LG 49LH6000 Service Manual

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LED TV

SERVICE MANUAL

CHASSIS : LA66H

MODEL : 49LH6000

CAUTION

BEFORE SERVICING THE CHASSIS,

READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

P/NO : MFL69375706 (1601-REV00)

Internal Use Only

49LH6000-UB

Summary of Contents for LG 49LH6000

Page 1 Internal Use Only LED TV SERVICE MANUAL CHASSIS : LA66H MODEL : 49LH6000 49LH6000-UB CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL69375706 (1601-REV00)
Page 2 BLOCK DIAGRAM .................. 17 EXPLODED VIEW .................. 26 DISASSEMBLY ..................27 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 Temp : 0 ~ 40 deg Humidity : ~ 80 % Storage Environment Temp. : -20 ~ 60 deg Humidity : ~ 85% - 6 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 7 1360*768 @60Hz 47.71 60.01 85.50 VESA (WXGA) 1920*1080 @60Hz 67.5 60.00 148.5 WUXGA(CEA 861D) FHD only( 43/49/55LH6000) FHD only (43/49/55LH66xx) - 7 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 8 HDTV 1080P 1920*1080 67.50 60.00 148.50 HDTV 1080P 3840*2160 67.5 30.00 297.00 UDTV 2160P 3840*2160 61.43 29.97 296.703 UDTV 2160P - 8 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 9 ▪ xb 00 06 [Change input source to RGB(1024*768)] ▪ ad 00 10 [Adjust 1920*1080 RGB] ▪ aa 00 90 End adj. - 9 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 10 (1) Play the LAN Port Test PROGRAM. (2) Input IP set up for an inspection to Test Program. * IP Number : 12.12.2.2. - 10 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 11 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 - 11 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 12 ⓒ Month, Year: Controlled on production line: ex) Monthly : ‘01’ -> ‘01’ Year : ‘2016’ -> ‘1A' ⓓ Model Name(Hex): LGTV ⓔ Checksum(LG TV): Changeable by total EDID data. ⓕ Vendor Specific(HDMI) - 12 - Copyright © LG Electronics. Inc. All rights reserved.
Page 13 Gain adj.(internal white pattern) Gain adj. completed Offset adj.(internal white pattern) Offset adj. completed End White Balance adj. (internal pattern disappears ) - 13 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 14 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 - 14 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 15 (2) Check the sound from the TV Set (3) Check the Sound from the Speaker or using AV & Optic TEST program (It’s connected to MSHG-600) - 15 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 16 (2) Select "Tool Option 1" and Push “OK” button. (3) Punch in the number. (Each model has their number.) - 16 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 26 Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. - 26 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 27 1. Disassemble parts Back Cover 2. Disassemble parts Back Cover Bottom <Disassemble screws> <Disassemble screws> Pull the upward. Pull the upward. - 27 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
Page 29 Always check & record S/W Version and White Replace Main B/D Re-enter White Balance value Balance value before replace the Main B/D LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 30 Video X / Check Power B/D Normal Replace Audio X 13V output Voltage Main B/D Repair or Replace Power B/D or parts LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 31 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 32 Request repair for external device/cable Check external External device HDMI device and Replace Main/T-con B/D /Cable error cable normal LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 33 RGB and HDMI/DVI by Normal Main /T-con normal? connecting Jig, pattern screen? Generator ,Set-top Box etc. - HDMI ULTRA HD Deep Color menu off LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 34 Power B/D Normal? ☞A9 ※ Normal Replace Main B/D voltage? Normal Close Check voltage? ST-BY Voltage Replace Power B/D Replace Power B/D LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 35 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 36 Screen normal voltage 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 rights reserved. Only for training and service purposes...
Page 37 (In case of External Connect and check Normal Input signal error) other external device audio? 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 38 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 rights reserved. Only for training and service purposes...
Page 39 Wafer pin Main B/D ☞A15 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 rights reserved. Only for training and service purposes...
Page 40 - 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 41 “Part related to nose” in the Owner’s 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 42 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 43 Check Link Cable (EPI) reconnection A. Video error_ Color error condition Exchange Module (1) A-1/2 <Appendix> Exchange Module (2) A-2/2 LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 44 Voltage and speaker checking method when there is no audio Remote control operation checking method D. Function error Wi-Fi operation checking method LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 45 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 rights reserved. Only for training and service purposes...
Page 46 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 47 Select Channel 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 48 A. Video error_Video error, video lag/stop Error Symptom date Revised Content Version checking method date <ALL MODELS> 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 49 2. After measuring each voltage from power supply, finally replace the MAIN BOARD. 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 50 Revised Content connection diagram (1) 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 51 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 52 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 53 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 54 B. Power error _No power Error 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 55 Check the Power output voltage and St-by voltage date Chech the DC 13V. Power PDIM #2 ON/OFF D13.2V D13.2V D13.2V A13.2V A13.2V PDIM #1 LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 56 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 57 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 58 After connect speaker and contact the output terminal of the speaker with GND, if there is sound ouput noise, we conclude the speaker works well. LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...
Page 59 KEY1 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 60 ① +3.4V_ST KEY2 KEY1 Checking order Check the IR cable condition Check the Wifi Cable condition Check the voltage 3.4V_WIFI on P4101 LGE Internal Use Only Copyright 2016 LG Electronics Inc. All rights reserved. Only for training and service purposes...

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LG 49LH6000 Service Manual

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