LG OLED83C2P A Series Service Manual

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OLED TV

SERVICE MANUAL

CHASSIS : E*21G

MODEL : OLED83C2P**A

CAUTION

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

P/NO : MFL71888104 (2201-REV00)

Any reproduction, duplication, distribution (including by way of email, facsimile or other 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.

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Summary of Contents for LG OLED83C2P A Series

Page 1 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.
Page 2 SPECIFICATION ..................6 SOFTWARE UPDATE ................12 BLOCK DIAGRAM ................. 14 EXPLODED VIEW .................. 15 ASSEMBLY / DISASSEMBLY GUIDE ............ 16 TROUBLE SHOOTING GUIDE ..........APPENDIX - 2 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 3 When the exposed metal has no return path to the chassis the reading must be infinite. An other abnormality exists that must be corrected before the receiver is returned to the customer. - 3 - Copyright © LG Electronics Inc. All rights reserved. Only 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. Only training and service purposes.
Page 6 - Digital TV : DTMB (China/Hongkong), DVB-C (China) - Analogue TV : PAL D/K,I, NTSC-M (China/ Hongkong) 4) Philliphine - Digital TV : ISDB-T - Analogue TV : NTSC-M - 6 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 7 * Hong Kong - 3780, 0.4/0.6, 4/16/64QAM, PN945, 720 ► DVB-C - Symbolrate : 4.0Msymbols/s to 7.2Msymbols/s - Modulation : 16QAM, 64-QAM, 128-QAM and 256-QAM - 7 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 8 000~999 *BS8K is only for 8K Models. CS Digital 000~999 (4K Models do not support BS8K Digital Channels.) BS4K/8K Digital 001~499 CS4K Digital 500~999 - 8 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 9 *Only 42/48C2 model & Japan all model USB Input (3EA) EMF, DivX HD, For SVC (download) JPEG, MP3, DivX HD Ethernet Connect (1EA) Ethernet Connect - 9 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 10 UHD DEEP COLOUR ON When HDMI 4096*2160 134.86 59.94 593.407 UDTV 2160P UHD DEEP COLOUR ON When HDMI 4096*2160 135.00 60.00 UDTV 2160P UHD DEEP COLOUR ON - 10 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 11 297.00 UDTV 2160P 3840*2160 56.25 25.00 297.00 UDTV 2160P 3840*2160 67.5 30.00 297.00 UDTV 2160P 4096*2160 53.95 23.97 296.703 UDTV 2160P 4096*2160 UDTV 2160P - 11 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 12 (6) After finishing the update, it will show a pop-up below the picture. (7) Click “Yes” : Tv will be turn off and on itself - 12 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 13 “The latest version of the SW is available for your TV. Do you want to update now” (3) [Yes] : update starts. [No] : Close the pop-up, check out later - 13 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 15 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. - 15 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 16 (1-3) Unscrew the Stand Front Base Assy Fixation Screw① 3EA on the underside of the Stand Assy and separate the Stand Front Base Assy. Rear Stand Cover - 16 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 18 Separate the Back Cover by lifting the bottom of the Back Cover. (Pay attention to the upper, left, and right latch joints and gently separate them.) (2-2) Back Cover disassembly completed. Screw : 8ea Latch : 12ea - 18 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 19 (1-2) Items that must be checked after Latch is fastened. Latch : 12ea I nsert Latch : 12ea Be sure to check after fastening the Latch. - 19 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 20 Be sure to check after fastening the Latch. Latch : 12ea Check the gap between Module and Back Cover after assembling Back Cover. Screw : 8ea Latch : 12ea - 20 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 21 (2-1) Tighten Stand Front Base Assy with Stand Body Top Assy. (Screw① 3EA) (2-2) Tighten the head with a stand Assy. (Screw① 4EA) Stand Body Top Assy Stand Front Base Assy Stand Assy - 21 - Copyright © LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 24 E. Noise Circuit noise, mechanical noise F. Exterior error Exterior defect First of all, Check whether there is SVC Bulletin in GSCS System for these model. Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 25 ☞A2 & A4 Always check & record S/W Version and White Replace Main Board Re-enter White Balance value Balance value before replacing the Main Board Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 26 Revised date 2/18 ☞A9 Check and No Video/ Check Power Board Normal replace No audio 20V,12V output voltage? MAIN B/D Replace Power Board and repair parts Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 27 1. Reconnection 2. Install Booster S/W Upgrade Contact with signal distributor Normal or broadcaster (Cable or Air) Picture? Normal Picture? Replace Main B/D Close Close Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 28 Replace Main B/D error cable normal Request repair for external device/cable Check external External HDMI device and Replace Main B/D device/Cable error cable normal Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 29 Replace (Check normal operation of screen? HDMI/ Screen Main /T-con External Input, Component, normal? RGB and HDMI/DVI by connecting Jig, pattern Generator ,Set-top Box etc. Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 30 Measure voltage of each output of Power B/D Normal? Normal Replace Main B/D voltage? Normal Close Check Main ST-BY 7.8V voltage? ☞A9 Replace Power B/D Replace Power B/D Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 31 Normal Replace Main B/D Check Power B/D voltage? voltage ※ Caution Check and fix exterior Replace Power B/D of Power B/D Part Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 32 Reboot by SW down load function UNKNOWN No meaning (same as initial value) COMP_END OLED threshold voltage degradation(Compensation) completes. PNWASHDONE Power off by panel noise wash function complited. (OLED) Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 33 Screen normal of Power Board voltage Speaker off Cancel OFF Replace Power Board and repair parts Check Speaker Replace MAIN Board Disconnection disconnection Replace Speaker Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 34 (In case of Connect and check Normal External Input other external audio? signal error) device Check and fix external device Check and fix external device Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 35 (Power B/D don’t have problem) If R/C operate, Normal Close operating? Explain the customer cause is interference from light in room. Replace R/C Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 36 5sec RF Receiver ver Close is “00.00”? Replace MR22 Close Replace MR22 * If you conduct the loop at 3times, change the MR22. Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 37 Voltage? 1pin Main B/D INSTART menu ☞A14 Close Check & Repair Wifi cable connection ☞A4 Wi-Fi Mac value Close is “NG”? Change the Wifi assy Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 38 Recognition error - S/W Version HDMI/ Check and fix DVI, Optical Replace Main B/D Fix in Recognition external device/cable accordance error with technical information Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 39 In the Menu activation Connection Connection Network Connection Activation Close Close Replace Cable Replace Connection Voice Recognition Main B/D Ass’y Close Cable Close Re-Connection Close Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 40 Normal “NG”? Voltage? 18pin Main B/D INSTART menu Close Check & Repair Motion cable connection Check Motion Sensor MOTION Close “NG”? Change Motion Sensor Module Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 41 “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) Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 42 Revised date 18/18 Zoom part with Module Replace module exterior damage damage Cabinet Replace cabinet damage Remote control Replace remote control damage Stand Replace stand dent Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 43 Exchange Main Board (1) ~ (3) A-3/10 ~ A-5/10 <Appendix> Exchange Module (1) ~ (4) A-6/10 ~ A-9/10 Exchange Power Board(PSU) A-10/10 Continue to the next page Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 44 Magic Remote/WiFi operation checking method Check Voice Recognition Function activation How to use the Service remote control A18-A20 E. Etc Check items after Main B/D replacement Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 45 Check the voltage of R7632 (Blue) while turning on TV power If the voltage is low, Vx1 is locked.(OK) Low (0V) : Normal, High (3.3V) : Burnt Detect Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 46 2. Enter into White Balance. 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. Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 47 All settings  General  Programmes  Programme Tuning & settings  Manual Tuning When the signal is strong, use the attenuator (-10dB, -15dB, -20dB etc.) Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 48 Revised Content Version checking method date 1. Checking method for remote control for adjustment Version Press the IN-START with the remote control for adjustment Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 49 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. Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 50 Revised Content connection diagram date As the part connecting to the external input, check the screen condition by signal Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 51 A. Video error_Color error symptom date Revised Content Check Link Cable(VX1/EPI) reconnection condition date Check the contact condition of the Link Cable, especially dust or mis insertion. Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 52 Screen darkness to disconnection of the FFC cable pin. G color transient due to poor FFC cable CABLE G Color Excessive connection A - 1/10 Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 53 LVDS cable connection problem CABLE Color spread LVDS cable connection problem Due to foreign substance withi nLVDS CABLE Screen stop cable PIN A - 2/10 Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 54 Main IC problem Main Dark picture Dark left-side screen Top/bottom screen part Main Broken picture Picture problem due to tuner Inner side quality problem A - 3/10 Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 55 Screen spread Screen corner appears blurry Main Color Spread Color spread on the screen Main Blurry Screen Blurry picture on the screen A - 4/10 Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 56 Screen picture spread problem Screen problem No problem at the initial stage. Right-side Main During Heat run, right-side picture picture problem problem A - 5/10 Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 57 Image broken Bright spot occur due to panel defect MODULE Bright Spot Horizontal Line dim occur & MODULE Line Dim Vertical Noise occur A - 6/10 Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 58 MODULE Horizontal multiple band noise band MODULE Line defect Vertical Line defect occur MODULE Module damage Module damage caused by the module A - 7/10 Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 59 Source PCB Defect defect Panel defect MODULE Vertical band MODULE Green lighting Abnormal light emission MODULE Color step noise The difference in color A - 8/10 Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 60 (In this case, it can’t be repared. Replace Module) Picture Mura (In this case, it can’t be repared. Module Mura Replace Module) A - 9/10 Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 62 Established B. Power error _No power symptom date Revised Content Check front display LED date ST-BY condition: On or Off Power ON condition: Turn Off Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 63 AC INPUT 6. T-CON 12V Check : P202 - SET On : above 12V - SET St-by : 0V All condition meets, Power Board OK. Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 64 POWER OFF MODE checking method date <ALL MODELS> Entry method 1. Press the IN-START button of the remote control for adjustment. 2. Check the entry into adjustment item 3. Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 65 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. Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 66 3. Connect the speaker terminal and if you hear the ‘Chik~ Chik~’ sound when you touch the GND and output terminal, the speaker is normal. Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 67 2. Check the Main standby 3.5V on the terminal. 3. AS checking the IR LED light, the power is ON condition, an Analog Tester needle should move slowly, otherwise, it’s defective. Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 68 Checking order to check motion remote/wifi WOV_PDM_CLKOUT Checking order 1.Check BT/Wifi cable condition between BT/Wifi assy & Main board. 2.Check the Main 3.5V on the terminal 1 pin Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 69 Check Voice Recognition Function activation date 1. All Settings > General > AI Serivice 2. Voice Recognition Settings 3. User Agreements 4. Activation of Voice Recognition Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 70 Standard Repair Process Detail Technical Manual Error Established E. Etc symptom date Revised Content How to use the Service remote control date 1. How to access the remote control Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 71 Digital EYE function ON/OFF For some Model, access to the Test Pattern TILT Used for screen tilting change (Access to the old PDP control mode) Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 72 Connects to external input 1,2,3 COMP1,2 (Added function) Connects to Component 1,2 HDMI1,2,3,4 Connects to HDMI 1,2,3,4 (Add function) DVI (Add function) Connects to DVI Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 73 - Record the R, G, B (GAIN, Cut) value of the color temperature before main board replacement. After replacing the main board, key in the recorded value. Copyright © 2022 LG Electronics. Inc. All rights reserved. Only for training and service purposes.

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