LG 65UH950V Service Manual

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LED TV

SERVICE MANUAL

CHASSIS : UD62M

MODEL : 55/65UH950V

CAUTION

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

P/NO : MFL69498101 (1603-REV00)

Internal Use Only

55/65UH950V-ZA

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Summary of Contents for LG 65UH950V

Page 1 Internal Use Only LED TV SERVICE MANUAL CHASSIS : UD62M MODEL : 55/65UH950V 55/65UH950V-ZA CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL69498101 (1603-REV00)
Page 2 ADJUSTMENT INSTRUCTION ............... 14 BLOCK DIAGRAM ................... 25 EXPLODED VIEW .................. 35 DISASSEMBLY ..................36 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 SAT10&7 68.5E, INTELSAT15 85.2E, INTELSAT1R 50.0W, INTEL- SAT903 33.5W, INTELSAT904 60.0E, NILESAT 7.0W, NSS12 57.0E, THOR 0.8W, TURKSAT 42.0E, YAMAL201 90.0E, OTHER - 6 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 7 USB (3EA) EMF, DivX HD, For SVC (download) JPEG, MP3 Ethernet Connect(1EA) Ethernet Connect PCMCIA Card slot (1EA) PCMCIA slot - 7 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 8 HDTV 1080P 1920*1080 56.25 50.00 148.5 HDTV 1080P 1920*1080 67.432 59.94 148.350 HDTV 1080P 1920*1080 67.5 60.00 148.50 HDTV 1080P - 8 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 9 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 - 9 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 10 62.5 17,18 Frame packing Secondary(SDTV 576P) Secondary(SDTV 576I) Frame packing Top-and- 720*576 15.625 Secondary(SDTV 576I) Bottom Side-by-side(half) Secondary(SDTV 576I) - 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) 640*350 720*400 2D to 3D, Others 640*480 Side by Side(half), 800*600 Top & Bottom 1152*864 - 11 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 12 2D to 3D, Side by Side(Half), Top & Bottom Over 2160P 2D to 3D, Side by Side(Half), Top & Bottom - 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 Single Frame Frame Packing 2D to 3D Sequential - 13 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 14 DETECT -> MAC -> CI -> Widevine -> ESN -> HDCP1.4 -> HDCP 2.0 -.Play : Press Enter key -.Result: Ready, Test, OK or NG -.Printer Out (MAC Address Label) - 14 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 15 (4) Check the model name Instart menu →Factory name displayed (5) Check the Diagnostics (DTV country only) →Buyer model displayed - 15 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 16 Monthly : ‘01’ → ‘01’, Year : ‘2016’ → ‘1A’ Transmission [A][l][][Set ID][][20][Cr] [O][K][x] or [N][G] ⓓ Model Name(Hex): LGTV ⓔ Checksum(LG TV): Changeable by total EDID data. ⓕ Vendor Specific(HDMI) 3.7.2. check the menu on in-start 4.2.4.1. EDID - DTS EDID (3D)
Page 17 (1) HDMI Deep Color OFF (C/S: 0x9F, 0XD7) (2) HDMI Deep Color ON (C/S: 0x9F, 0x2D) # HDMI3 (1) HDMI Deep Color OFF (C/S: 0x9F, 0XE7) - 17 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 18 (2) HDMI Deep Color ON (C/S: 0x9F, 0x56) (2) HDMI Deep Color ON (C/S: 0x9F, 0x66) # HDMI3 (1) HDMI Deep Color OFF (C/S: 0x9F, 0XF0) - 18 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 19 - PCM EDID (3D) # HDMI1 (1) HDMI Deep Color OFF (C/S: 0x9F, 0X82) (2) HDMI Deep Color ON (C/S: 0x9F, 0xC8) - 19 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 20 Gain adj.(internal white pattern) Gain adj. completed Offset adj.(internal white pattern) Offset adj. completed End White Balance adj. (internal pattern disappears) - 20 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 21 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 - 21 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 22 G gain is more than 255 , G gain can adjust less than 192 ) and change the others ( R/G Gain ). 3) Adjustment mode : mode – Cool - 22 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 23 ▪ After final inspection, press In-Stop key of the Adj. R/C and check that the unit goes to Stand-by mode. - 23 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 24 (1) RF input: Mono, 1 KHz sine wave signal, 100 % Modulation (2) CVBS, Component: 1 KHz sine wave signal 0.5 Vrms - 24 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 35 Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. - 35 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 36 1. Disassemble Stand - Disassemble Stand Cover - Push up Cable Cover and Pull the Cable Cover - Disassemble Screw (4EA) - 36 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 37 - Pull the Back Cover Bracket Holing Power Cable upward with using snap. - Change Position and Pull up Back Cover - 37 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 39 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 right reserved. Only for training and service purposes...
Page 40 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 right reserved. Only for training and service purposes...
Page 41 Normal voltages of Power No Video/ replace voltage? Board ( 18V) No audio MAIN B/D Replace Power Board and repair parts LGE Internal Use Only Copyright ⓒ 2016 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 42 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 right reserved. Only for training and service purposes...
Page 43 Replace Main/T-con B/D Deep Color menu ※ All Settings  General  HDMI ULTRA HD Deep Color  On/Off Menu Off and Re-Check LGE Internal Use Only Copyright ⓒ 2016 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 44 - HDMI ULTRA HD Deep Color menu off ※ All Settings  General  HDMI ULTRA HD Deep Color  On/Off LGE Internal Use Only Copyright ⓒ 2016 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 45 Power B/D Normal? ☞A18 ※ Normal Replace Main B/D voltage? Normal Close Check ST-BY Voltage voltage? Replace Power B/D Replace Power B/D LGE Internal Use Only Copyright ⓒ 2016 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 46 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 right reserved. Only for training and service purposes...
Page 47 CORRECT output Set correct output Replace Power Board and repair parts Check Speaker Replace MAIN Board Disconnection disconnection Replace Speaker LGE Internal Use Only Copyright ⓒ 2016 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 48 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 right reserved. Only for training and service purposes...
Page 49 Replace Power B/D or Replace Main B/D 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 right reserved. Only for training and service purposes...
Page 50 * INSTART MENU13.RF remote control Test  Firmware download Close * If you conduct the loop at 3times, change the MR15R. LGE Internal Use Only Copyright ⓒ 2016 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 51 Main B/D ☞A24 Check & Repair Close 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 right reserved. Only for training and service purposes...
Page 52 P4200 12,13pin Main B/D ☞A25 Check & Repair Close Camera cable connection ☞A4 Camera Ver. is “NULL”? Close Change the Camera assy LGE Internal Use Only Copyright ⓒ 2016 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 53 - 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 right reserved. Only for training and service purposes...
Page 54 “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 right reserved. Only for training and service purposes...
Page 55 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 right reserved. Only for training and service purposes...
Page 56 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 Continue to the next page LGE Internal Use Only Copyright ⓒ 2016 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 57 Motion Remote operation checking method D. Function error Wi-Fi operation checking method Camera operation checking method Not Used LGE Internal Use Only Copyright ⓒ 2016 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 58 After turning on the power and disassembling the case, check with the naked eye, whether you can see light from locations. LGE Internal Use Only Copyright ⓒ 2016 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 59 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. re-enter the value after replacing the MAIN BOARD. LGE Internal Use Only Copyright ⓒ 2016 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 60 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 right reserved. Only for training and service purposes...
Page 61 <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 right reserved. Only for training and service purposes...
Page 62 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 right reserved. Only for training and service purposes...
Page 63 Content connection diagram (1) 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 right reserved. Only for training and service purposes...
Page 64 Check Link Cable (LVDS) reconnection condition date <ALL MODELS> Check the contact condition of the Link Cable, especially dust or mis insertion. LGE Internal Use Only Copyright ⓒ 2016 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 65 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 right reserved. Only for training and service purposes...
Page 66 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 right reserved. Only for training and service purposes...
Page 67 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 right reserved. Only for training and service purposes...
Page 68 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 right reserved. Only for training and service purposes...
Page 69 Appendix : Exchange the Module (1) Press damage Crosstalk 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 right reserved. Only for training and service purposes...
Page 70 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 right reserved. Only for training and service purposes...
Page 71 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 right reserved. Only for training and service purposes...
Page 72 Check power input voltage and ST-BY 3.5V date Check the DC 18V 28Pin map (LPB) PWR-On P-DIM2 DRV-ON P-DIM1 SCLK VSINC LGE Internal Use Only Copyright ⓒ 2016 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 73 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 right reserved. Only for training and service purposes...
Page 74 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 right reserved. Only for training and service purposes...
Page 75 ② Measure the 24V input voltage supplied from Power Board (If there is no input voltage, remove and check the connector) ③ Check the contact condition of cable or connector LGE Internal Use Only Copyright ⓒ 2016 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 76 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 right reserved. Only for training and service purposes...
Page 77 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 right reserved. Only for training and service purposes...

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