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LG Electronics Inc. All rights reserved.

Only for training and service purposes.

DISASSEMBLY GUIDE (SET)

* When assembling the back cover, cover it from the bottom or cover it horizontally

- Back Cover Work Order

(1) Back Cover (1) + Module Bottom Assembly

(2) Screw (2) Assembly

(3) Rear AV Screw (3) Assembly

* Do not wear items that may damage the appearance of the product

* SCREW TORQUE : 5 ~ 7Kgf.cm

3

1

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

* Insert your finger in the left/right triangle hole (indicated by the red circle) to disassemble the

back cover

-

Back Cover Work Order

(1) Back Cover Screw disassemble

(2) Insert the finger of the back cover bottom section triangle hole and disassemble it

* Do not wear items that may damage the appearance of the product

* SCREW TORQUE : 5 ~ 7Kgf.cm

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Содержание 65UT640S0UA

Страница 1: ... 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 Copyright 2019 LG Electronics Inc A...

Страница 2: ...ghts reserved Only for training and service purposes CONTENTS CONTENTS 2 SAFETY PRECAUTIONS 3 SERVICING PRECAUTIONS 4 SPECIFICATION 6 SOFTWARE UPDATE 11 BLOCK DIAGRAM 13 EXPLODED VIEW 14 DISASSEMBLY GUIDE 16 TROUBLE SHOOTING GUIDE APPENDIX ...

Страница 3: ...he set is safe to operate without damage of electrical shock Leakage Current Cold Check Antenna Cold Check With the instrument AC plug removed from AC source connect an electrical jumper across the two AC plug prongs Place the AC switch in the on position connect one lead of ohm meter to the AC plug prongs tied together and touch other ohm meter lead in turn to each exposed metallic parts such as ...

Страница 4: ...c charge on your body by touching a known earth ground Alter natively obtain and wear a commercially available discharging wrist strap device which should be removed to prevent poten tial shock reasons prior to applying power to the unit under test 2 After removing an electrical assembly equipped with ES devices place the assembly on a conductive surface such as aluminum foil to prevent electrosta...

Страница 5: ...oints of the two original leads If they are not shiny reheat them and if necessary apply additional solder Fuse and Conventional Resistor Removal Replacement 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 3 Solder the connections CAUTION Maintain original spacing between the replaced component...

Страница 6: ...mance LGE TV test method followed 2 Demanded other specification Safety CE IEC specification EMC CE IEC 4 General Specification No Item Specification Remarks 1 Market North America 2 Broadcasting system ATSC NTSC M 64 256 QAM 3 Available Channel VHF 2 13 UHF 14 69 DTV 2 69 CATV 1 135 CADTV 1 135 4 Receiving system Digital ATSC 64 256 QAM Analog NTSC M 5 Video Input NTSC M Rear Refer 5 6 Component ...

Страница 7: ...e 1EA Rear 0EA UT640S UT340H UT570H 75UT770H 2 Side 2EA Rear 0EA LT662V UT670H 49 55 65UT770H 8 RS 232C IN Control Service 1 D SUB 9PIN Type ALL Models except for 75UT770H Phone Jack type 75UT770H 9 Game Control M P I 1 Game Conteol M P I UT570H UT670H UT770H M P I ET960H UT340H LT662V 10 TV LINK CFG 1 UT570H UT670H UT770H 11 RJP 1 UT570H 12 Speaker Out Line Out 1 ALL Models except for UT340H UT64...

Страница 8: ...0 297 UDTV 2160P 14 3840 2160 112 5 50 594 UDTV 2160P 15 3840 2160 135 60 594 UDTV 2160P 16 3840 2160 225 100 1188 UDTV 2160P 17 3840 2160 270 120 1188 UDTV 2160P 18 4096 2160 53 95 23 97 296 7 UDTV 2160P 19 4096 2160 54 24 297 UDTV 2160P 20 4096 2160 56 25 25 297 UDTV 2160P 21 4096 2160 67 5 30 297 UDTV 2160P 22 4096 2160 112 5 50 594 UDTV 2160P 23 4096 2160 135 60 594 UDTV 2160P 24 4096 2160 225...

Страница 9: ...80P 16 1920 1080 27 24 63 36 HDTV 1080P 17 1920 1080 33 71 29 97 79 12 HDTV 1080P 18 1920 1080 33 75 30 79 2 HDTV 1080P 19 1920 1080 56 25 50 148 5 HDTV 1080P 20 1920 1080 67 43 59 94 148 35 HDTV 1080P 21 1920 1080 67 5 60 148 5 HDTV 1080P 22 1920 1080 112 5 100 297 HDTV 1080P 23 1920 1080 134 86 119 88 296 7 HDTV 1080P 24 1920 1080 135 120 297 HDTV 1080P 25 3840 2160 53 95 23 98 296 7 UDTV 2160P ...

Страница 10: ...680 4320 132 30 1188 8K 8K Model Only 52 7680 4320 220 50 2376 8K 8K Model Only 53 7680 4320 263 74 59 94 2376 8K 8K Model Only 54 7680 4320 264 60 2376 8K 8K Model Only No Resolution H freq kHz V freq kHz Pixel clock MHz Proposed 1 720 480i 15 73 59 94 13 5 SDTV DVD 480I 525I 2 720 480i 15 75 60 13 514 SDTV DVD 480I 525I 3 720 576i 15 625 50 13 5 SDTV DVD 576I 625I 50Hz 4 720 480p 31 47 59 94 27 ...

Страница 11: ...button 4 TV is updating 5 After finished the update below Pop up appears then TV will reboot automatically 6 Check the updated SW Version and Tool Option If the software version on the USB device is equal to or lower than the version currently installed on the TV it cannot be updated in User Mode 2 Expert Mode 1 Menu General press 7 consecutively by remote control until TV Manager application is l...

Страница 12: ...a Coning make and apply clone file Image Download Image Download downloads Boot Logo Image Apps Background Image s and Hotel Directory Image s at once Icon Download Icon Download downloads Hotel Icon on Portal Website Shortcut and Input Shortcut images at once Video Download Video Download downloads Hotel Video and Welcome Video files at once Software Update download software firmware Micom or CPU...

Страница 13: ...2S I2C_SDA_0_AMP1 AUD_SCK AUD_LRCH EPI CABLE 60p x 2EA USB Ext SPK AUDA_OUTL R PANEL Side Rear Demod I2C_4_NVRAM Audio AMP NTP7519 CVBS AUAD L R AV1_CVBS_IN AUAD_L R_CH2_IN SPEAKER Ext SPK AMP AUDA_OUTL R PMIC SUB PMIC I2C_SDA_BACKEND I2C_CH2 GMA VCOM VDD COM with PTC USB update MICOM TI PTC UART_1 IR IR Ass y IR KEY KEY LED REMOTE_PTC_TX RX EEPROM 64Kb HDMI LAN HUB CHIP MICOM TI UART_1 UART_0 UAR...

Страница 14: ...se parts are identified by in the EXPLODED VIEW 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 IMPORTANT SAFETY NOTICE 400 540 200P LV1 521 570 800 530 121 HP1 HS1 HW1 A10 700 901 120 500 200A 820 LV2 902 951 952 571 ...

Страница 15: ...hts reserved Only for training and service purposes MRC use only MRC Module Repair Center IMPORTANT NOTICE EXPLODED VIEW MODULE POL Front Panel Ass y POL Rear Optical Sheet Rear Side 200PPF 200PPR 200P 200PC 200SL1 200PF 200SL2 200SR1 200SR2 ...

Страница 16: ...ar AV Screw 3 Assembly Do not wear items that may damage the appearance of the product SCREW TORQUE 5 7Kgf cm 3 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 Insert your finger in the left right triangle hole indicated by the red circle to disassemble the back cover Back Cover Work Order 1 Back Cover Screw disassemble 2 Insert the finger of the back cover bottom section triangle hole and disassemble it Do not...

Страница 17: ...ase Top Step 1 Main PSU SPK Wifi IR Stand Bracket A B disassemble Step 2 S PCB Cover Shield L R disassemble Step 3 LCM reverse and disassemble Source PCB from Holder Step 4 Case Top Screw disassemble back side screw and Case Top disassemble Rear Sliver screw 7ea top 9ea side L 5ea side R 5ea down side 9ea down Top Side ...

Страница 18: ...l disassemble Step 6 Guide Panel disassemble Step 7 Optical Sheet disassemble DS Prism middle Prism down DP Step 8 DPS LED Fixer disassemble Reflector Sheet disassemble rotate DPS 12ea push LED fixer in back 5ea Move the FFC to the panel use the tape top 7ea side L 4ea side R 4ea down 13ea down Top Side ...

Страница 19: ...h the Double Tape 1 Attach the Double Tape in Guide Line of Cover Bottom 4ea 2 Remove the protect film of Double Tape Step 2 Attach the LED Array 1 Attach the LED Array to the round hole on Cover Bottom embo 2 Press the LED Array on the surface of Cover Bottom 3 Connect the CNT to the LED Array C Bottom Guide Line Finish the Attached Double Tape 5ea NG OK Finish the Attached LED Array 5ea Inch 43 ...

Страница 20: ...TROUBLE SHOOTING GUIDE Copyright 2019 LG Electronics Inc All rights reserved Only for training and service purposes ...

Страница 21: ...dio SIZE 245x174 1 2 Main SoC 5 Power from PSU PANEL PANEL 1 DDR Memory 4 3 Micom Audio AMP 5 EMMC 2 3 4 IR Control WIFI Copyright 2019 LG Electronics Inc All rights reserved Only for training and service purposes ...

Страница 22: ...Interconnection 1 2 3 4 5 1 2 3 4 Main PCB PSU PANEL FFC Cable IR Local Key 5 SPEAKER 5 Copyright 2019 LG Electronics Inc All rights reserved Only for training and service purposes ...

Страница 23: ...en on off while viewing power auto on off 7 8 C Audio error No audio Normal video 8 9 Wrecked audio discontinuation noise 9 10 D Function error Remote control Local switch checking 10 11 External device recognition error 11 12 E Noise Circuit noise mechanical noise 12 13 F Exterior error Exterior defect 13 14 G Commercial function error MPI IR Out error 14 First of all Check whether there is SVC B...

Страница 24: ...arts End Always check record S W Version and White Balance value before replacing the Main Board Replace Main Board Re enter White Balance value Precaution Established date Standard Repair Process Revised date Error symptom A Video error No video Normal audio A18 A1 A18 A4 A2 First of all Check whether all of cables between board is inserted properly or not Main B D Power B D LVDS or EPI Cable Spe...

Страница 25: ...dio Check and replace MAIN B D Y Replace Power Board and repair parts N End Standard Repair Process A Video error No video No audio A18 Established date Revised date Error symptom 2 Copyright 2019 LG Electronics Inc All rights reserved Only for training and service purposes ...

Страница 26: ... Main B D Check Tuner soldering Normal Picture Y N Y Close Y Close By using Digital signal level meter By using Diagnostics menu on OSD Advanced Channels Channel Tuning Manual Tuning Check the Signal Signal strength Normal over 50 Signal Quality Normal over 50 Normal Picture Y Contact with signal distributor or broadcaster Cable or Air N Normal Picture Y Close N A4 Standard Repair Process Establis...

Страница 27: ...t error Check external device and cable Y External device Cable normal HDMI error Check external device and cable Replace Main T con B D Replace Main T con B D N N A Video error Color error A6 N Y End Replace module Request repair for external device cable Color error Check Test pattern A8 A7 Standard Repair Process Established date Revised date Error symptom 4 Copyright 2019 LG Electronics Inc Al...

Страница 28: ...I DVI by connecting Jig pattern Generator Set top Box etc N Y Replace Main T con B D Screen normal Check screen condition by input External Input Component HDMI DVI Request repair for external device Component error HDMI DVI Connect other external device and cable Check normal operation of External Input Component RGB and HDMI DVI by connecting Jig pattern Generator Set top Box etc Replace Main T ...

Страница 29: ...ure voltage of each output of Power B D N Y Normal voltage Replace Main B D Y OK Replace Main B D N Y Normal Check ST BY 3 5V Replace Power B D N Y Normal voltage Replace Power B D Y A17 A18 A18 A18 Standard Repair Process Established date Revised date Error symptom 6 Stand By Red or Turn On Operating Turn Off Close Copyright 2019 LG Electronics Inc All rights reserved Only for training and servic...

Страница 30: ...Power off by REMOTE CONTROL POWEROFF_OFFTIMER Power off by OFF TIMER POWEROFF_SLEEPTIMER Power off by SLEEP TIMER POWEROFF_INSTOP Power off by INSTOP KEY POWEROFF_AUTOOFF Power off by AUTO OFF POWEROFF_ONTIMER Power off by ON TIMER POWEROFF_RS232C Power off by RS232C POWEROFF_RESREC Power off by Reservated Record POWEROFF_RECEND Power off by End of Recording POWEROFF_SWDOWN Power off by S W Downlo...

Страница 31: ...ace Power Board and repair parts Check Speaker disconnection N Y Replace Speaker Replace MAIN Board End C Audio error No audio Normal video A20 A21 A18 Disconnection Established date Revised date Error symptom Standard Repair Process 8 Copyright 2019 LG Electronics Inc All rights reserved Only for training and service purposes ...

Страница 32: ...xternal Input Connect and check other external device N Y Normal audio Check and fix external device Replace Power B D N Y Normal voltage Check input signal RF External Input signal Signal normal When RF signal is not received Request repair to external cable ANT provider Y Check audio B Voltage 13 2V Replace Main B D In case of External Input signal error Check and fix external device Replace Mai...

Страница 33: ...m Check Replace Baterry of R C Check Repair Cable connection Connector solder Normal operating Check B 3 5V On Main B D A22 Normal Voltage Close N N Check 3 5v on Power B D Replace Power B D or Replace Main B D Power B D don t have problem A18 Check IR Output signal Normal Signal N Y Repair Replace IR B D N A22 Replace Main B D Y A22 Standard Repair Process Established date Revised date Error symp...

Страница 34: ... Check and fix external device cable HDMI DVI Optical Recognition error Replace Main B D Replace Main B D Fix in accordance with technical information D Function error External device recognition error Established date Revised date Error symptom Standard Repair Process 11 Copyright 2019 LG Electronics Inc All rights reserved Only for training and service purposes ...

Страница 35: ...ceed as shown in the solution manual For models without any fix information provide the description Mechanical noise is a natural phenomenon and apply the 1st level description When the customer does not agree apply the process by stage Describe the basis of the description in Part related to nose in the Owner s Manual E Noise Circuit noise mechanical noise Established date Revised date Error symp...

Страница 36: ...lace cabinet Replace remote control Remote control damage Stand dent Replace stand F Exterior defect Exterior defect Established date Revised date Error symptom Standard Repair Process 13 Copyright 2019 LG Electronics Inc All rights reserved Only for training and service purposes ...

Страница 37: ...s 14 IR OUT Not working Check MPI Connection A24 Same as Guide Y Change cable N N Suitable Data Format Change Remote or Recommend using External IR for STB Y Replace MAIN Board End Check Remote Controller data Format A24 Copyright 2019 LG Electronics Inc All rights reserved Only for training and service purposes ...

Страница 38: ...king Part A5 6 A Video error _Vertical Horizontal bar residual image light spot Connection diagram A6 7 A Video error_ Color error Check Link Cable Vx1 EPI reconnection condition A7 8 Adjustment Test pattern ADJ Key A8 9 Appendix Defected Type caused by T Con Inverter Module Exchange Main Board 1 A 1 5 10 Exchange Main Board 2 A 2 5 11 Exchange Power Board PSU A 3 5 12 Exchange Module 1 A 4 5 13 E...

Страница 39: ...e viewing POWER OFF MODE checking method A19 17 C Audio error_ No audio Normal video Checking method in menu when there is no audio A20 18 Voltage and speaker checking method when there is no audio A21 19 D Function error Remote control operation checking method A22 20 E Commercial Function error IR OUT Error A23 Continued from previous page Copyright 2019 LG Electronics Inc All rights reserved On...

Страница 40: ... Content Check LCD back light with naked eye A Video error_No video Normal audio After turning on the power and disassembling the case check with the naked eye whether you can see light from locations A1 Copyright 2019 LG Electronics Inc All rights reserved Only for training and service purposes ...

Страница 41: ...ideo Normal audio A2 ALL MODELS Entry method 1 Press the ADJ button on the remote control for adjustment 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 2019 LG Electronics Inc All rights reserved Only for training and service purposes ...

Страница 42: ...20dB etc Standard Repair Process Detail Technical Manual TUNER input signal strength checking method A Video error_Video error video lag stop ALL MODELS A3 Established date Revised date Error symptom Content A3 Copyright 2019 LG Electronics Inc All rights reserved Only for training and service purposes ...

Страница 43: ...o error video lag stop 1 Checking method for remote control for adjustment Press the IN START with the remote control for adjustment Version A4 Established date Revised date Error symptom Content A4 Copyright 2019 LG Electronics Inc All rights reserved Only for training and service purposes ...

Страница 44: ...easuring each voltage from power supply finally replace the MAIN BOARD Standard Repair Process Detail Technical Manual TUNER checking part A Video error_Video error video lag stop A5 Established date Revised date Error symptom Content A5 Copyright 2019 LG Electronics Inc All rights reserved Only for training and service purposes ...

Страница 45: ... _Vertical Horizontal bar residual image light spot As the part connecting to the external input check the screen condition by signal A6 Established date Revised date Error symptom Content A6 Copyright 2019 LG Electronics Inc All rights reserved Only for training and service purposes ...

Страница 46: ...connection condition A Video error_Color error Check the contact condition of the Link Cable especially dust or mis insertion A7 Established date Revised date Error symptom Content A7 Copyright 2019 LG Electronics Inc All rights reserved Only for training and service purposes ...

Страница 47: ...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 A8 Established date Revised date Error symptom Content A8 Copyright 2019 LG Electronics Inc All rights reserved Only for training and service purposes ...

Страница 48: ...CNT Broken Solder defect CNT Broken Solder defect CNT Broken Solder defect CNT Broken Abnormal Power Section Solder defect Short Crack Abnormal Power Section Solder defect Short Crack Appendix Exchange Main Board 1 A 1 5 Copyright 2019 LG Electronics Inc All rights reserved Only for training and service purposes ...

Страница 49: ...normal Power Section Solder defect Short Crack Fuse Open Abnormal power section Noise GRADATION GRADATION Abnormal Display Appendix Exchange Main Board 2 A 2 5 Copyright 2019 LG Electronics Inc All rights reserved Only for training and service purposes ...

Страница 50: ...Appendix Exchange Power Board PSU No Light Dim Light Dim Light Dim Light No picture Sound Ok A 3 5 Copyright 2019 LG Electronics Inc All rights reserved Only for training and service purposes ...

Страница 51: ...odule 1 A 4 5 Crosstalk Crosstalk Press damage Press damage Un repairable Cases In this case please exchange the module Press damage Copyright 2019 LG Electronics Inc All rights reserved Only for training and service purposes ...

Страница 52: ...rtical Block Source TAB IC Defect Horizontal Block Gate TAB IC Defect Horizontal line Gate TAB IC Defect Gate TAB IC Defect Horizontal Block Gate TAB IC Defect Appendix Exchange the Module 2 A 5 5 Un repairable Cases In this case please exchange the module Copyright 2019 LG Electronics Inc All rights reserved Only for training and service purposes ...

Страница 53: ...dicator B Power error _No power A17 Established date Revised date Error symptom Content A17 ST BY condition On or Off Power ON condition Turn Off Power On Press Power Off Press Copyright 2019 LG Electronics Inc All rights reserved Only for training and service purposes ...

Страница 54: ... Technical Manual Revised date A18 Error symptom Content Check power input voltage and ST BY 3 5V B Power error _No power A18 Check the DC 13 2V 43 49 55 65 Copyright 2019 LG Electronics Inc All rights reserved Only for training and service purposes ...

Страница 55: ...to adjustment item 3 Standard Repair Process Detail Technical Manual POWER OFF MODE checking method B Power error _Off when on off whiling viewing A19 Established date Revised date Error symptom Content A19 Copyright 2019 LG Electronics Inc All rights reserved Only for training and service purposes ...

Страница 56: ...und Out 4 Select TV Speaker Standard Repair Process Detail Technical Manual Checking method in menu when there is no audio C Audio error_No audio Normal video ALL MODELS A20 Established date Revised date Error symptom Content A20 Copyright 2019 LG Electronics Inc All rights reserved Only for training and service purposes ...

Страница 57: ...speaker terminal and if you hear the Chik Chik sound when you touch the GND and output terminal the speaker is normal Standard Repair Process Detail Technical Manual Voltage and speaker checking method when there is no audio C Audio error_No audio Normal video A21 Established date Revised date Error symptom Content A21 1 SPK_R FT 2 SPK_R FT 3 SPK_L FT 4 SPK_L FT Copyright 2019 LG Electronics Inc A...

Страница 58: ...ion error A22 Established date Revised date Error symptom Content A22 Checking order to check remote control Pin Pin name 1 3 5V_WIFI 2 WIFI_DM_JACK 3 WIFI_DP_JACK 4 GND 5 WOL WIFI_POWER_ON_JACK 6 3 5V_WIFI 7 WIFI_SUSPEND RESUME_JACK 8 GND 9 COMBO_RESET_JACK 10 BT_WAKEUP_HOST_JACK 11 GND 12 3 5V_WIFI 13 N C 14 N C 15 N C 16 EYE_SDA_JACK 17 EYE_SCL_JACK 18 GND 19 IR_JACK 20 LED_R_JACK 21 GND 22 3 5...

Страница 59: ...tablished date Revised date Error symptom Content A23 IR OUT Error 1 Check the Cable Connection IR Out supported by MPI Connection 2 Check the Suitable Data Format of remote controller Copyright 2019 LG Electronics Inc All rights reserved Only for training and service purposes ...

Страница 60: ......

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