LG 55LA7400 Service Manual
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LG 55LA7400 Service Manual

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See also: Owner's Manual , User Manual
LED TV
SERVICE MANUAL
CHASSIS : LA33B
MODEL : 55LA7400
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL67727527(1302-REV00)
North/Latin America
Europe/Africa
Asia/Oceania
55LA7400-UD
Internal Use Only
http://aic.lgservice.com
http://eic.lgservice.com
http://biz.lgservice.com
Printed in Korea

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  • Page 1 Internal Use Only North/Latin America http://aic.lgservice.com Europe/Africa http://eic.lgservice.com Asia/Oceania http://biz.lgservice.com LED TV SERVICE MANUAL CHASSIS : LA33B MODEL : 55LA7400 55LA7400-UD CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL67727527(1302-REV00) Printed in Korea...
  • Page 2 PRODUCT SAFETY ................. 3 SPECIFICATION ..................4 ADJUSTMENT INSTRUCTION .............. 13 EXPLODED VIEW .................. 23 SCHEMATIC CIRCUIT DIAGRAM .............. - 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 1) Performance: LGE TV test method followed 2) Demanded other specification - Safety : UL, CSA, IEC specification - EMC: FCC, ICES, IEC specification - 6 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 7 2) Humidity : ~ 80 % Storage Environment 1) Temp : -20 ~ 60 deg 2) Humidity : ~ 85 % - 7 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • 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 60.004 65.000 2D to 3D,Side by Side , Top & Bottom 1360*768 47.712 60.015 85.500 1920*1080 67.50 60.00 148.50 - 10 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 11 2D to 3D,Side-by-side , Top-and-Bottom 1920*1080 67.432 / 67.5 29.97 / 30.00 148.35/148.5 2D to 3D,Side-by-side, Top-and-Bottom, Checkerboard, Row Interleaving, Column Interleaving - 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. 4.2.6. Inspection (3) Shipment conditions, Channel pre-set - 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 ⓓ Model Name(Hex): LGTV Chassis MODEL NAME(HEX) LA33B 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. ⓔ1 ⓔ2 ⓔ3 4.4. EDID Download HDMI1 4.4.1 Overview...
  • Page 15 00 00 00 FC 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 LA33B 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 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 “wb 00 ff”, and Adj. offset if need Cool 0.271 0.270 13,000K 0.0000 Medium 0.285 0.293 9,300K 0.0000 Warm 0.313 0.329 6,500K 0.0000 - 17 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 18 55LA6205-UA 13841 33672 61725 14486 1353 41515 51-80 60LA6205-UA 32856 13841 33672 61725 14486 1353 42539 81-119 Over 120 - 18 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 19 5.5.1. Using RS232 Command Command Set ACK Transmission [A][l][][Set ID][][20][Cr] [O][K][x] or [N][G] 5.5.2. Check the menu on in-start - 19 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 20 ▪ After final inspection, press In-Stop key of the Adj. R/C and check that the unit goes to Stand-by mode - 20 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 21 - GND Test = POWER CORD GND and SIGNAL CABLE GND. - Hi-pot Test = POWER CORD GND and LIVE & NEUTRAL. (4) LEAKAGE CURRENT: At 0.5mArms - 21 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 22 RF signal in 216 Gray pattern. (12) If ADC calibration is failure, after recheck ADC pattern or condition, retry calibration - 22 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 23: Exploded View

    X-RADIATION, Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. - 23 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 24 MID_MAIN_1 2011.12.13 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 25 MID_MAIN_2 2011.12.19 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 26 MID_MAIN_3 2011.12.09 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 27 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. DDR ONE SIDE Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 28 2011.11.25 MID_POWER ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 29 2012.02.22 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. MICOM Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 30 HDMI 4 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 31 JACK HIGH / MID 2011.11.21 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 32 JACK_COMMON 2011.11.21 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 33 IR / KEY 2011.11.21 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 34 USB2_USB3 2012.7.11 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 35 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 36 JACK_COMMON 2011.11.21 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 37 LAN_VERTICAL 2012.03.08 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 38 2011.11.21 AMP_NEO ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 39 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 40 TUNER 2012.03.08 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 41 TUNER 2012.07.10 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 42 LVDS_HIGH_MID 2011.08.11 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 43 LOCAL DIMMING 2011.12.13 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 44 2011.12.01 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. T-Con Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 45 2011.12.01 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. T-Con Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 46 11.09.29 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 47 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 49 - Instruction of new sub assy’s - How to use tool - Download 8. Adjust way of new features 9. Repair guide Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 50 - Instruction of new sub assy’s - How to use tool - Download 8. Adjust way of new features 9. Repair guide Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 51 - Instruction of new sub assy’s - How to use tool - Download 8. Adjust way of new features 9. Repair guide Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 52 Model naming and Tool option Standard of 2013y Model Name 13년 모델명 변경 Description of Tool Options Tool option Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. - 6/83 - Only for training and service purposes LGE Internal Use Only...
  • Page 53 - Instruction of new sub assy’s - How to use tool - Download 8. Adjust way of new features 9. Repair guide Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 54 Better reliability on common noise • No data skew and better EMI margin • Fewer lines than mini-LVDS • Slim PCB design Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. - 8/83 - Only for training and service purposes LGE Internal Use Only...
  • Page 55 10mm) helps slimmer TV - FHD 120Hz 10Bit : 594Mbps@36Lines → 1.65Gbps@12Lines - FHD 240Hz 10Bit : 594Mbps@72Lines → 1.25Gbps@32Lines Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. - 9/83 - Only for training and service purposes LGE Internal Use Only...
  • Page 56 • Clock skew • Transmission Overhead Demerit • EMI due to clock lines : 4bit delimiter • Bandwidth limit Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. - 10/83 - Only for training and service purposes LGE Internal Use Only...
  • Page 57 - Instruction of new sub assy’s - How to use tool - Download 8. Adjust way of new features 9. Repair guide Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 58 Micom for Key/IR sensing Key + IR Front Spk Audio AMP (12W+12W) LVDS or EPI Wafer WiFi + RF(Magic Remocon receiver) Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 59 - Instruction of new sub assy’s - How to use tool - Download 8. Adjust way of new features 9. Repair guide Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 60 L/R In PC-AUDIO Sub Micom OPTIC SPDIF OUT Remote Control : according to input spec (RENESAS) Ethernet UART RS-232C only Dev Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 61 [AIN1_L/R_AADC] JK4600 TU_CVBS TU_CVBS Tuner [CVBS1P] TUNER_SIF, IF_P/N TUNER_SIF, IF_P/N [MPXP, ADCINP_DEMOD, ADCINN_DEMOD] Parallel TS / ERROR,VAL,SYNC,CLK Parallel TS / ERROR,VAL,SYNC,CLK Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 62 MICOM TUNER_SIF TR BUF [MPXP] SIDE_HP_MUTE IC6100 [AL0_ADAC] HP_LOUT / HP_ROUT TPA6138A2PWR HEAD PHONE [AR0_ADAC] HP AMP JK3700 SPDIF_OUT [ASPDIF0] JK3602 Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 63 TMDS Link 8bits MTK A2 HDMI2 HDMI2 DDC_SCL_3_JACK DDC_SDA_3_JACK TMDS Link 8bits HDMI3 HDMI3 Q3001 HDMI_CEC RENESAS X-tal WOL_CTL 32.768kHz MICOM Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 64 Motion Remote Motion Remote M_RFModule_RESET [ADIN4_SRV] Receiver Receiver [OPCTRL49] [OPCTRL50] SOC_TX [U0TX] 4Pin debugging [U0RX] SOC_RX wafer MTK A2 RENESAS MICOM Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 65 [T/C_DIF[N]] 11 AN27 [ADCINN_DEMOD] TUNER_SIF(for T2/C/S) MT5398_TS_IN[0-7] CI_TS_DATA[0-7] TU_CVBS(for 47 Ω [GPIO34-41] TS_OUT[0-7] T2/C/S) IF_AGC MT5398_TS_OUT[0-7] CI_MDI[0-7] [GPIO18-25] 47 Ω TS_IN[0-7] Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 66 VCOM VCOM_DYN VCOMLFB VGH_EVEN/VGH_ODD VGH_F/VGH_R GCLK MCLK Z_Out VCOMRFB EPI CH4 +/- EPI CH5 +/- EPI CH6 +/- EPI_LOCK6 EPI_LOCK6_SOURCE GMA4/GMA5/GAM7/GMA12/GMA14/GMA15 Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 67 I2C_SDA1 IC5800 22Ω 33Ω I2C_SCL1 STA380 (AMP) 2.7KΩ P7600 33Ω I2C_SDA6 Local dimming 33Ω 33Ω TUNER(D) I2C_SCL6 IC101 22Ω HDCP EEPROM Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 68 - Instruction of new sub assy’s - How to use tool - Download 8. Adjust way of new features 9. Repair guide Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. - 22/83 - Only for training and service purposes LGE Internal Use Only...
  • Page 69 Main / Module LVDS Cable T-con Driver LED driver / PSU 8Pin (IR+key) Cable SPK Cable RF Assy Cable WIFI Assy Cable Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. - 23/83 - Only for training and service purposes LGE Internal Use Only...
  • Page 70 - Instruction of new sub assy’s - How to use tool - Download 8. Adjust way of new features 9. Repair guide Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 71 Introductions of 13Y RF assy + Magic Remote control 목차 1. System 2. Block diagram 3. Paring method Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. - 25/83 - Only for training and service purposes LGE Internal Use Only...
  • Page 72 • Motion Data : gyro, accelerometer Voice Data Transmission • Period : 10msec • Voice sampling : 16khz 16bit Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. - 26/83 - Only for training and service purposes LGE Internal Use Only...
  • Page 73 Antenna BCM20702M (BROADCOM) Bluetooth 4.0 1Mbit (Serial Flash) X-tal 20 MHz UART Connector Bluetooth Receiver Bluetooth Remote control Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. - 27/83 - Only for training and service purposes LGE Internal Use Only...
  • Page 74 5 sec. • After unpairing, LED should be blinked for 3sec. • The remote just becomes to IR mode. Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. - 28/83 - Only for training and service purposes LGE Internal Use Only...
  • Page 75 Introductions of 13Y WIFI built in assy 목차 1. Block diagram 2. Specification Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. - 29/83 - Only for training and service purposes LGE Internal Use Only...
  • Page 76 6pin 1.25mm 3.3V 1.2V Antenn RX/TX Switch DM3030 2.4G/5G DP, DN BCM43236B RX/TX Antenn Crysta Switch DM3030 2.4G/5G 20MHz Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. - 30/83 - Only for training and service purposes LGE Internal Use Only...
  • Page 77 WIFI Built in ass’y Specification Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. - 31/83 - Only for training and service purposes LGE Internal Use Only...
  • Page 78 - Instruction of new sub assy’s - How to use tool - Download 8. Adjust way of new features 9. Repair guide Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 79 12Y Widevine & HDCP 2.0 & NETFLX Contents 표지 1. Widevine? 2. HDCP 2.0 & NETFLIX? 3. DTCP? Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. - 33/83 - Only for training and service purposes LGE Internal Use Only...
  • Page 80 [Widevine Key] Widevine Key is unique data stored TV for using Widevine. Widevine Key is unique data stored TV for using Widevine. Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. - 34/83 - Only for training and service purposes...
  • Page 81 Netflix the services maintain a huge selection of movies and latest releases and offer DVD rentals via mail & online streaming. Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. - 35/83 - Only for training and service purposes LGE Internal Use Only...
  • Page 82 •Content Key which is used to encrpt the content being exchanged. •Content Key which is used to encrpt the content being exchanged. Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. - 36/83 - Only for training and service purposes...
  • Page 83 - How to use tool - Download 8. Adjust way of new features 9. Repair guide 10. The latest issue and concerning issue Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only...
  • Page 84 F. Exterior error Exterior defect First of all, Check whether there is SVC Bulletin in GCSC System for these model. Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. - 38/83 - Only for training and service purposes LGE Internal Use Only...
  • Page 85 Other : PSU Module Exchange Module itself (1) A-4/5 Exchange Module itself (2) A-5/5 Continue to the next page Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. - 39/83 - Only for training and service purposes LGE Internal Use Only...
  • Page 86 Always check & record S/W Version and White Replace Main Board Re-enter White Balance value Balance value before replacing the Main Board Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. - 40/83 - Only for training and service purposes LGE Internal Use Only...
  • Page 87 No Video/ replace voltage? No audio ( 3.5V,12V,20V or MAIN B/D 24V…) Replace Power Board and repair parts Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. - 41/83 - Only for training and service purposes LGE Internal Use Only...
  • Page 88 Contact with signal distributor Tuner soldering Picture? or broadcaster (Cable or Air) Normal Picture? Replace Main B/D Close Close Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. - 42/83 - Only for training and service purposes LGE Internal Use Only...
  • Page 89 Normal (match with installed ANT) or broadcaster Picture? (Cable or Air) Normal Picture? Close Close Close Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. - 43/83 - Only for training and service purposes LGE Internal Use Only...
  • Page 90 RGB/ Check external External device HDMI/DVI device and /Cable Replace Main B/D error cable normal Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. - 44/83 - Only for training and service purposes LGE Internal Use Only...
  • Page 91 Main B/D External Input, Component, HDMI/ RGB and HDMI/DVI by connecting Jig, pattern Generator ,Set-top Box etc. Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. - 45/83 - Only for training and service purposes LGE Internal Use Only...
  • Page 92 Normal ※ Replace Main B/D voltage? Close Normal Check ST-BY 3.5V voltage? ☞A18 Replace Power B/D Replace Power Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. - 46/83 - Only for training and service purposes LGE Internal Use Only...
  • Page 93 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 Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. - 47/83 - Only for training and service purposes LGE Internal Use Only...
  • Page 94 Speaker off Cancel OFF Replace Power Board and repair parts Check Speaker Disconnection Replace MAIN Board disconnection Replace Speaker Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. - 48/83 - Only for training and service purposes LGE Internal Use Only...
  • Page 95 Connect and check Normal Check and fix other external device audio? external device Check and fix external device Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. - 49/83 - Only for training and service purposes LGE Internal Use Only...
  • Page 96 If R/C operate, Normal Close operating? Explain the customer cause is interference from light in room. Replace R/C Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. - 50/83 - Only for training and service purposes LGE Internal Use Only...
  • Page 97 Check and fix DVI, Optical Replace Main B/D Fix in external device/cable Recognition error accordance with technical information Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. - 51/83 - Only for training and service purposes LGE Internal Use Only...
  • Page 98 ※ 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) Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. - 52/83 - Only for training and service purposes LGE Internal Use Only...
  • Page 99 ☞A28 Cabinet Replace cabinet damage Remote controller Replace remote controller damage Stand Replace stand dent Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. - 53/83 - Only for training and service purposes LGE Internal Use Only...
  • Page 100 D. Function error_ No response in remote Remote controller operation checking method controller, key error D. VCOM Adjustment Sequence of the Vcom adjustment Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. - 54/83 - Only for training and service purposes LGE Internal Use Only...
  • Page 101 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 ⓒ 2013 LG Electronics. Inc. All right reserved. - 55/83 - Only for training and service purposes...
  • Page 102 SMAW200-H18S1 (YEONHO) Power on INV_ON 3.5V PDIM #1(PWM Dim #1) 3.5V PDIM #2(PWM Dim #2) L/DIM0_VS L/DIM0_MOSI L/DIM0_SCLK Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. - 56/83 - Only for training and service purposes LGE Internal Use Only...
  • Page 103 MENU - Channel Manual - select channel When the signal is strong, use the attenuator (-10dB, -15dB, -20dB etc.) Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. - 57/83 - Only for training and service purposes LGE Internal Use Only...
  • Page 104 1. Checking method for remote controller for adjustment Version Press the IN-START with the remote controller for adjustment Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. - 58/83 - Only for training and service purposes LGE Internal Use Only...
  • Page 105 LCD TV connection diagram (1) date <ALL MODELS> As the part connecting to the external input, check the screen condition by signal Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. - 59/83 - Only for training and service purposes LGE Internal Use Only...
  • Page 106 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 ⓒ 2013 LG Electronics. Inc. All right reserved. - 60/83 -...
  • Page 107 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 ⓒ 2013 LG Electronics. Inc. All right reserved. - 61/83 - Only for training and service purposes LGE Internal Use Only...
  • Page 108 Solder defect, CNT Broken Solder defect, CNT Broken T-Con Defect, CNT Broken Abnormal Power Section Solder defect, Short/Crack Solder defect, Short/Crack Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. - 62/83 - Only for training and service purposes LGE Internal Use Only...
  • Page 109 Abnormal Power Section Solder defect, Short/Crack Abnormal Display Fuse Open, Abnormal power section Solder defect, Short/Crack Noise GRADATION GRADATION Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. - 63/83 - Only for training and service purposes LGE Internal Use Only...
  • Page 110 Appendix : Exchange PSU(LED driver) No Light Dim Light Dim Light Dim Light No picture/Sound Ok Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. - 64/83 - Only for training and service purposes LGE Internal Use Only...
  • Page 111 Panel Mura, Light leakage Press damage Crosstalk Press damage Crosstalk Un-repairable Cases In this case please exchange the module. Press damage Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. - 65/83 - Only for training and service purposes LGE Internal Use Only...
  • Page 112 Un-repairable Cases In this case please exchange the module. Horizontal Block Gate TAB IC Defect Gate TAB IC Defect Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. - 66/83 - Only for training and service purposes LGE Internal Use Only...
  • Page 113 LG Logo indicator Bright / Time ST-BY condition: On Power ON condition: Off (but you can select On by menu) Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. - 67/83 - Only for training and service purposes LGE Internal Use Only...
  • Page 114 SMAW200-H18S1 (YEONHO) Power on INV_ON 3.5V PDIM #1(PWM Dim #1) 3.5V PDIM #2(PWM Dim #2) L/DIM0_VS L/DIM0_MOSI L/DIM0_SCLK Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. - 68/83 - Only for training and service purposes LGE Internal Use Only...
  • Page 115 SMAW200-H18S1 (YEONHO) Power on INV_ON 3.5V PDIM #1(PWM Dim #1) 3.5V PDIM #2(PWM Dim #2) L/DIM0_VS L/DIM0_MOSI L/DIM0_SCLK Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. - 69/83 - Only for training and service purposes LGE Internal Use Only...
  • Page 116 1. Press the IN-START button of the remote controller for adjustment 2. Check the entry into adjustment item 3 Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. - 70/83 - Only for training and service purposes LGE Internal Use Only...
  • Page 117 1. Press the MENU button on the remote controller 2. Select the AUDIO function of the Menu 3. Select TV Speaker Or Other Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. - 71/83 - Only for training and service purposes...
  • Page 118 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 ⓒ 2013 LG Electronics. Inc. All right reserved. - 72/83 -...
  • Page 119 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. Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. - 73/83 -...
  • Page 120 ■ Push the OK key to store the value. Then the message “Saving OK” is pop. ■ Press the exit key to finish V-COM adjustment. Copyright ⓒ 2013 LG Electronics. Inc. All right reserved. - 74/83 - Only for training and service purposes...

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