LG 55UH6550 Service Manual

Chassis : ua63j

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LED TV

SERVICE MANUAL

CHASSIS : UA63J

MODEL : 55UH6550

CAUTION

BEFORE SERVICING THE CHASSIS,

READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

P/NO : MFL69413303 (1601-REV00)

Internal Use Only

55UH6550-UB

Summary of Contents for LG 55UH6550

Page 1 Internal Use Only LED TV SERVICE MANUAL CHASSIS : UA63J MODEL : 55UH6550 55UH6550-UB CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL69413303 (1601-REV00)
Page 2 EXPLODED VIEW .................. 31 ASSEMBLY / DISASSEMBLY ..............32 SCHEMATIC CIRCUIT DIAGRAM ........... 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 Rear (1EA), USB Input(3EA) EMF, DivX HD, For SVC (download) Side(1)/Rear(2) :JPEG, MP3, DivX HD (Exception, UA65S: USB 1EA) - 6 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 7 16.7 M (8-bit) Only FHD 60Hz models 1.07G colors (8-bit+FRC) V580DJ2-KS5 1.067G V500DJ2-KS5 Surface Treatment Hard coating (2H), Anti-glare - 7 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 8 297.00 Only UD Model 3840*2160 297.00 Only UD Model 4096*2160 53.95 23.97 Only UD Model 4096*2160 Only UD Model - 8 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 9 4096*2160 61.43 29.97 296.703 UDTV 2160P 4096*2160 67.5 30.00 UDTV 2160P 4096*2160 59.94 UDTV 2160P 4096*2160 60.00 UDTV 2160P - 9 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 10 29.976 / 30.00 148.35/148.5 Side-by-side(Full) (HDTV 1080P) 67.43 / 67.5 59.94 / 60 148.35/148.50 Top-and-Bottom Primary(HDTV 1080P) Side-by-side(half) Secondary(HDTV 1080P) - 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), Port3 Only 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 3D input proposed mode 1080P 33.75 Side by Side(Half), Top & Bottom, Checker Board, MPO(Photo) 2160p 67.5 MPO(Photo), JPS(Photo) - 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 ▪ xb 00 06 [Change input source to RGB(1024*768)] ▪ ad 00 10 [Adjust 1920*1080 RGB] ▪ aa 00 90 End adj. - 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 C. Serial number D/L must be conformed when it is produced in production line, because serial number D/L is mandatory by D-book 4.0 - 16 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 17 : ‘2016’ -> ‘1A' / HDMI3 / HDMI4 are Writing and display OK or NG. ⓓ Model Name(Hex): LGTV For HDMI EDID ⓔ Checksum(LG TV): Changeable by total EDID data. DVI-D to HDMI or HDMI to HDMI ⓕ Vendor Specific(HDMI) 5.2.4.1. EDID...
Page 20 00 7C 2D ONLY HDMI1 0x9F, 0x11 0x9F, 0XB6 HDMI2 0x9F, 0x01 0x9F, 0XA6 HDMI3 0x9F, 0xF1 0x9F, 0x96 - 20 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 21 RS -232C Pat t ern Generat o r Signal Source * If TV internal pattern is used, not needed - 21 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 22 Gain adj.(internal white pattern) Gain adj. completed Offset adj.(internal white pattern) Offset adj. completed End White Balance adj. (internal pattern disappears ) - 22 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 23 Coordinate Mode Temp △uv Cool 0.271±0.002 0.270±0.002 13000K 0.0000 Medium 0.286±0.002 0.289±0.002 9300K 0.0000 Warm 0.313±0.002 0.329±0.002 6500K 0.0000 - 23 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 24 ▪ After final inspection, press In-Stop key of the Adj. R/C and check that the unit goes to Stand-by mode. - 24 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 25 (2) Select "Tool Option 1" and Push “OK” button. (3) Punch in the number. (Each model has their number.) - 25 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 31 Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. - 31 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 32 (When assembling the B / C f rom the bottom of the assembled rear upper assembly) (CABLE part holding insert) Insert the HARNESS 1)FFC 8P -> IR “A” 2)FFC 10P -> IR J1 - 32 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 33 4 ~ 7Kgf.cm 1. Pull the upward. 5. Pull the upward at point of picture. 2. Rotate 180˚ and disassemble cables - 33 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 34 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR M16 Symbol A THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 35 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR M16 Symbol B THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 36 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR M16 Symbol C THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 37 2015.02.09 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR M16 DDR3-M0 THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 38 2016.02.09 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR M16 DDR3-M1 THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 39 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR VCC & GND THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 40 FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 41 FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR Panel Power THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 42 FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 43 FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 44 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. M16 UHD-mid Power LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 45 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. M16 UHD-mid Power LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 46 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. M16 UHD-mid Power LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 47 FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 48 15/06/13 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR M16_0.9V Core THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 49 15/06/13 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR M16_0.9V CPU THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 50 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR M16_0.9V DDR & C4TX THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 51 FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS 2015.06.27 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR MICOM_NEC THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 52 FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR HDMI SYMBOL THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 53 2015.02.11 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR HDMI RX THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 54 2015-01-10 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR HDMI THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. HDMI LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 55 2015.02.16 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR AV JACK THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 56 FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 57 FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS 2015.02.09 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR IR/KEY/WIFI/BT THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 58 FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR JACK_USB2_2.0 THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 59 FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR USB 2_2.0 THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 60 FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR JACK_USB3_2.0 THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 61 FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR USB3_2.0 THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 62 FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR ETHERNET JACK THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 63 FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 64 FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR NTP AMP THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 65 FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 66 FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR HP JACK THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 67 FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR HEADPHONE AMP THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 68 FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS TUNER 2015.04.20 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 69 FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS TU_SYMBOL 2012.09.14 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 70 FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR +1.2V_DEMOD THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 71 FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR RS232C THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 72 FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 73 FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 74 FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 75 FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 76 2015.02.09 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR eMMC 5.0 THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 77 FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR SMD GASKET THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 80 Circuit noise, mechanical noise F. Exterior error Exterior defect First of all, Check whether there is SVC Bulletin in GSCS System for these model. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 81 Always check & record S/W Version and White Replace Main Board Re-enter White Balance value Balance value before replacing the Main Board LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 82 Check and Normal voltages of Power No Video/ replace voltage? Board ( 13V) No audio MAIN B/D 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 83 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 84 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 85 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 86 Measure voltage of each output of Power B/D Normal? Normal Replace Main B/D voltage? Normal Close Check 13V(For STBY 3.3V) voltage? ☞A18 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 87 Power off by unknown status except listed case "POWEROFF_ABNORMAL1" Power off by abnormal status except CPU trouble Abnormal "POWEROFF_CPUABNORMAL" Power off by CPU Abnormal LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 88 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 89 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 90 (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 91 Down load the Firmware * If you conduct the loop at 3times, change the M4. * INSTART MENU14.RF Remocon Test3. Firmware download LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 92 Voltage? 1pin Main B/D Close Check & Repair Wifi cable connection ☞A4 Wi-Fi Mac value is “NG”? Close Change the Wifi assy LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 93 Check the Camera Ver. Reconnect the Normal Replace INSTART menu is “NULL”? operation? Camera module Main B/D Close Change the Camera module LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 94 - S/W Version HDMI/ Check and fix DVI, Optical Replace Main B/D 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 95 “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 96 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 97 A-2/5 <Appendix> Defected Type caused by T-Con/ Exchange Power Board (PSU) A-3/5 Inverter/ Module Exchange Module (1) A-4/5 Exchange Module (2) A-5/5 LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 98 Voltage and speaker checking method when there is no audio Remote control operation checking method D. Function error Motion Remote, Wi-Fi operation checking method LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 99 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. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 100 Channel Tuning  Manual Tuning  Antenna DTV, Cable DTV Signal Strength is too strong : Use attenuator (-10dB, -15dB, -20dB etc.) Signal Strength is too weak : Use Signal Booster LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 101 Content date <ALL MODELS> 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 102 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 103 Revised Content connection diagram date <ALL MODELS> 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 104 Check Link Cable (LVDS) reconnection condition date <58UH63> P801 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 105 Content Check Link Cable (LVDS) reconnection condition date <43UH65> 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 106 Check Link Cable (LVDS) reconnection condition date <43UH75> P801 P802 P201 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 107 You can view 8 types of patterns using the ADJ Key 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) LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 108 Solder defect, CNT Broken Solder defect, CNT Broken T-Con Defect, CNT Broken Abnormal Power Section Solder defect, Short/Crack Solder defect, Short/Crack A - 1/5 LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 109 Abnormal Power Section Solder defect, Short/Crack Abnormal Display Fuse Open, Abnormal power section Solder defect, Short/Crack Noise GRADATION GRADATION A - 2/5 LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 110 Appendix : Exchange Power Board (PSU) No Light Dim Light Dim Light Dim Light No picture/Sound Ok A - 3/5 LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 111 Appendix : Exchange the Module (1) Crosstalk Press damage Crosstalk Press damage Press damage Un-repairable Cases In this case please exchange the module. A - 4/5 LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 112 Un-repairable Cases In this case please exchange the module. Horizontal Block Gate TAB IC Defect Gate TAB IC Defect A - 5/5 LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 113 B. Power error _No power symptom date Revised Content Check front Power Indicator 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 114 PWR-On P-DIM2 13.2V 13.2V 13.2V 13.2V 13.2V P-DIM1 DRV-On SCLK VSINC 12Pin map (LPB) PWR-On P-DIM2 13.2V 13.2V 13.2V 13.2V 13.2V P-DIM1 LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 115 <ALL MODELS> Entry method 1. Press the IN-START button of the remote control for adjustment 2. Check the entry into adjustment item 3` LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 116 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 117 ② Measure the 13.2V input voltage supplied from Power Board (If there is no input voltage, remove and check the connector) ③ Check the sound LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 118 “B” Checking order 1. Check IR cable condition between IR & Main board. 2. Check the st-by 3.5V on the pin 18 LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 119 “B” Checking order 1. Check Motion cable condition between Motion assy & Main board. 2. Check the 3.3V on the pin 1. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 120 21 GND Checking order 1. Check Motion cable condition between Motion assy & Main board. 2. Check the 3.3V on the pin 1. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...

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