LG 65LF6300 Service Manual
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LG 65LF6300 Service Manual

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See also: Owner's Manual
LED TV

SERVICE MANUAL

CHASSIS : LA51H
MODEL : 65LF6300
MODEL :
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL68660904 (1503-REV01)
North/Latin America
Europe/Africa
Asia/Oceania
65LF6390
Internal Use Only
http://aic.lgservice.com
http://eic.lgservice.com
http://biz.lgservice.com
65LF6300-UA
65LF6390-UA
Printed in Korea

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Summary of Contents for LG 65LF6300

  • Page 1: Service Manual

    North/Latin America http://aic.lgservice.com Europe/Africa http://eic.lgservice.com Asia/Oceania http://biz.lgservice.com LED TV SERVICE MANUAL CHASSIS : LA51H MODEL : 65LF6300 65LF6300-UA MODEL : 65LF6390 65LF6390-UA CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL68660904 (1503-REV01) Printed in Korea...
  • Page 2 PRODUCT SAFETY ................. 3 SPECIFICATION ..................6 ADJUSTMENT INSTRUCTION .............. 13 EXPLODED VIEW .................. 22 SCHEMATIC CIRCUIT DIAGRAM ..........APPENDIX TROUBLESHOOTING ...............APPENDIX - 2 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 3: Safety Precautions

    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 4: Servicing Precautions

    - 4 - 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: Test Condition

    1) Performance: LGE TV test method followed 2) Demanded other specification - Safety : CE, IEC specification - EMC: CE, IEC - 6 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 7: General Specification

    49LF6300-UA 1920X1080 300CD COLOR 68% P/N: EAJ63110601 16/9 1200:1 60Hz Inverter N LED 2D With T-con, 51.1W/47W/4.1W, 8Bit, 10000K, 178/178, GTGBW 9ms, LVDS 2ch, Carbon Titan LG Display Co., Ltd. LC550EUE-FHM1 FHD 55.0INCH LC550EUE-FHM1 55LF6300-UA 1920X1080 330CD COLOR 68% P/N: EAJ63110501 16/9 1200:1 60Hz Inverter N LED 2D With T-con, 62.0W/58.4W/3.6W, 8Bit,...
  • Page 8 2D to 3D,Side by Side, Top and Bottom HDTV 1080I 1920*1080 33.72 59.94 74.176 2D to 3D,Side by Side, Top and Bottom HDTV 1080I - 8 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 9 HDTV 1080P 1920*1080 26.97 23.97 74.176 HDTV 1080P 1920*1080 33.75 30.000 74.25 HDTV 1080P 1920*1080 33.716 29.976 74.176 HDTV 1080P - 9 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 10 2D to 3D, S/S, T&B, C/B, R/I, C/I 26.973 / 27 23.976 / 24 74.175/74.25 1920*1080p 33.716 / 33.75 29.97 / 30.00 74.175/74.25 - 10 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 11 Resolution H-freq(kHz) V-freq.(kHz) 3D input proposed mode Under 320*240 2D to 3D Over 320*240 2D to 3D,Side-by-side , Top-and-Bottom - 11 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 12 2D Support freq 2D Support resolution Side by Side Top & Bottom Checkerboard Single Frame Frame Packing 2D to 3D Sequential - 12 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 13: Adjustment Instruction

    (2) Manual adjustment for ADC calibration and White balance. (3) Shipment conditions, Channel pre-set 4.2.6. Inspection - In INSTART menu, check these keys. - 13 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 14 00 00 00 FC 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 4.4.2 Equipment ⓔ Checksum(LG TV): Changeable by total EDID data. ▪ Since embedded EDID data is used, EDID download JIG, HDMI cable and D-sub cable are not need.
  • Page 15 00 00 00 FC 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 LA51H 00 00 00 FC 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 ⓔ Checksum(LG TV): Changeable by total EDID data. ⓔ Checksum(LG TV): Changeable by total EDID data. ⓔ1 ⓔ2...

  • Page 16: White Balance Adjustment

    00 00 00 FC 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 (2) Adj. Computer (During auto adj., RS-232C protocol is needed) ⓔ Checksum(LG TV): Changeable by total EDID data. (3) Adjust Remocon (4) Video Signal Generator MSPG-925F 720p/204-Gray ⓔ1...
  • Page 17 ▪ W/B Adj. must begin as start command “wb 00 00” , and Warm 0.313 0.329 6,500K 0.0000 finish as end command “wb 00 ff”, and Adj. offset if need - 17 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 18 Magic RF receiver 50-79 LA51H 43LF6300-UA Built-in 80-119 Over 120 (3) O/S Module(AUO, INX, Sharp, CSOT, BOE) cool warm spec target - 18 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 19 Fig.2 Fig.3 <OK in 3D mode without 3D glasses> <NG in 3D mode without 3D glasses> - 19 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 20 - GND Test = POWER CORD GND and SIGNAL CABLE GND. - Hi-pot Test = POWER CORD GND and LIVE & NEUTRAL. (4) LEAKAGE CURRENT: At 0.5mArms - 20 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 21 6.White Balance, you can select one of 2 Test-pattern: ON, OFF. Default is inner(ON). By selecting OFF, you can adjust using RF signal in 216 Gray pattern. - 21 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 22: Exploded View

    Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. - 22 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 23 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. M14 Symbol A M14-Peripheral Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 24 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR M14+ Symbol B THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. M14-Display In/Out Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 25 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR M14+ Symbol C THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. M14-AV In/Out Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 26 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR M14+ DDR3-M0 THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 27 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR M14+ DDR3-M1 THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 28 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR VCC & GND THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. 11/05/31 LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 29 2014.05.28 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR POWER THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 30 2014.05.28 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. MICOM LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 31 2013.03.22 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. HDMI LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 32 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR AV JACK THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 33 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR IR / KEY THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 34 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR USB 2 & 3 THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 35 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR USB 1(DVR) THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 36 FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 37 2012-09-12 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR ETHERNET THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 38 FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR AUDIO[NTP7515] THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 39 FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 40 TUNER 2012.03.08 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 41 TUNER 2012.07.10 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 42 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LVDS INTERFACE LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 43 2013.04.03 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. T-Con LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 44 11.09.29 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 45 FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 47 2015 Engineering guide < Applicable Model – Mid end > 40/43/49/55/60/65LF6300 42/47/50/55/60LF6500 LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 48 6. Structure of TV set and connection of sub assy’s 7. New sub assy’s - Instruction of new sub assy’s - How to use tool - Download 8. Repair guide LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 49 6. Structure of TV set and connection of sub assy’s 7. New sub assy’s - Instruction of new sub assy’s - How to use tool - Download 8. Repair guide LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 50 LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 51 6. Structure of TV set and connection of sub assy’s 7. New sub assy’s - Instruction of new sub assy’s - How to use tool - Download 8. Repair guide LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 52 Model naming and Tool option Standard of 2015 Model Name Description of Tool Options LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. - 6/83 - Only for training and service purposes...

  • Page 53: New Features

    6. Structure of TV set and connection of sub assy’s 7. New sub assy’s - Instruction of new sub assy’s - How to use tool - Download 8. Repair guide LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 54 Architecture LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 55 6. Structure of TV set and connection of sub assy’s 7. New sub assy’s - Instruction of new sub assy’s - How to use tool - Download 8. Repair guide LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 56 WiFi + BT(Magic Remocon receiver) Tuner Audio AMP (10W+10W) LVDS or EPI Wafer 1. Key + IR Front Spk 2. WIFI + BT LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 57 WiFi + BT(Magic Remocon receiver) Tuner Audio AMP (12W+12W) LVDS or EPI Wafer 1. Key + IR Front Spk 2. WIFI + BT LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 58 WiFi + BT(Magic Remocon receiver) Tuner Audio AMP (12W+12W) LVDS or EPI Wafer Front Spk 1. Key + IR 2. WIFI + BT LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 59 6. Structure of TV set and connection of sub assy’s 7. New sub assy’s - Instruction of new sub assy’s - How to use tool - Download 8. Repair guide LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 60 BLUTOOTH USB_WIFI-BT WIFI OPTIC SPDIF OUT ASSY IR / KEY/EYE ETHERNET X_TAL 25MHz Sub Micom I2C 3 (RENESAS R5F1000G) X_TAL 32.768KHz LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 61 3.3KΩ 3.3KΩ I2C_SDA2 I2C_SDA5 33Ω IC3000 33Ω TUNER (Demod) I2C_SCL2 I2C_SCL5 Renesas MICOM 3.3KΩ +3.5V_ST EYE_I2C_SDA 100Ω EYE_I2C_SCL IR / KEY/EYE LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 62: Power Block Diagram

    3. Power Block Diagram LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 63 [M_DIF_P] 6 IF_N AL28 [DMD_ADC_INN] [M_DIF_N] 7 TUNER_SIF(for T2/C/S) S_SIF 9 AK29[DMD_ADC_SIF] TU_CVBS(for T2/C/S) S_CVBS 8 AL27[CVBS_IN1] IF_AGC M_DIF_IFAGC 3 AM29[IFAGC] LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 64 [AUDA_L_CH3_IN] COMP1/AV1/DVI_R_IN AUAD_R_CH3_IN [AUDA_R_CH3_IN] IC101 M14+ [CVBS_IN2] [SC1_SID, SC1_FB] [PB1_IN/Y1_IN/SOY1_IN/PR1_IN] [AUDA_L_CH2_IN/AUDA_R_CH2_IN] Tuner TU_CVBS TU_CVBS_SOC [CVBS_IN1] TUNER_SIF ADC_I_INP TUNER_SIF/IF_P/N [AAD_ADC-SIF] ADC_I_INN [DMD_ADC_INP/DMD_ADC_INN] LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 65 AMP_RESET_N [GPIO21] IC101 AMP_MUTE M14+ IC3000 MICOM TUNER_SIF [AAD_ADC-SIF] IC6800 RIN1/DOUT1 SOC_RX/SOC_TX [UART0_RXD] Service_Only MAX3232CDR [UART0_TXD] RS232 JK3403 SPDIF_OUT [IEC9580UT] JK3401 LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 66 HDMI_HPD HDMI2 DDC_SCL_4 DDC_SDA_4 TMDS Link or MHL Link TMDS Link 8bits HDMI_HPD HDMI3 Q3001 HDMI_CEC X-tal RENESAS WOL_CT 32.768kHz MICOM LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 67 EPI Tx Block GMA4/GMA5/GAM7/GMA12/GMA14/GMA15 VGH_ODD/EVEN,VST,GIP_RST VCOM 1/2 - Top/Bottom CLK1~CLK6 VCOMLFB OP AMP VCOMRFB CLK1~CLK6 VGH_ODD/EVEN,VST,GIP_RST GMA4/GMA5/GAM7/GMA12/GMA14/GMA15 EPI CH5/6/7/8+/- EPI_LOCK8 EPI_LOCK8 LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 68 [USB2_1_DM0] USB_DP3 [USB2_1_DP0] /USB_OCD3 [EB_CS1] USB_CTL3 [EB_CS0] WIFI-BT_DM [USB2_0_DP0] WIFI-BT_DP WIFI-BT [USB2_0_DM0] EYY_SCL EYE_SDA IR-KEY Micom -EYE KEY1 KEY2 IC101 M14+ LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 69 6. Structure of set and connection of sub assy’s 7. New sub assy’s - Instruction of new sub assy’s - How to use tool - Download 8. Repair guide LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 70 [Cables] Main / LPB 12Pin cable Main / Module LVDS Cable Module B/light Cable 18Pin IR+key / WIFI/BT Cable SPK Cable LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 71 6. Structure of TV set and connection of sub ass’ys 7. New sub assy’s - Instruction of new sub assy’s - How to use tool - Download 8. Repair guide LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 72: Block Diagram

    Introductions of 15Y WIFI / BT built in assy + Magic Remote control Table of Contents 1. System 2. Block diagram 3. Paring method LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 73 • Period : 7.5msec • Motion Data : gyro, accelerometer  Voice Data Transmission • Period : 10msec • Voice sampling : 16khz 16bit LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 74 5 sec. • After unpairing, LED should be blinked for 3sec. • The remote just becomes to IR mode. LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 75 RX/TX Switch Antenna RTC6603 2.4G/5G USB DP, DN BCM43232 RX/TX Switch Antenna Crystal RTC6608O 2.4G/5G 37.4MHz BT TX Antenna RFLPF1608 2.4G LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 76 4. WIFI Built in ass’y Specification LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 77 6. Structure of TV set and connection of sub ass’ys 7. New sub ass’ys - Instruction of new sub ass’ys - How to use tool - Download 8. Repair guide LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 78 Circuit noise, mechanical noise F. Exterior error Exterior defect First of all, Check whether there is SVC Bulletin in GCSC System for these model. LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 79 Exchange LED driver Board (PSU) A-3/5 Module Exchange Module itself (1) A-4/5 Exchange Module itself (2) A-5/5 Continue to the next page LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 80 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 ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 81 Check voltages of Power Check and Normal No Video/ Board (13V) replace voltage? No audio MAIN B/D Replace Power Board and repair parts LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 82 Check Normal Contact with signal distributor Tuner soldering or broadcaster (Cable or Air) Picture? Normal Picture? Replace Main B/D Close Close LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 83 Contact with signal Change satellite setting distributor Normal (match with installed ANT) or broadcaster Picture? (Cable or Air) Normal Picture? Close Close Close LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 84 Request repair for external device/cable RGB/ Check external External device HDMI/DVI device and /Cable Replace Main B/D error cable normal LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 85 (Check normal operation of Replace Screen External Input, Component, normal? Main B/D RGB and HDMI/DVI by HDMI/ connecting Jig, pattern Generator ,Set-top Box etc. LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 86 Measure voltage of each output of Power B/D Normal? ※ Normal Replace Main B/D voltage? Close Normal Check ST-BY 9.7V voltage? ☞A18 Replace Power B/D Replace Power LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 87 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 ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 88 Screen normal voltage Speaker off Cancel OFF Replace Power Board and repair parts Check Speaker Disconnection Replace MAIN Board disconnection Replace Speaker LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 89 Input signal error) Connect and check Normal Check and fix other external device audio? external device Check and fix external device LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 90 (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 LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 91 - S/W Version RGB,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 ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 92 ※ Describe the basis of the description in (For models without any fix information, provide “Part related to nose” in the Owner’s Manual. the description) LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 93 Replace module Adjust VCOM exterior damage damage ☞A28 Cabinet Replace cabinet damage Remote controller Replace remote controller damage Stand Replace stand dent LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 94 D. Function error_ No response in remote Remote controller operation checking method controller, key error D. VCOM Adjustment Sequence of the Vcom adjustment LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 95 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 ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 96 2015, 18Pin map (local dimming Model) PWR ON/OFF PDIM #2 D13.2V D13.2V D13.2V A13.2V A13.2V 11 DRV ON/OFF PDIM #1 13 GND V-SYNC 17 SPI-SIN SPI-SCLK LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 97 <ALL MODELS>  MENU  Channel Manual  select channel When the signal is strong, use the attenuator (-10dB, -15dB, -20dB etc.) LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 98 <ALL MODELS> 1. Checking method for remote controller for adjustment Version Press the IN-START with the remote controller for adjustment LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 99 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 ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 100 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 ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 101 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 ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 102 Solder defect, CNT Broken Solder defect, CNT Broken T-Con Defect, CNT Broken Abnormal Power Section Solder defect, Short/Crack Solder defect, Short/Crack LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 103 Abnormal Power Section Abnormal Power Section Solder defect, Short/Crack Abnormal Display Fuse Open, Abnormal power section Solder defect, Short/Crack Noise GRADATION GRADATION LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 104 Appendix : Exchange PSU(LED driver) A-3/5 No Light Dim Light Dim Light Dim Light No picture/Sound Ok LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 105 Panel Mura, Light leakage Press damage Crosstalk Press damage Crosstalk Un-repairable Cases In this case please exchange the module. Press damage LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 106 Gate TAB IC Defect Un-repairable Cases In this case please exchange the module. Horizontal Block Gate TAB IC Defect Gate TAB IC Defect LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 107 B. Power error _No power Error symptom date Revised Content Check front display LED date ST-BY condition: On Power ON condition: Off LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 108 2015, 18Pin map (local dimming Model) PWR ON/OFF PDIM #2 D13.2V D13.2V D13.2V A13.2V A13.2V 11 DRV ON/OFF PDIM #1 13 GND V-SYNC 17 SPI-SIN SPI-SCLK LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 109 Entry method 1. Press the IN-START button of the remote controller for adjustment 2. Check the entry into adjustment item 3 LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 110 1. Press the MENU button on the remote controller 2. Select the AUDIO function of the Menu 3. Select TV Speaker Or Other LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 111 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. LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 112 When checking the Pre-Amp when the power is in ON condition, it is normal when the Analog Tester needle moves slowly, and defective when it does not move at all. LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...

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