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LG 47LA790V Service Manual

Chassis : ld34d
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LED TV
SERVICE MANUAL
CHASSIS : LD34D
MODEL: 47LA790V/W/9
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL67733201 (1302-REV00)
North/Latin America
Europe/Africa
Asia/Oceania
47LA790V/W/9-ZA
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 : LD34D MODEL: 47LA790V/W/9 47LA790V/W/9-ZA CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL67733201 (1302-REV00) Printed in Korea...

  • Page 2: Table Of Contents

    SERVICING PRECAUTIONS ..............4 SPECIFICATION ..................6 ADJUSTMENT INSTRUCTION .............. 13 EXPLODED VIEW .................. 22 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: Specification

    96.5E/ HELLASAT2 39.0E/ HISPASAT1CDE 30.0W/ HOTBIRD 13.0E/ INTELSAT10&7 68.5E/ INTELSAT15 85.2E/ INTELSAT904 60.0E/ NILESAT 7.0W/ THOR 0.8W/ TURKSAT 42.0E/ YAMAL201 90.0E - 6 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 7 DVB-S mode : 1/2, 2/3, 3/4, 5/6, 7/8 DVB-S2 mode : 1/2, 2/3, 3/4, 3/5, 4/5, 5/6, 8/9, 9/10 Input Voltage AC 100 ~ 240V 50/60Hz - 7 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 8 29.976 / 30.00 74.25 HDTV 1080P 1920*1080 56.250 148.5 HDTV 1080P 1920*1080 67.43 / 67.5 59.94 / 60 148.35/148.50 HDTV 1080P - 8 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 9 2D to 3D, Side by Side(Half), Top & Bottom, Checker Board, Single Frame Sequential, 1920*1080 56.250 148.5 HDTV 1080P Row Interleaving, Column Interleaving - 9 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 10 Primary(HDTV 1080P) 56.250 148.5 Side-by-side(half) Secondary(HDTV 1080P) Top-and-Bottom Primary(HDTV 1080P) 67.43 / 67.5 59.94 / 60 148.35/148.50 Side-by-side(half) Secondary(HDTV 1080P) - 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 & Bottom HDTV 1080P 1920*1080 33.71 29.97 74.176 2D to 3D, Side by Side, Top & Bottom HDTV 1080P - 11 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 12 Frame Line Column Side by Side Top & Bottom Checker board 2D to 3D Sequential Packing Interleaving Interleaving iii. - 12 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 13: Adjustment Instruction

    ▪ Printer Out (MAC Address Label) - Pattern : Horizontal 100% Color Bar Pattern - Pattern level : 0.7 ± 0.1 Vp-p - Image - 13 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 14 (3) Serial number D/L must be conformed when it is produced in production line, because serial number D/L is mandatory by D-book 4.0. - 14 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 15 Data 0 3) Result value - Normally status for download : OKx - Abnormally status for download : NGx - 15 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 16 MODEL NAME(HEX) adjustment) LG TV 00 00 00 FC 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 (LG TV) 4.1. EDID(The Extended Display Identification Data)/DDC(Display Data Channel) download ⓔ Checksum(LG TV): Changeable by total EDID data.

  • Page 17: White Balance Adjustment

    1) Surrounding Temperature : 25 °C ± 5 °C 2) Warm-up time: About 5 Min 3) Surrounding Humidity : 20 % ~ 80 % - 17 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 18: Color Temperature

    ON, OFF. Default is inner(ON). By selecting OFF, Warm 0.310 0.325 6500 K 0.0000 you can adjust using RF signal in 206 Gray pattern. - 18 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 19 11-20 (3) Don't wear a 3D Glasses, check the picture like below. 21-30 31-40 41-50 51-80 81-119 Over 120 - 19 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 20 → OK, Else → NG (2) After press LNB OFF key, ‘18 V LED’ and ‘22 KHz tone LED’ should be OFF. - 20 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 21 (2) Select "Tool Option 1" and push "OK" key. (3) Punch in the number. (Each model has their number) - 21 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 22: Exploded View

    X-RADIATION, 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 MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. H13 D CHIP Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 24 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. MAIN POWER 11/05/31 Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 25 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR MAIN AUDIO/VIDEO THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 26 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. MAIN DDR Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 27 2012-10-20 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. PCMCIA Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 28 2012-12-07 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR POWER THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • 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 rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 30 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. HDMI Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 31 JACK HIGH/MID 2012.10.09 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 rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 32 IR / KEY 2012.10.10 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 rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 33 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 rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 34 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR USB JACK THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 35 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. SCART GENDER Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 36 LAN_VERTICAL 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 rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 37 2012-09-12 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR ETHERNET THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 38 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR AUDIO[ST] THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 39 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR AUDIO[ST] THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 40 SCART AUDIO AMP 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 rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 41 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 rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 42 CI SLOT 2011.10.31 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 rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 43 CI SLOT 2011.04.17 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 rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 44 2012.07.10 TUNER 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 rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 45 TU_SYMBOL 2012.09.14 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 rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 46 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 rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 47 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LVDS INTERFACE Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 48 LOCAL DIMMING 2012.09.14 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 rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 49 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 rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 50 2012.09.14 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. EPI_CAP Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 51 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 rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 53 2013 LED/LCD TV Engineering guide < Applicable Model : High-end Platform > XXLA79*-Z* Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 1 / 90 Only for training and service purposes...
  • 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 rights reserved. LGE Internal Use Only 2 / 90 Only for training and service purposes...
  • Page 55 -Slim S-PCB design (14mm  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 rights reserved. LGE Internal Use Only 3 / 90...
  • Page 56 • Clock skew • Transmission Overhead Demerit • EMI due to clock lines : 4bit delimiter • Bandwidth limit Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 4 / 90 Only for training and service purposes...
  • Page 57 From Smart phone to TV Samrt phone close to NFC Tag Player choose From TV to Smart phone Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 5 / 90 Only for training and service purposes...
  • Page 58 Speaker (Audio Out) in Analogue out, then choose External Speaker (Audio Out) in sound out. Headphone External Speaker 2CH stereo Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 6 / 90 Only for training and service purposes...
  • Page 59 Micom for Key/IR/Logo sensing To PSU PMIC Audio AMP EPI Wafer To module Level shifter WIFI/BT Front Spk Key+IR+Logo Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 7 / 90 Only for training and service purposes...
  • Page 60 USB 3.0 USB1(USB3.0) USB 2.0 X-TAL USB2(USB2.0) 24MHZ USB 2.0 USB3(USB2.0) DDR3 DDR3 eMMC 4Gb×2 4Gb×2 4GB×1 (1600) (1600) Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 8 / 90 Only for training and service purposes...
  • Page 61 33 Ω IC7700 [SCL2/GPIO78] SII9587CNUC TPS65178RSLR AJ33 [CSDA] I2C_SDA5 [SDA] I2C_SDA2_SOC HDMI_SW 33 Ω [SDA4] 33 Ω AR17 [SDA2/GPIO77] Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 9 / 90 Only for training and service purposes...
  • Page 62 H13-A (SDRAM_VDDQ) H13-A (VDD_XTAL) H13-A (AUAD_REF) EMMC(VCC) H13-A (VDD25_REF) EMMC(VCCQ) TUNER(+3.3V_TU) 5V Normal HDMI SW AUDIO AMP CI Slot Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 10 / 90 Only for training and service purposes...
  • Page 63 TS_OUT_VAL [CVBS] 8 CI_TS_SYNC B29[TPI_SOP] TS_OUT_SYNC TUNER_SIF H18[AAD_ADC_SIF] [SIF] 6 100 Ω CI_TS_DATA[0-7] TPI_DATA[0-7] 33 Ω TPO_DATA[0-7] CI_IN_TS_DATA[0-7] Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 11 / 90 Only for training and service purposes...
  • Page 64 COMP2_Y_IN_SOC Component COMP2_Y_IN_SOC_SOY COMP2_PR_IN_SOC Phone JACK COMP1_Y/Pb/Pr [PB2/Y2/SOY2/PR2_IN] Tuner TU_CVBS_ISOC TU_CVBS [CVBS_IN1] TUNER_SIF_TU TUNER_SIF DIF[P/N] ADC_I_INP/INN [AAD_ADC_SIF] [ADC_I_INP/INN] Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 12 / 90 Only for training and service purposes...
  • Page 65 AMP_MUTE MICOM SIDE_HP_MUTE TUNER_SIF [AAD_ADC_SIF] TPA6138A2 HEADPHONE HP_L/ROUT_MAIN Headphone [AUDA_OUTL] [PHY0_ARC_OUT_0] [IEC958OUT] Phone Jack LINE OUT SPDIF_OUT SPDIF_OUT_ARC Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 13 / 90 Only for training and service purposes...
  • Page 66 HDMI4 (IC3000 / R5F100GEAFB) TMDS Link 8bits CEC_REMOTE DDC_I2C 2bits HDMI_HPD_4 MHL_DET MHL OCP 5V_HDMI_4 (IC3202 / TPS2554) Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 14 / 90 Only for training and service purposes...
  • Page 67 50~39 TX3P/N (EPI CH4 ±) 32/31 TX4P/N (EPI CH5 ±) 24/23 TX5P/N (EPI CH6 ±) 20/19 TX_LOCKN EPI_LOCK6_SOURCE Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 15 / 90 Only for training and service purposes...
  • Page 68 CTRLP Diode GAM4/5/7/12/14/15 6-Ch Gamma Buffer(DAC output) VCOM_P VCOM_N Vcom reference & gain VCOM_LOOP PMIC_RESET Reset PMIC TPS65178 Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 16 / 90 Only for training and service purposes...
  • Page 69 Motion Remote M_RFModule_RESET [GPIO13] Receiver M_REMOTE_RTS [UART1_RTS] M_REMOTE_CTS [UART1_CTS] SOC_TX 4Pin debugging [UART0_RXD] SOC_RX [UART0_TXD] Wafer LG1154D_H13D RENESAS MICOM Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 17 / 90 Only for training and service purposes...
  • Page 70 Main / Module EPI Cable 50& 50Pin LED driver / PSU IR 8Pin Cable WiFi 6Pin + RF 8Pin Cable SPK Cable Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 18 / 90 Only for training and service purposes...
  • Page 71 Interconnection - 2 47LA790V-ZA [PCBs] IR Assy [Cables] IR to Local Key 3Pin Cable IR to Logo Assy 4Pin Cable Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 19 / 90 Only for training and service purposes...
  • Page 72 Introductions of 13Y RF ass’y + Magic Remote control 1. System 2. Remote Buttons 3. MR13 Block Diagram 4. Function List 5. Pairing/Un-pairing Method Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 20 / 90 Only for training and service purposes...
  • Page 73 • Motion Data : gyro, accelerometer  Voice Data Transmission • Period : 10msec • Voice sampling : 16khz 16bit Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 21 / 90 Only for training and service purposes...
  • Page 74 0x09 0x8009 AUTO_WAKEUP 0x800C VOICE_START 0x800A Logical VOICE_STOP 0x800D Buttons POINT_START 0x803E M4 Remote MR13P Remote POINT_STOP 0x803F Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 22 / 90 Only for training and service purposes...
  • Page 75 2.8V LDO AA x 2 Battery uP0108NEC5-28 TI TPS61097 uP0108NEC5-28 Connector SC70 SC70 SOT23-5 Bluetooth Receiver Bluetooth Remote control Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 23 / 90 Only for training and service purposes...
  • Page 76 Battery Boost up Regulator LDO1 uP0108NEC5-28 RF, Gyro, Accelerometer Power Supply LDO2 uP0108NEC5-28 Audio Codec, Mic. Power Supply Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 24 / 90 Only for training and service purposes...
  • Page 77 5 sec. • After unpairing, LED should be blinked for 3sec. • The remote just becomes to IR mode. Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 25 / 90 Only for training and service purposes...
  • Page 78 Introductions of 13Y WIFI built in ass’y 1. Wi-Fi built in Ass’y feature 2. Wi-Fi built in Ass’y specification Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 26 / 90 Only for training and service purposes...
  • Page 79 1.2V USB interface RX/TX Switch Antenna 2.4G/5G DM3030 DP, DN BCM43236B RX/TX Switch Antenna Crystal 2.4G/5G DM3030 20MHz Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 27 / 90 Only for training and service purposes...
  • Page 80 WIFI Built in ass’y Specification Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 28 / 90 Only for training and service purposes...
  • Page 81 2. HDCP 2.0 & NETFLIX? 3. DTCP? 4. Changed BOM 2012. 12. 08 LCD TV R&D Lab LCD TV / HW1 team Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 29 / 90 Only for training and service purposes...
  • Page 82 (Because operation unique key should be downloaded for Widevine , Widevine key dowmload by NSU is impossible.) [Widevine Key] Widevine Key is unique data stored TV for using Widevine. Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 30 / 90 Only for training and service purposes...
  • Page 83  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 rights reserved. LGE Internal Use Only 31 / 90 Only for training and service purposes...
  • Page 84 •Exchage Key which is used to set up and protect content streams. •Content Key which is used to encrpt the content being exchanged. Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 32 / 90...
  • Page 85 Changed Item : Separate HDCP check box. - HDCP 2.0 Tx - HDCP 2.0 Rx - HDCP 1.4 Rx Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 33 / 90 Only for training and service purposes...
  • Page 86 Exterior defect 51, 52 First of all, Check whether there is SVC Bulletin in GCSC System for these model. Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 34 / 90 Only for training and service purposes...

  • Page 87: Video Error_Color Error

    Defected Type caused by T-Con/ Inverter/ Module Exchange Module itself (1) A-4/5 Exchange Module itself (2) A-5/5 Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 35 / 90 Continue to the next page Only for training and service purposes...
  • Page 88 D. Function error_ No response in Remote controller operation checking method remote controller, key error D. VCOM Adjustment Sequence of the Vcom adjustment Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 36 / 90 Only for training and service purposes...

  • Page 89: Date

    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 rights reserved. LGE Internal Use Only 37 / 90 Only for training and service purposes...
  • Page 90 No Video/ replace voltage? No audio ( 3.5V,12V,20V or 24V…) MAIN B/D Replace Power Board and repair parts Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 38 / 90 Only for training and service purposes...
  • Page 91 Contact with signal distributor Normal Tuner soldering Picture? or broadcaster (Cable or Air) Normal Picture? Replace Main B/D Close Close Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 39 / 90 Only for training and service purposes...
  • Page 92 Normal (match with installed ANT) or broadcaster Picture? (Cable or Air) Normal Picture? Close Close Close Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 40 / 90 Only for training and service purposes...
  • Page 93 Check external RGB/ External device device and Replace Main B/D HDMI/DVI /Cable cable error normal Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 41 / 90 Only for training and service purposes...
  • Page 94 Main B/D External Input, Component, normal? HDMI/ RGB and HDMI/DVI by connecting Jig, pattern Generator ,Set-top Box etc. Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 42 / 90 Only for training and service purposes...
  • Page 95 ※ 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 rights reserved. LGE Internal Use Only 43 / 90 Only for training and service purposes...
  • Page 96 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 rights reserved. LGE Internal Use Only 44 / 90 Only for training and service purposes...
  • Page 97 Speaker off Cancel OFF Replace Power Board and repair parts Check Speaker Replace MAIN Board Disconnection disconnection Replace Speaker Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 45 / 90 Only for training and service purposes...
  • Page 98 Connect and check Normal Check and fix other external device audio? external device Check and fix external device Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 46 / 90 Only for training and service purposes...
  • Page 99 Normal Close If R/C operate, operating? Explain the customer cause is interference from light in room. Replace R/C Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 47 / 90 Only for training and service purposes...
  • Page 100 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 rights reserved. LGE Internal Use Only 48 / 90 Only for training and service purposes...
  • Page 101 “Part related to nose” in the Owner’s Manual. (For models without any fix information, provide the description) Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 49 / 90 Only for training and service purposes...
  • Page 102 ☞A28 Cabinet Replace cabinet damage Remote Replace remote controller controller damage Stand Replace stand dent Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 50 / 90 Only for training and service purposes...
  • Page 103 (match with AP and ether setting) (WiFi = AP) Picture? (Wired = ethernet port) Normal Picture? Close Close Close Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 51 / 90 Only for training and service purposes...
  • Page 104 TV that is supported CI+ 1.3 Old version of CI+ 1.2 CAM  Check SVC Bulletin Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 52 / 90 Only for training and service purposes...
  • Page 105 <XXLA79XX> After turning on the power and disassembling the case, check with the naked eye, whether you can see light from 4 locations. Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 53 / 90 Only for training and service purposes...
  • Page 106 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. enter the value after replacing the MAIN BOARD. Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 54 / 90...
  • Page 107 (Power Board ↔ Main Board) SMAW200-H24S Power on Inverter On/off 3.5V PWM Dim #1 3.5V PWM Dim #2 L/DIMO_VS L/DIM0_MOSI L/DIM0_SCLK Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 55 / 90 Only for training and service purposes...
  • Page 108 MENU  support  signal test  select channel When the signal is strong, use the attenuator (-10dB, -15dB, -20dB etc.) Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 56 / 90 Only for training and service purposes...
  • Page 109 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 rights reserved. LGE Internal Use Only 57 / 90 Only for training and service purposes...
  • Page 110 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 rights reserved. LGE Internal Use Only 58 / 90 Only for training and service purposes...
  • Page 111 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 rights reserved. LGE Internal Use Only...
  • Page 112 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 rights reserved. LGE Internal Use Only 60 / 90 Only for training and service purposes...
  • Page 113 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 rights reserved. LGE Internal Use Only 61 / 90 Only for training and service purposes...
  • Page 114 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 rights reserved. LGE Internal Use Only 62 / 90 Only for training and service purposes...
  • Page 115 Appendix : Exchange LPB(LED driver) No Light Dim Light Dim Light Dim Light Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 63 / 90 Only for training and service purposes...
  • Page 116 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 rights reserved. LGE Internal Use Only 64 / 90 Only for training and service purposes...
  • Page 117 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 rights reserved. LGE Internal Use Only 65 / 90 Only for training and service purposes...
  • Page 118 Front LOGO LED control in the status of Power On Condition: Menu  Option  LG Logo Light  Duration(off, off after10min) Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 66 / 90 Only for training and service purposes...
  • Page 119 (Power Board ↔ Main Board) SMAW200-H24S Power on Inverter On/off 3.5V PWM Dim #1 3.5V PWM Dim #2 L/DIMO_VS L/DIM0_MOSI L/DIM0_SCLK Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 67 / 90 Only for training and service purposes...
  • Page 120 (Power Board ↔ Main Board) SMAW200-H24S Power on Inverter On/off 3.5V PWM Dim #1 3.5V PWM Dim #2 L/DIMO_VS L/DIM0_MOSI L/DIM0_SCLK Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 68 / 90 Only for training and service purposes...
  • Page 121 Entry method 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 rights reserved. LGE Internal Use Only 69 / 90 Only for training and service purposes...
  • Page 122 1. Press the MENU button on the remote controller 2. Select the SOUND function of the Menu 3. Change TV Sound Out to TV Speaker Copyright © 2013 LG Electronics. Inc. All rights reserved. LGE Internal Use Only 70 / 90...
  • Page 123 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 rights reserved. LGE Internal Use Only...
  • Page 124 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 rights reserved. LGE Internal Use Only...
  • Page 125 ■ 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 rights reserved. LGE Internal Use Only 73 / 90...

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