LG 98UB9800 Service Manual
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LG 98UB9800 Service Manual

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LED TV
SERVICE MANUAL
CHASSIS : LA41F
MODEL : 98UB9800/9810
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL68086427 (1410-REV01)
North/Latin America
Europe/Africa
Asia/Oceania
98UB9800/9810-UB
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 : LA41F MODEL : 98UB9800/9810 98UB9800/9810-UB CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL68086427 (1410-REV01) Printed in Korea...

  • Page 2: Contents

    PRODUCT SAFETY ................. 3 SPECIFICATION ..................6 ADJUSTMENT INSTRUCTION .............. 13 EXPLODED VIEW .................. 25 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

    - Safety : UL, CSA, CE, IEC specification - EMC : FCC, ICES, CE, IEC specification - Wireless : Wireless HD Specification (Option) - 6 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 7 1.06 B (10-bit) Except FHD 60Hz models 16.7 M (8-bit) Only FHD 60Hz models Surface Treatment Hard coating (2H), Anti-glare - 7 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 8 UHD only 4096*2160 53.95 23.97 296.703 Only UD Model, Port3 UHD only 4096*2160 24.00 297.00 Only UD Model UHD only - 8 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 9 67.5 30.00 UDTV 2160P UHD only 4096*2160 60.00 UDTV 2160P UHD only(Port3) 4096*2160 59.94 593.407 UDTV 2160P UHD only(Port3) - 9 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 10 59.94 1920 x 1080i 33.75 33.72 59.94 1920 x 1080p 67.5 67.432 59.94 28.12 26.97 23.976 33.75 33.71 29.97 - 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(Half), Top & Bottom WiDi 1280x720p 30 / 60 1920 x 1080p 30 / 60 Others 2D to 3D - 11 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 12 **Remark: 3D Input mode Side by Side Top & Bottom Checkerboard Single Frame Frame Packing Line Column Sequential Interleaving Interleaving LLLLL - 12 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 13: Adjustment Instruction

    12) Motion Remote controller Inspection 13) 3D Function test 14) Outgoing Condition Configuration 15) Sound spec 16) Factoring Option Data input. - 13 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 14 4) Click “RUN”, Check “OK” or “NG” 5) If the TV IS Turn On, Check the updated SW Version and Tool Option. - 14 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 15: Edid Block 0, Bytes

    There are two methods of downloading the edid data ⓓ Model Name(Hex): LGTV It is a VESA regulation. A PC or a MNT will display an optimal ⓔ Checksum(LG TV): Changeable by total EDID data. resolution through information ⓕ Vendor Specific(HDMI) Sharing without any necessity of user input.
  • Page 16 EDID Block 0, Bytes 0-127 EDID Block 0, Bytes 0-127 EDID Block 1, Bytes 128-255 EDID Block 1, Bytes 128-255 - 16 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 17: Edid Block 1, Bytes

    # AC3 HDMI4 (C/S: E7 5B) # PCM HDMI1(C/S: E7 ED) EDID Block 0, Bytes 0-127 EDID Block 1, Bytes 128-255 - 17 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 18 AC3 FFh PCM FFh - Adjustment mode : Three modes – Cool / Medium / Warm HDMI1 HDMI2 HDMI3 HDMI4 - 18 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 19 R/G/B gain to 192 (default data) and decrease the Offset adj.(internal white pattern) others. Offset adj. completed End White Balance adj. (internal pattern disappears ) - 19 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 20 (If you miss the upper condition, the coordinates of W/B can be Cool Medium Warm lower than the spec.) Aging time (Min) 10-19 20-35 36-49 50-79 80-119 Over 120 - 20 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 21 1) Confirm Key input Data at the “IN START” MENU Mode Command Set ACK Transmission [A][l][][Set ID][][20][Cr] [O][K][x] or [N][G] - 21 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 22 (B) When 3D OSD appear automatically , then select green button. * Remark: Inspect in Power Only Mode and check SW version in master equipment - 22 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 23 (1) RF input: Mono, 1KHz sine wave signal, 100% Modulation (2) CVBS, Component: 1KHz sine wave signal (0.4Vrms) (3) RGB PC: 1KHz sine wave signal (0.7Vrms) - 23 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 24 - If Test is failed, Buzzer operates. - If Test is passed, GOOD Lamp on and move to next process automatically. - 24 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 25: Exploded View

    X-RADIATION, Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. - 25 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 26 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. H13 D CHIP 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 THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. MAIN POWER 11/05/31 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 MAIN AUDIO/VIDEO 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 29 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. MAIN DDR LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 30 2013-12-17 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. PCMCIA LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 31 2013-12-17 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 32 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 33 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 34 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 35 2014.03.11 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 36 2013.12.17 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 37 2013.12.17 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 38 JACK HIGH/MID 2013.12.17 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 39 IR / KEY 2013.12.17 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 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 41 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR USB 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 42 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. SCART GENDER LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 43 2012.12.17 LAN_VERTICAL 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 44 2013-12-17 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 45 FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS 2013.12.17 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 46 FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS 2013.12.17 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 FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS 2013.12.17 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 48 FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS 2013.12.17 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 49 FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS 2013.12.17 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 50 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 51 SCART AUDIO AMP 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 52 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 53 2012.12.17 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. JAPAN_BCAS LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 54 TUNER 2013.12.17 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 55 TU_SYMBOL_EU 2014.03.12 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 56 FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR RS232C 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 57 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 58 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR SMD GASKET 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 59 2013.12.17 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 60 FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS 2013.12.17 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 61 2013.12.17 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. D14_DDR LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 62 FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS 2013.12.17 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 63 FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS 2013.12.17 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 64 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR U14 DDR 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 65 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR U14 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 66 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR U_LVDS INPUT 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 67 2013.12.17 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR Output_wafer 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 68 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR 0.1uF THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. 2013.12.17 4th layer URSA7_DDR LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 69 FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS 2013.12.17 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 70 2013.12.17 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. U_Power LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 71 FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS 2013.12.17 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 72 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 73 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 74 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. Motor LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 75 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 77 Overview for ’14 ULTRA HD Model (Hardware) LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 78 △ It is different form each HDMI port spec. We offer a HDMI cable for HDMI 1.4 legacy issue. HDMI2.0 HDMI1.4 LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 79 • Lh, Rh Height 10+10W Woofer (65,55”) • Woofer • Lf / Rf •(Lf+Rf)/2 / (Lf+Rf)/2 15+15W Front : 내장 speaker LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. (woofer/stereo) Only for training and service purposes...
  • Page 80 2. Color sensor Adjusts the image quality and brightness based on the surrounding environment. 2014 model : Intelligent sensor + Color sensor LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 81 21:9 98” 84” ’13 Carry 802.11ac Over 79” UB98 65” 55” 16:9 65” UB95 55” 802.11n (BT Combo) 55” UB85 49” LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 82 LCD TV Repair Guide `14 years New Models LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 83 HDMI switch B/T Wifi Audio AMP Local Key +IR Video processor (LGE7411:URSA9), DDR Memory Flash Memory 4K processor_Digital(LG1512), DDR Memory eMMC Memory LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 84 13. USB / Wi-Fi / M-REMOTE / UART 14. I2C Map (H13) 15. I2C Map (MICOM) 16. GPIO (H13) 17. GPIO (MICOM) 2014년 02월 13일 TV사업부 TV제품개발1팀 LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 85 1920X2160@60p Vby1 16 Lane 32bit(16bitX2) 4K@120Hz Super Resolution 담당 (전용) Super Resolution Ready (for 보급형) MEMC , 3D 등 기능 담당 LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 86 Vx1 2Lane 2:1 Mux 16x4 16x2 16x4 DDR3 DDR3 DDR3 1Gb x 2(1866) 1Gb x 4 (1866) 1Gb x 4 (1866) LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 87 DCO I2Cx1 HDMI GPIOIx16 HDMI-Rx 1.4 SPLL DPLL (1-port PHY) DDR3 Controller DDR3 Controller 3D, ARC, 4kx2k DDR3 PHY DDR3 PHY LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 88 Data Path Diagram LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 89 XTAL SSPLL DISPLL (24.75MHz) DDR3 PHY (x32) DDR3 PHY (x16) Clock/Reset Gen DDR3-1600 DDR3-1600 DDR3-1600 DDR3-1600 1Gbit 1Gbit 1Gbit 1Gbit LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 90 M1_DDR_RESET_N_D14 HDMI1_TX1N M1_DDR_DQ0-15_D14(16bit) HDMI1_TX1P 1920x2160@60p IC12102 M1_DDR_DQS0-1_D14(2bit) HDMI1_TX2N M1_DDR_DM0-1_D14(2bit) HDMI1_TX2P DDR3 HDMI1_TXCN HDMI1_TXCP 1G bit IC3501 M1_U_CLK_D14 DEV_HDMI_MUX1 M1_U_CLKN_D14 HDMI1_DDC_DA HDMI1_DDC_CK LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 91  23X23 FcBGA 1.4b I2C(M/S) HDMI Switch HDMI Rx Separate OSD 1.4b GPIO JTAG Ready JTAG Serial Flash SPI(M) UART RS-232C Crystal LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 92 GPIO[1] HDMI_1_RX Switch [GPIO[1]] FHD_D9_SET 2560*1080@60p [GPIO[0]] URSA7/9_SET HDMI_U14_1 RXBSCL_U14 1920*1080@60p HDMI_0_RX RXBSDL_U14 U14_UART_RX_1 UART U14_UART_TX_1 HDMI_Splitter HDMI_0_TX HDMI to H13 LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 93 BIT[2/1/0] UD_V x 1 Lane수 UART2_TX DIM5/GPIO[37] URSA_BIT0/1/2 DIM6/GPIO[38] 0/0/0 4K@120P _16Lanes DIM7/GPIO[39] 0/0/1 4K@60P _ 8Lanes 0/1/0 5K@120P _ 20Lanes LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 94 ADC_I_INP [IF_P] 6 FILTER U17 [ADC_I_INP] IF_N ADC_I_INN [IF_N] 7 V17 [ADC_I_INN] TUNER_SIF TU_SIF_TU 9 LG1154AN TU_CVBS TU_CVBS_TU 8 IF_AGC IF_AGC_TU LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 95 AUAD_L/R_CH3_IN SC_L/R_IN [AUAD_L/R_CH3_IN] COMP2_PB_IN_SOC COMP2_Y_IN_SOC Component 1 COMP2_Y_IN_SOC_SOY Phone JACK COMP2_PR_IN_SOC COMP1_Y/Pb/ [PB2/Y2/SOY2/PR2_IN] SPDIF OUT SPDIF_OUT [IEC958OUT] H/P JACK HP_L/ROUT [AUDA_OUTL/R] LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 96 NTP7514 LRCH2 [GPIO31] AMP_MUTE(Woofer_mute) AMP_MUTE (Woofer_mute) MICOM SIDE_HP_MUTE TU_SIF TPA6138A2 [AAD_ADC_SIF] HP_L/ROUT_MAI Headphone H/P Jack [AUDA_OUTL] [HDMI_ARC] [IEC958OUT] HP_L/ROU SPDIF_OUT SPDIF_OUT_ARC LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 97 DDC_I2C HDMI4(1.4b) MHL2.1 HPD4 / MHL_CBUS RXBSCL/SDA_U1 CEC_ (SIL9617) MHL_VBUS REMOTE HDMI_U14_2 RXASCL/SDA_U1 HDMI Out DDC_I2C 1 MICOM CEC_REMOT (R5F100GEAFB) (TPS2553) LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 98 USB_DP3 / DM3 GL852G-31 USB3 [UART1_RXD] M_REMOTE_RXD [UART1_TXD] M_REMOTE_TXD [UART1_RTS] M_REMOTE_RTS [UART1_CTS] M_REMOTE_CTS [UART0_RXD] [UART0_TXD] SOC_TX SOC_RX SOC_TX SOC_RX MICOM WIFI/BT RS-232C LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 99 33 Ω IC12000 [SCL5] [SCL2/GPIO78 SII9587CNUC LG1132-D13 [CSDA] I2C_SDA5 AF 33 I2C_SDA3 HDMI_SW 33 Ω [SDA5] AN19 33 Ω B11/B1 [SDA2/GPIO7 LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 100 I2C_SDA_MICOM LG1154D [P61/SDAA0] MICOM (IC3000) R5F100GEAFB HDMI_CEC HDMI Jack [P74/KR4/INTP8/SI01/SDA0 Audio Playback CAM_SLEEP Camera [P30/INTP3/RTC1HZ/SCK11/SCL11] WOL/ETH_POWER_ON LAN PHY [P50/INTP1/SI11/SDA11] 98UB98 only LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 101 [CAM_IREQ_N/GPIO73] CAM_INPACK_N G34 [CAM_RESET] 51P LVDS Connector [GPIO11] AG7 PCM_5V_CTL P7200 /FRC_FLASH_W [CAM_INPACK/GPIO74] CAM_WAIT_N [GPIO126] Y7 FI-RE51S-HFK-A CAM_REG_N [CAM_VCCEN_N/GPIO87] [CAM_WAIT_N/GPIO84] [CAM_REG_N/GPIO72] LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 102 POWER S/W CAM_DET P4200 IC3202 [P30/INTP3/RTC1HZ/SCK11/SCL11] TPS2554 INV_CTL USB Wi-FI 24P POWER [P13/TxD2/SO20] WOL/WOW_POWER_ON 13 [P50/INTP1/SI11/SDA11] P4301 P2301 RL_ON [P140/PCLBUZ0/INTP6] FW20020-24S LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 103 Main PCB T - CON LOGO + IR Jog Key BT MOTION ASSY WIFI ASSY BT MOTION ASSY WIFI ASSY LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. To Main Only for training and service purposes...
  • Page 104 Circuit noise, mechanical noise F. Exterior error Exterior defect LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. First of all, Check whether there is SVC Bulletin in GCSC System for these model. Only for training and service purposes...
  • Page 105 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 ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 106 Power No Video/ replace voltage? No audio Board ( 3.5V,12V,20V MAIN B/D or 24V…) Replace Power Board and repair parts LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 107 2. Install Booster S/W Upgrade Contact with signal distributor Normal Picture? or broadcaster (Cable or Air) Normal Picture? Replace Main B/D Close Close LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 108 Request repair for external device/cable Check external External device HDMI device and /Cable Replace Main/T-con B/D cable error normal LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 109 (Check normal operation of screen? Replace Screen External Input, Component, Main /T-con normal? RGB and HDMI/DVI by connecting Jig, pattern Generator ,Set-top Box etc. LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 110 Measure voltage of each output of Power B/D Normal? ※ Normal Replace Main B/D voltage? Close Normal Check ST-BY 3.5V voltage? ☞A18 Replace Power B/D Replace Power LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 111 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 ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 112 Speaker off Board Cancel OFF Replace Power Board and repair parts Check Disconnection Replace MAIN Board Speaker disconnection Replace Speaker LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 113 Connect and check Normal External Input other external audio? signal error) device Check and fix external device Check and fix external device LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 114 (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 ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 115 Down load the Firmware * If you conduct the loop at 3times, change the M4. * INSTART MENU14.RF Remocon Test3. Firmware download LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 116 Main B/D ☞A24 Close Check & Repair Wifi cable connection ☞A4 Wi-Fi Mac value is “NG”? Close Change the Wifi assy LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 117 P4200 12,13pin Main B/D ☞A25 Close Check & Repair Camera cable connection ☞A4 Camera Ver. is “NULL”? Close Change the Camera assy LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 118 - S/W Version 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 ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 119 ※ Describe the basis of the description (For models without any fix information, in “Part related to nose” in the Owner’s provide the description) Manual. LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 120 Zoom part with Module Replace module exterior damage damage Cabinet Replace cabinet damage Remote controller Replace remote controller damage Stand Replace stand dent LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 121 Defected Type caused by T-Con/ Exchange Power Board (PSU) A-3/5 Inverter/ Module Exchange Module (1) A-4/5 Exchange Module (2) A-5/5 Continue to the next page LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 122 Motion Remote operation checking D. Function error method Wifi operation checking method Camera operation checking method Not Used E. Etc Tool option changing method LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 123 After turning on the power and disassembling the case, check with the naked eye, whether you can see light from locations. LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 124 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. (Cool/Medium/Warm), re-enter the value after replacing the MAIN BOARD. LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 125 Quick Settings  Programmes Programme Tunning  Manual Tuning When the signal is strong, use the attenuator (-10dB, -15dB, -20dB etc.) LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 126 <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 ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 127 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 ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 128 LCD TV 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 ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 129 Check Link Cable (LVDS) reconnection condition date <ALL MODELS> Check the contact condition of the Link Cable, especially dust or mis insertion. LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 130 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 ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 131 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 ⓒ 2014 LG Electronics. Inc. All right reserved. A - 1/5 Only for training and service purposes...
  • Page 132 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 ⓒ 2014 LG Electronics. Inc. All right reserved. A - 2/5 Only for training and service purposes...
  • Page 133 Appendix : Exchange Power Board (PSU) No Light Dim Light Dim Light Dim Light No picture/Sound Ok LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. A - 3/5 Only for training and service purposes...
  • Page 134 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 ⓒ 2014 LG Electronics. Inc. All right reserved. A - 4/5 Only for training and service purposes...
  • Page 135 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 ⓒ 2014 LG Electronics. Inc. All right reserved. A - 5/5 Only for training and service purposes...
  • Page 136 LCD TV Revised Content Check front Power Indicator date <98UB98> ST-BY condition: On or Off Power ON condition: Turn Off LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 137 P_main Maker : Yeonho 24Pin SMAW200-H24S5 ’14년 적용 24Pin map (Power) PWR ON DVR_ON P_DIM #1 PDIM #2 3.5V 3.5V 3.5V LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 138 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 ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 139 1. Press the Setting button on the remote controller 2. Select the Sound function of the Menu 3. Select the Sound Out 4. Select TV Speaker LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 140 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 ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 141 4. 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 ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 142 Checking order 1, 2. Check Motion cable condition between Motion assy & Main board. Check the 3.3V on the terminal 2. LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 143 Checking order 1, 2. Check Wifi cable condition between Wifi assy & Main board. Check the 3.3V on the terminal 2. LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 144 Checking order 1, 2. Check Camera cable condition between Camera assy & Main board. Check the 3.5V on the terminal 2. LGE Internal Use Only Copyright ⓒ 2014 LG Electronics. Inc. All right reserved. Only for training and service purposes...

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