LG 60UU640C Service Manual

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LED TV

SERVICE MANUAL

CHASSIS : UD8BC

MODEL : 60UU640C

CAUTION

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

P/NO : MFL70721105 (1810-REV00)

CONFIDENTIAL

60UU640C-ZA

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Summary of Contents for LG 60UU640C

Page 1 LED TV SERVICE MANUAL CHASSIS : UD8BC MODEL : 60UU640C 60UU640C-ZA CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL70721105 (1810-REV00) Copyright © 2018 LG Electronics Inc. All rights reserved. Only training and service purposes.
Page 2 SPECIFICATION ..................6 SOFTWARE UPDATE ................10 BLOCK DIAGRAM ................. 11 EXPLODED VIEW .................. 12 DISASSEMBLY GUIDE ................13 TROUBLE SHOOTING GUIDE ..........APPENDIX - 2 - Copyright © LG Electronics. Inc. All rights reserved. Only for 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 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. Only for training and service purposes.
Page 6 , INTELSAT10&7 68.5E , INTELSAT15 85.2E , INTELSAT1R 50.0W, INTELSAT903 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. Only for training and service purposes.
Page 7 DVB-S (QPSK) : 2 ~ 45Msymbol/s - viterbi DVB-S mode : 1/2, 2/3, 3/4, 5/6, 7/8 DVB-S2 mode : 1/2, 2/3, 3/4, 3/5, 4/5, 5/6, 8/9, 9/10 - 7 - Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 8 296.703 UDTV 2160P 4096*2160 24.00 UDTV 2160P 4096*2160 56.25 25.00 UDTV 2160P 4096*2160 61.43 29.97 296.703 UDTV 2160P 4096*2160 67.5 30.00 UDTV 2160P - 8 - Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 9 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 - 9 - Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 10 1) Push "ADJ" key in service remote controller. 2) Select "Tool Option 1" and Push “OK” button. 3) Punch in the number. (Each model has their number.) - 10 - Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 12 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. - 12 - Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 13 Push the cover rear by one hand and pull it upward by another hand. It is easy to pull it if you put your finger in the groove. 2. Detach Tape Detach tape - 13 - Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 14 3. Remove all sort of cable. 4. IR assy, Wi-Fi PCB assy disassembly Disassemble screw(1ea) and Detach Hook Remove cable from holder IR Guide Hole - 14 - Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 18 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 © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 19 ☞A4 & A2 Always check & record S/W Version and White Replace Main Board Re-enter White Balance value Balance value before replacing the Main Board Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 20 ☞A18 Check various Check and No Video/ voltages of Power Normal replace No audio Board (13.2V…) voltage? MAIN B/D Replace Power Board and repair parts Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 21 1. Reconnection 2. Install Booster S/W Upgrade Normal Contact with signal distributor Picture? or broadcaster (Cable or Air) Normal Picture? Replace Main B/D Close Close Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 22 /Cable device and error normal cable Request repair for external device/cable Check external External device HDMI device and Replace Main/T-con B/D /Cable error cable normal Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 23 Replace screen? Screen (Check normal operation of Main /T-con External Input, Component, normal? RGB and HDMI/DVI by connecting Jig, pattern Generator ,Set-top Box etc. Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 24 Measure voltage of each output of Power B/D Normal? Normal Replace Main B/D voltage? Normal Check ST-BY 3.5V Close voltage? ☞A18 Replace Power B/D Replace Power Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 25 Error? Normal? Abnormal Check for all 3- phase Replace Power B/D power out Abnormal Fix A/C cord & Outlet and check each 3 phase out Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 26 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 © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 27 13.2V of Power Screen normal voltage Speaker off Board Cancel OFF Replace Power Board and repair parts Check Replace MAIN Board Disconnection Speaker disconnection Replace Speaker Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 28 (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 © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 29 Replace Main B/D (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 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 30 Replace MR18 Close Down load the Firmware * If you conduct the loop at 3times, change the M4. * INSTART MENU14.RF Remocon Test3. Firmware download Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 31 INSTART menu Voltage? 1pin Main B/D ☞A24 Close Check & Repair Wifi cable connection ☞A4 Wi-Fi Mac value is “NG”? Close Change the Wifi assy Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 32 Recognition error - S/W Version HDMI/ Check and fix DVI, Optical Replace Main B/D Fix in external device/cable Recognition error accordance with technical information Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 33 “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 © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 34 Revised date 16/16 Zoom part with Module Replace module exterior damage damage Cabinet Replace cabinet damage Remote Replace remote control control damage Stand Replace stand dent Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 35 Exchange Module (1) ~ (3) Inverter/ Module A-8/11 A-9/11 ~ Exchange T-Con (1) ~ (2) A-10/11 Exchange Power Board(PSU) A-11/11 Continue to the next page Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 36 Check items after Main B/D replacement E. Etc Adjustment Test pattern – ADJ Key How to use JIG (Power B/D Diganostic Smart Jig Multi Gender Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 37 Check LCD back light with naked eye Content date After turning on the power and disassembling the case, check with the naked eye, whether you can see light from locations. Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 38 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 © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 39 TUNER input signal strength checking method Content date <ALL MODELS>  Advanced Channels Channel Tuning Manual Tuning When the signal is strong, use the attenuator (-10dB, - 15dB, -20dB etc.) Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 40 Version checking method Content date <ALL MODELS> 1. Checking method for remote control for adjustment Version Press the IN-START with the remote control for adjustment Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 41 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 © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 42 Revised Content connection diagram (1) date <ALL MODELS> As the part connecting to the external input, check the screen condition by signal Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 43 A. Video error_Color error symptom date Revised Content Check Link Cable(Vx1) reconnection condition date Check the contact condition of the Link Cable, especially dust or mis insertion. Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 44 Screen darkness to disconnection of the FFC cable pin. G color transient due to poor FFC cable CABLE G Color Excessive connection A - 1/11 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 45 LVDS cable connection problem CABLE Color spread LVDS cable connection problem Due to foreign substance withi nLVDS CABLE Screen stop cable PIN A - 2/11 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 46 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 - 3/11 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 47 Screen spread Screen corner appears blurry Main Color Spread Color spread on the screen Main Blurry Screen Blurry picture on the screen A - 4/11 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 48 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 - 5/11 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 49 BLU internal foreign matter inflow MODULE Internal matter 6 block image broken MODULE Image broken MODULE Image broken Screen sync signal broken A - 6/11 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 50 BLU Vertical spreading on cube screen in no MODULE Vertical smear signal MODULE Over color Screen contour part brightly Over color A - 7/11 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 51 Center of the screen 1 block dark MODULE Screen darkness MODULE Vertical bar Center Vertical Bar Darkness at the MODULE bottom of the MODULE internal BLU breakage screen A - 8/11 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 53 The entire screen is dark and bit noise T-CON Image Broken occurs The entire screen is dark and bit noise T-CON Image Broken occurs A - 10/11 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 55 Established 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 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 56 6. LED Indicator Check - Normal condition : Not blank - Abnormal condition : Blank 1~9 times SK100 (AC input) All condition meets, Power Board OK. Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 57 6. LED Indicator Check - Normal condition : Not blank - Abnormal condition : Blank 1~9 times SK100 (AC input) All condition meets, Power Board OK. Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 58 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 © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 59 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 © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 60 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. Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 61 2.Check the standby 3.5V on the terminal 16 pin (③) 3.AS checking the Pre-Amp(IR LED light) , the power is in ON condition, an Analog Tester needle should move slowly, otherwise, it’s defective. Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 62 Checking order to check motion remote/wifi KEY1_JACK Checking order 1.Check BT/Wifi cable condition between BT/Wifi assy & Main board. 2.Check the 3.5V on the terminal 22 Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 63 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 © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 64 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 © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 65 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 © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 66 - 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 © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes.
Page 67 You can view 6 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!) Copyright © 2018 LG Electronics. Inc. All rights reserved. Only for training and service purposes.

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