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 37 (9-2) Do the same working at Opposite side to separate middle area of [Cover Ass’y, AV BOX]. You have to separate these inside latches. Latch separation Latch separation LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 38 OLED77G6 Disassembly Guide (10-1) ~ (10-2) Put the [Cover Ass’y, AV Box] up like the picture, and lay down on the table. 10-1 10-2 LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 40 (12-1) Unfasten Screw 6EA at [Hinge Ass’y]. (L/R each 3EA) (12-2) Unfasten Screw 6EA at [Cover, Hinge Front]. 12-1 12-1 12-1 12-1 12-2 12-2 12-2 12-2 12-2 12-1 12-2 12-1 LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 41 (13-3) Separate the [Cover Ass’y, Hinge Cable] and then put down it on the table. (※ If you change these cables, refer to the extra guide at final pages.) 13-1 13-2 13-3 LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 42 (14-1) ~ (14-4) Disconnect and separate [Woofer Speakers] and [Front Speakers]. Front Speaker Woofer Speaker Front Speaker Woofer Speaker 14-2 14-3 14-1 14-4 14-1 14-2 14-4 14-3 LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 43 (15-2) Unfasten the Screw 6EA from [Main PCB] and Disconnect indicated connectors. Main PCB Sub PCB 15-2 15-1 15-2 15-2 15-2 15-1 15-1 15-2 15-1 15-2 15-2 15-1 LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 44 When you separate the PCB, you need a little power because gap pads were stuck at the bottom of PCB. 16-1 16-2 16-3 ※ you need a little power because gap pads were stuck at the bottom of PCB. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 45 PSU Slave PSU Mater 17-1 17-1 17-2 17-2 17-1 17-2 17-2 17-1 17-1 17-1 17-1 17-2 17-2 17-2 17-3 17-4 17-1 Thermal PCB LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 46 (18-3) Disassemble [WIFI bracket]. (18-4) Detach [PSU] Gap Pad 2EA. (18-5) Detach [Main] Gap Pad 2EA. WIFI 18-3 18-1 18-2 Joystick 18-4 18-5 LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 47 OLED77G6 Disassembly Guide (19-1) Disassemble the [Bracket Ass’y, Locking] from Module. ☞ Disassembly Complete LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 49 (1-2) Fasten [Joystick bracket] Screw 1EA. (1-3) Assemble [WIFI bracket]. (1-4) Attach [PSU] Gap Pad 2EA. (1-5) Attach [Main] Gap Pad 2EA. WIFI Joystick LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 50 (2-3) Fasten the [Thermal PCB] Screw 1EA. (2-4) Fasten the [Fan] Screw 2EA. (Screw Type Caution) PSU Slave PSU Mater M4 Screw 1EA Thermal PCB LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 51 OLED77G6 Re-assembly Guide (3-1) ~ (3-2) put down the [Main PCB] in place with inserting the Tuner. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 52 (4-1) Put down [Sub PCB] and Fasten it with Screw 4EA, and then connect the connectors. (4-2) Fasten the [Main PCB] Screw 6EA and Connect the indicated connectors. Main PCB Sub PCB LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 53 (5-1) ~ (5-4) Insert the Connector of [Woofer & Front Speaker] and then put it down in place. Front Speaker Woofer Speaker Front Speaker Woofer Speaker LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 54 (6-1) Connect the Power Cable Connector 3EA from the Bottom of [Cover Ass’y, Hinge Cable]. (6-2) Connect the VX1 Cable Connector 2EA from the Bottom of [Cover Ass’y, Hinge Cable]. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 55 (7-1) Fasten the Screw 3EA at each part of [Hinge Ass’y] L/R. (Total 6EA) (7-2) Fasten the Screw 6EA at [Cover, Hinge front]. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 56 (8-1) Connect a Power Cord. (8-2) Arrange the Cable in rib shapes at [Bracket, AV Bottom]. (Refer to the Picture) Arrange like this LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 57 (9-2) Take out the VX1 Cable 2EA from Bottom Box to upside passing the hole. (9-3) Arrange and assemble the [Cover Ass’y, AV Box] to Bottom Box. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 58 (10-1) ~ (10-5) Cover and Push evenly [Cover Ass’y, AV Box] with checking assembly status. (10-6) Check latches indicated the picture whether it is assembled well or not. 10-1 10-2 10-3 10-4 10-5 10-6 LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 59 11-2 11-2 11-2 11-2 11-2 11-2 11-2 11-2 11-2 11-2 11-2 11-2 11-2 11-2 11-2 11-2 11-2 11-2 11-2 11-2 11-2 11-2 LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 60 [Extra Guide] Working Guide to replace a Module. Remove the protection film for Module. MODULE Front surface MODULE Rear surface Remove the protection film for Module. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 61 (12-2) Hook the 4EA Springs from Locking Bracket Ass’y to Rail Guide bracket (White color). Landing 12-1 12-2 12-2 12-2 12-2 Insert Caution! LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 62 (13-2) Connect the Power Cable 3EA. (13-3) Connect the VX1 Cable 2EA. 13-3 13-2 13-3 13-2 13-1 13-1 13-2 13-1 13-1 13-1 13-1 13-1 13-1 13-2 13-3 LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 63 (14-3) Fasten the Screw 5EA at the bottom of [Cover Ass’y, Rear Center]. 14-1 14-2 14-2 14-2 14-3 14-3 14-3 14-3 14-3 14-3 LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 64 (15-6) Make the TV SET stand up by two or more people. (15-7) Re-assembly Complete. 15-1 15-2 15-3 15-4 15-5 15-6 15-7 ☞ Re-assembly Complete LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 65 ※Extra Guide : OLED77G6 Hinge Cable Cover Assy Disassembly/Re-assembly Guide (a-1) Unfasten Screw 2EA at [Hinge Ass’y] L/R (a-2) Unfasten Screw 4EA at [Hinge Cable Cover Front & Rear] LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 66 ※Extra Guide : OLED77G6 Hinge Cable Cover Assy Disassembly/Re-assembly Guide (b-1) ~(b-3) Holding each surface of [Hinge Cable Cover Front & Rear], Separate Latches in both Parts sequentially like below pictures. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 67 ※Extra Guide : OLED77G6 Hinge Cable Cover Assy Disassembly/Re-assembly Guide (c-1)~(c-2) Separate the Cables from [Cover, Hinge Cable Rear].  Disassembly Complete. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 68 (d-2) Arrange the Cables like below picture. You have to keep the point which are gathered by taping and follow the cable management guide. Upside Connector with label taping Taping Position should be here. Connector with label downside LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 69 (e-2) Refer to the taping position in the pictures to arrange the cables. Upside Taping Position should be here. Taping Position downside LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 70 ※Extra Guide : OLED77G6 Hinge Cable Cover Assy Disassembly/Re-assembly Guide (f-1) Assemble the Latch structures between [Cover, Hinge Cable Rear & Front]. (f-2) Fasten Screw 4EA. (Torque 3~4 kgf ) LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 71 (g-1) Put down [Hinge Ass’y] L/R like below picture and fasten Screw 2EA. (Torque 3~4 kgf ) (g-2) Re-assembly Complete. ☞ Disassembly/Re-assembly Complete. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 74 Circuit noise, mechanical noise F. Exterior error Exterior defect First of all, Check whether there is SVC Bulletin in GSCS System for these model. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 75 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 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 76 Power No Video/ replace voltage? Board ( 3.5V,12V,20V No audio MAIN B/D or 24V…) Replace Power Board and repair parts LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 77 2. Install Booster S/W Upgrade Normal Contact with signal distributor or broadcaster (Cable or Air) Picture? Normal Picture? Replace Main B/D Close Close LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 78 Request repair for external device/cable Check external External device device and Replace Main/T-con B/D HDMI /Cable cable error normal LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 79 Screen (Check normal operation of normal? Main /T-con External Input, Component, RGB and HDMI/DVI by connecting Jig, pattern Generator ,Set-top Box etc. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 80 Measure voltage of each output of Power B/D Normal? ※ Normal Replace Main B/D voltage? Normal Close Check ST-BY 3.5V voltage? ☞A9 Replace Power B/D Replace Power LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 81 "POWER_OFF_BY_SW_DW" Power off by S/W Download "POWER_OFF_BY_UNKNOWN" Power off by unknown status except listed case Abnormal "POWER_OFF_BY_CPU_ABN" Power off by CPU Abnormal LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 82 Screen normal voltage Speaker off Board Cancel OFF Replace Power Board and repair parts Check Replace MAIN Board Disconnection Speaker disconnection Replace Speaker LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 83 Connect and check Normal External Input other external audio? signal error) device Check and fix external device Check and fix external device LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 84 (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 LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 85 Close Down load the Firmware •If you conduct the loop at 3times, * INSTART MENU12.RF Remocon Test3. Firmware change the MR15R. download LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 86 1pin Main B/D ☞A15 Check & Repair Close Wifi cable connection ☞A4 Wi-Fi Mac value Close is “NG”? Change the Wifi assy LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 87 - S/W Version HDMI/ Check and fix Replace Main B/D DVI, Optical Fix in external device/cable Recognition error accordance with technical information LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 88 “Part related to nose” in the Owner’s then proceed as shown in the solution manual Manual. (For models without any fix information, provide the description) LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 89 Zoom part with Module Replace module exterior damage damage Cabinet Replace cabinet damage Remote control Replace remote control damage Stand Replace stand dent LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 90 A. Video error_ Color error condition <Appendix> Exchange Module (1) A-1/2 Defected Type caused by T-Con/ Exchange Module (2) A-2/2 Inverter/ Module LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 91 Remote control operation checking method D. Function error Motion Remote operation checking method Wifi operation checking method E. Etc Tool option changing method LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 92 Check Vx1 lock LED light with naked eye date After Remove the Rear Cover, turning on the power and check with the naked eye, Whether you can see video LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 93 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 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 94 TUNER input signal strength checking method Content date  All Settings  Channels Channel Tuning When the signal is strong, use the attenuator (-10dB, -15dB, -20dB etc.) LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 95 Version checking method Content date 1. Checking method for remote control for adjustment Version Press the IN-START with the remote control for adjustment LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 96 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. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 97 Revised Content Connection diagram date As the part connecting to the external input, check the screen condition by signal LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 98 Revised Content Check Link Cable (EPI) reconnection condition date Check the contact condition of the Link Cable, especially dust or mis insertion. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 99 Vertical abnormal display Brightness difference Line Dim Crosstalk Press damage Crosstalk Un-repairable Cases In this case please exchange the module. Burnt A – 1/2 LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 100 Brightness difference Green Noise on power on/off time Line Defect Un-repairable Cases In this case please exchange the module. Mura A – 2/2 LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 101 B. Power error _No power symptom date OLED TV Revised Content Check front display Logo date ST-BY condition: On or Off Power ON condition: Turn Off LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 102 Check the DC 24V, 12V, 3.5V. 4Pin(Power Board ↔ 24Pin(Power Board ↔ Main Board) Analog Board) 12V_ON 3.5V 3.5V 3.5V AC_DET RL_ON INV_CTL LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 103 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) LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 104 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 LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 105 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. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 106 Light Checking order 1, 2. Check IR cable condition between IR & Main board. Check the st-by 3.5V on the terminal 4 LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 107 Check WIFI Combo cable condition between WIFI Combo Assy & Main board. Check the st-by 3.5V P4000 on the terminal 4 Check the 3.5V_WIFI P4001 on the terminal 8 LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 108 ③ Checking order 1, 2. Check Wifi cable condition between Wifi assy & Main board. Check the 3.3V on the terminal 8. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...

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