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LG 43UF640 SERIES Service Manual Download Page 44

Standard Repair Process Detail Technical Manual

Connection diagram (1)

A. Video error _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

<ALL MODELS>

Copyright © 2015 LG Electronics. Inc. All rights reserved.
Only for training and service purposes

LGE Internal Use Only

Summary of Contents for 43UF640 SERIES

Page 1: ...ASSIS BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL READ THE SAFETY PRECAUTIONS IN THIS MANUAL LED TV LED TV SERVICE MANUAL SERVICE MANUAL North Latin North Latin America America http aic lgservice com http aic lgservice com Europe Africa http eic lgservice com Europe Africa http eic lgservice com Asia Oceania Asia Oceania http biz lgservice com http biz lgservice com Int...

Page 2: ...CONTENTS CONTENTS CONTEN CONTENTS TS 2 2 SAFETY PRECA SAFETY PRECAUTIONS UTIONS 3 3 SERVI SERVICING CING PRECAUT PRECAUTIONS IONS 4 4 SPECIFIC SPECIFICA ATION TION 6 6 ADJUSTME ADJUSTMENT NT INSTRUCT INSTRUCTION ION 15 15 BLOCK DIAGRAM BLOCK DIAGRAM 21 21 EXPLODE EXPLODED D VIEW VIEW 30 30 SCHEMATIC CIRCUIT DIAGRAM APPENDIX SCHEMATIC CIRCUIT DIAGRAM APPENDIX TROUBL TROUBLE E SHOOTING GUIDE SHOOTIN...

Page 3: ...t is safe to operate without damage of electrical shock shock Leakage Current Cold Check Antenna Cold Check Leakage Current Cold Check Antenna Cold Check With the instrument AC plug removed from AC source connect an With the instrument AC plug removed from AC source connect an electrical jumper across the two AC plug prongs Place the AC electrical jumper across the two AC plug prongs Place the AC ...

Page 4: ...rostatic charge on your body by touching a known earth ground Alter natively obtain and wear a commercially available discharg ing wrist strap device which should be removed to prevent potential 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 ele...

Page 5: ...e solder joints 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...

Page 6: ...ithuania Poland Portugal Romania Albania Bosnia Slovakia Belarus DTV MPEG2 4 DVB T2 11 countries UK Ireland Sweden Denmark Finland Norway Ukraine Kazakhstan Russia Italy Croatia Serbia DTV MPEG2 4 DVB C 37 countries Germany Netherland Switzerland Hungary Austria Slovenia Bulgaria France Spain Italy Belgium Russia Luxemburg Greece Czech Cro atia Turkey Morocco Ireland Latvia Estonia Lithuania Polan...

Page 7: ...Bitrate_Mbit s 1 4 1 8 1 16 1 32 Modulation Code Rate QPSK 1 2 2 3 3 4 5 6 7 8 16 QAM 1 2 2 3 3 4 5 6 7 8 64 QAM 1 2 2 3 3 4 5 6 7 8 DVB T2 Guard Interval Bitrate_Mbit s 1 4 1 8 1 16 1 32 1 128 19 128 19 256 Modulation Code Rate QPSK 1 2 2 5 2 3 3 4 5 6 16 QAM 1 2 2 5 2 3 3 4 5 6 64 QAM 1 2 2 5 2 3 3 4 5 6 256 QAM 1 2 2 5 2 3 3 4 5 6 DVB C Symbolrate 4 0 Msymbols s to 7 2 Msymbols s Modulation 16Q...

Page 8: ...put Level Y CB PB CR PR 0 6 0 7 0 8 Vpp No Resolution H freq kHz V freq Hz Pixel clock MHz Proposed 1 720 480 15 73 60 13 5135 SDTV DVD 480I 2 720 480 15 73 59 94 13 5 SDTV DVD 480I 3 720 480 31 50 60 27 027 SDTV 480P 4 720 480 31 47 59 94 27 0 SDTV 480P 5 1280 720 45 00 60 00 74 25 HDTV 720P 6 1280 720 44 96 59 94 74 176 HDTV 720P 7 1920 1080 33 75 60 00 74 25 HDTV 1080I 8 1920 1080 33 72 59 94 7...

Page 9: ...rcumstance of above 15 C for 2 hours In case of keeping module is in the circumstance of below 20 C it should be placed in the circumstance of above 15 C for 3 hours Caution When still image is displayed for a period of 20 minutes or longer Especially where W B scale is strong Digital pattern 13ch and or Cross hatch pattern 09ch there can some afterimage in the black level area 3 Automatic Adjustm...

Page 10: ...itialized Not always It is impossible to download by bar code scan so It need Manual download 1 Press the Instart key of Adjustment remote control 2 Go to the menu 7 Model Number D L like below photo 3 Input the Factory model name ex 47LB650V ZA or Serial number like photo 4 Check the model name Instart menu Factory name displayed ex 47LB650V ZA 5 Check the Diagnostics DTV country only Buyer model...

Page 11: ...0 01 01 01 01 10 01 19 01 03 80 A0 5A 78 0A EE 91 A3 54 4C 99 26 20 0F 50 54 A1 08 00 31 40 45 40 61 40 71 40 81 80 30 01 01 01 01 01 01 08 E8 00 30 F2 70 5A 80 B0 58 40 8A 00 40 84 63 00 00 1E 02 3A 80 18 71 38 2D 40 50 58 2C 45 00 40 84 63 00 00 1E 00 00 00 FD 00 3A 60 3E 1E 88 3C 00 0A 20 20 20 20 20 20 00 00 00 FC 70 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 01 A0 0 1 2 3 4 5 6 7 8 9 A B C D E...

Page 12: ... 5F 62 63 64 29 3D 06 C0 15 07 50 A0 09 57 07 6E 03 0C 00 20 00 B8 3C 20 00 80 01 02 B0 03 04 E5 0E 60 61 65 66 01 1D 80 18 71 1C 16 20 C0 58 2C 25 00 40 84 63 00 00 9E 01 1D 00 72 51 D0 D0 1E 20 6E 28 55 00 40 84 63 00 00 1E 00 00 00 00 E0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 F0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0D 0 1 2 3 4 5 6 7 8 9 A B C D E F 80 02 03 35 F1 54 10 9F 04 1...

Page 13: ...4 63 00 00 1E 02 3A 80 18 71 38 2D 40 50 58 2C 45 00 40 84 63 00 00 1E 00 00 00 FD 00 3A 60 3E 1E 88 3C 00 0A 20 20 20 20 20 20 00 00 00 FC 70 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 01 A0 0 1 2 3 4 5 6 7 8 9 A B C D E F 80 02 03 41 F1 58 10 9F 04 13 05 14 03 02 12 20 21 90 22 15 01 60 61 5D 5E 5F 65 66 62 63 64 23 09 57 A0 07 6E 03 0C 00 10 00 B8 3C 20 00 80 01 02 03 04 B0 67 D8 5D C4 01 78 80 ...

Page 14: ...9 0 1 EXPLODED VIEW Many electrical and mechanical parts in this chassis have special safety related characteristics These parts are identified by in the Schematic Diagram and 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 permiss...

Page 15: ...LD59R LM14A Copyright 2015 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

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Page 22: ...5 EU R4602 100 EU R4609 75 EU JK4600 PSC008 01 EU 1 AUDIO_R_OUT 2 AUDIO_R_IN 3 AUDIO_L_OUT 4 AUDIO_GND 5 B_GND 6 AUDIO_L_IN 7 B_OUT 8 ID 9 G_GND 10 D2B_IN 11 G_OUT 12 D2B_OUT 13 R_GND 14 RGB_GND 15 R_OUT 16 RGB_IO 17 SYNC_GND1 18 SYNC_GND2 19 SYNC_OUT 20 SYNC_IN 21 COM_GND 22 AV_DET VA4601 5 6V EU R4601 10K EU C4600 1000pF 50V EU VA4604 5 5V EU SC_FB C4602 4700pF EU VA4605 5 5V EU DTV MNT_V_OUT VA...

Page 23: ... 4 4 5 5 6 6 7 7 8 8 9 9 C5001 0 01uF 50V VA5000 5 5V LAN_ESD MAIN EPHY_RDP V A 5 0 0 0 1 I C V S 0 5 1 8 1 5 0 F R _ L A N _ E S D S U B V A 5 0 0 1 1 I C V S 0 5 1 8 1 5 0 F R _ L A N _ E S D S U B V A 5 0 0 2 1 I C V S 0 5 1 8 1 5 0 F R _ L A N _ E S D S U B V A 5 0 0 3 1 I C V S 0 5 1 8 1 5 0 F R _ L A N _ E S D S U B JK5000 2 36TM9G 30150 02HF NEW_LAN_JACK_3SIM T 36TM9G_30150_02HF FREEPORT RE...

Page 24: ...L5805 10 0uH NRS6045T100MMGK TAIYO_AMP_COIL IC5800 NTP7515 3 NC_2 2 VDD_PLL 4 GN D 1 NC_1 6 DVDD 5 NC_3 7 SDATA 8 WC K 9 NC_4 10 SD A 1 1 S C L 1 2 F A U L T 1 3 M O N I T O R _ 0 1 4 M O N I T O R _ 1 1 5 M O N I T O R _ 2 1 6 B S T 2 B 1 7 P G N D 2 B 1 8 O U T 2 B 1 9 P V D D 2 B 2 0 P V D D 2 A 21 OUT2A 22 PGND2A 23 BST2A 24 VDR2 25 AGND 26 NC_5 27 VDR1 28 BST1B 29 PGND1B 30 OUT1B 3 1 P V D D ...

Page 25: ...P T R6021 0 1 16W 5 EU R6014 1K EU Q6002 1 PDTA114ET EU_SCART_MUTE_NXP E B C DTV MNT_L_OUT Q6001 MMBT3904 NXP EU E B C C6003 33pF EU SCART_Rout R6010 470K OPT C6002 6800pF OPT R6020 0 1 16W 5 EU R 6 0 0 8 3 3 K EU R6005 220K EU R6003 10K EU DTV MNT_R_OUT R6000 2 2K EU R6016 5 6K EU SCART_AMP_L_FB SCART_Lout R 6 0 1 5 1 0 0 K 1 1 6 W 5 O P T R6019 0 1 16W 5 EU C6009 330pF EU 12V SCART_AMP_R_FB C600...

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Page 28: ...OR THE THE CRITICAL CRITICAL COMPONENTS COMPONENTS IN IN THE THE SYMBOL SYMBOL MARK MARK OF OF THE THE SCHEMETIC SCHEMETIC 2015 01 23 2015 01 23 C CL LI IP P V Vx x1 1_ _C CA AP P 1 13 35 5 LM14A LM14A EAG64250901 EAG64250901 M13501 M13501 OPT OPT EAG64250901 EAG64250901 M13502 M13502 OPT OPT CLIP Top Side for Covershield CLIP Top Side for Covershield LM14A URSA11 UF68 64 LM14A URSA11 UF68 64 CLIP...

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Page 33: ...rnal 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 4 16 Error symptom 4 Copyright 2015 LG Electronics Inc All rights rese...

Page 34: ...y 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 con B D...

Page 35: ... 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 6 16 Error symptom 6 Stand By Red or Turn On Operating Turn Off Close N Copyright 2015 LG Electronics Inc All rights reserved Only for training and service purpo...

Page 36: ... 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 14 16 Error symptom Standard Repair Process 14 Copyright 2015 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 37: ...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 15 16 Error symptom Stan...

Page 38: ...eplace remote control Remote control damage Stand dent Replace stand F Exterior defect Exterior defect Established date Revised date 16 16 Error symptom Standard Repair Process 16 Copyright 2015 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 39: ...l audio After turning on the After turning on the power and disassembli power and disassembling the cas ng the case check with the e check with the naked eye naked eye whether you can see light from locations whether you can see light from locations A1 A1 43 49UF640V ZA 43 49UF640V ZA 43 49UF6407 ZA 43 49UF6407 ZA Copyright 2015 LG Electronics Inc All rights reserved Copyright 2015 LG Electronics ...

Page 40: ...or Temp Cool Medium Wa Cool Medium Warm re enter the value after rm re enter the value after replacing the MAIN BOARD replacing the MAIN BOARD Entry method Entry method 1 Press the ADJ button on the remote control for adjustment 1 Press the ADJ button on the remote control for adjustment 2 Enter into White Balance of item 10 2 Enter into White Balance of item 10 3 After recording the R G 3 After r...

Page 41: ...put signal strength checking method TUNER input signal strength checking method A Video error_Video error video lag stop A Video error_Video error video lag stop ALL MODELS ALL MODELS A3 A3 Established Established date date Revised Revised date date Error Error symptom symptom Content Content A3 A3 Copyright 2015 LG Electronics Inc All rights reserved Copyright 2015 LG Electronics Inc All rights r...

Page 42: ...g stop 1 Checking method for remote control for adjustment Press the IN START with the remote control for adjustment Version ALL MODELS A4 Established date Revised date Error symptom Content A4 v Copyright 2015 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 43: ... BOARD 3 If you can t see the UHD live TV please connect signal at left side of jack Korea model only Standard Repair Process Detail Technical Manual TUNER checking part A Video error_Video error video lag stop ALL MODELS A5 Established date Revised date Error symptom Content A5 Copyright 2015 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 44: ...ntal 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 ALL MODELS Copyright 2015 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 45: ...tion Fuse Open Abnormal power section Noise Noise GRADATION GRADATION GRADATION GRADATION Abnormal Displ Abnormal Display ay Appendix Exchange Main Board 2 Appendix Exchange Main Board 2 A 2 5 A 2 5 Copyright 2015 LG Electronics Inc All rights reserved Copyright 2015 LG Electronics Inc All rights reserved Only for training and service purposes Only for training and service purposes LGE Internal Us...

Page 46: ...ht Dim Light Dim Light Dim Light No picture Sound Ok No picture Sound Ok A 3 5 A 3 5 Copyright 2015 LG Electronics Inc All rights reserved Copyright 2015 LG Electronics Inc All rights reserved Only for training and service purposes Only for training and service purposes LGE Internal Use Only LGE Internal Use Only ...

Page 47: ... leakage Panel Mura Light leakage Press damage Press damage A 4 5 A 4 5 Un repairable Cases Un repairable Cases In this case please exchange the module In this case please exchange the module Copyright 2015 LG Electronics Inc All rights reserved Copyright 2015 LG Electronics Inc All rights reserved Only for training and service purposes Only for training and service purposes LGE Internal Use Only ...

Page 48: ...k 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 2015 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 49: ...er Indicator 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 Copyright 2015 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 50: ...il Technical Manual Revised date A18 Error symptom Content Check power input voltage B Power error _No power A18 Check the DC 13 2V Copyright 2015 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

Page 51: ... Check Wifi cable condition between Wifi assy Main board 2 Check the 3 3V on the terminal 12 Checking order to check motion remote wifi Wifi Front Wifi Rear 1 GND 2 3 3V 3 WiFi_RESET 4 WiFi_DM 5 GND 6 WiFi_DP 7 EYE_SDA 8 GND 9 EYE_SCL 10 KEY2 11 IR 12 3 3V_STBY 13 LED_R 14 GND Copyright 2015 LG Electronics Inc All rights reserved Only for training and service purposes LGE Internal Use Only ...

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