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LG 49UF7600 Service Manual
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LG 49UF7600 Service Manual

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Table of Contents

See also: Owner's Manual
LED TV

SERVICE MANUAL

CHASSIS : LA53J
MODEL : 49UF7600
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL68704428 (1503-REV00)
North/Latin America
Europe/Africa
Asia/Oceania
49UF7600-UJ
Internal Use Only
http://aic.lgservice.com
http://eic.lgservice.com
http://biz.lgservice.com
Printed in Korea

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  • Page 1: Service Manual

    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 : LA53J MODEL : 49UF7600 49UF7600-UJ CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL68704428 (1503-REV00) Printed in Korea...

  • Page 2: Table Of Contents

    ADJUSTMENT INSTRUCTION .............. 14 BLOCK DIAGRAM .................. 26 EXPLODED VIEW .................. 27 SCHEMATIC CIRCUIT DIAGRAM ..........APPENDIX TROUBLE SHOOTING GUIDE ..........APPENDIX - 2 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 3: Safety Precautions

    An other abnormality exists that must be corrected before the receiver is returned to the customer. - 3 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 4: Servicing Precautions

    - 4 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 5 1. Clip each fuse or resistor lead at top of the circuit board hollow stake. 2. Securely crimp the leads of replacement component around notch at stake top. - 5 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 6: 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: General Specification

    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 4096*2160 Only UD Model 4096*2160 56.25 Only UD Model 4096*2160 67.5 Only UD Model 4096*2160 67.5 Only UD Model - 8 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 9 61.43 29.97 296.703 UDTV 2160P 4096*2160 67.5 UDTV 2160P 4096*2160 59.94 UDTV 2160P(HDMI 1,2 only) 4096*2160 UDTV 2160P(HDMI 1,2only) - 9 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 10 29.976 / 30.00 148.35/148.5 Side-by-side(Full) (HDTV 1080P) 67.43 / 67.5 59.94 / 60 148.35/148.50 Top-and-Bottom Primary(HDTV 1080P) 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 Top & Bottom(half), Side by Side(half), Port3 Only Others 640*350 2D to 3D, 720*400 Side by Side(half), Top & Bottom 640*480 800*600 1152*864 - 11 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 12 3D input proposed mode 1080P 33.75 Side by Side(Half), Top & Bottom, Checker Board, MPO(Photo) 2160p 67.5 MPO(Photo), JPS(Photo) - 12 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 13 **Remark: 3D Input mode Side by Side Top & Bottom Checkerboard Single Frame Frame Packing Line Column Sequential Interleaving Interleaving LLLLL - 13 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 14: Adjustment Instruction

    ▪ xb 00 06 [Change input source to RGB(1024*768)] ▪ ad 00 10 [Adjust 1920*1080 RGB] ▪ aa 00 90 End adj. - 14 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 15 1) Play the LAN Port Test PROGRAM. 2) Input IP set up for an inspection to Test Program. *IP Number : 12.12.2.2. - 15 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 16 C. 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 - 16 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 17: Edid Block 0, Bytes

    Monthly : ‘01’ -> ‘01’ Year : ‘2015’ -> ‘19 ⓓ Model Name(Hex): LGTV ⓔ Checksum(LG TV): Changeable by total EDID data. ⓕ Vendor Specific(HDMI) 5.2.4.1. EDID # DTS HDMI1 (C/S: A0,E5)_6G_UHD Deep Color ON EDID Block 0, Bytes 0-127 2) Select [Start] button by pressing Enter key, HDMI1 / HDMI2 / HDMI3 / HDMI4 are Writing and display OK or NG.
  • Page 18 EDID Block 0, Bytes 0-127 EDID Block 0, Bytes 0-127 EDID Block 1, Bytes 128-255 EDID Block 1, Bytes 128-255 - 18 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 19 EDID Block 1, Bytes 128-255 EDID Block 1, Bytes 128-255 # PCM HDMI1 (C/S: F7 FD) EDID Block 0, Bytes 0-127 - 19 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 20: Edid Block 0, Bytes

    Push Camera Down EDID Block 1, Bytes 128-255 (3) RS-232C Command RS-232C COMMAND Explanation DATA Camera Function Start. Camera Function End. - 20 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 21: White Balance Adjustment

    - VAL : FOS Data value - CS : Checksum of sent data - A : Acknowledge Ex) [Send: JA_00_DD] / [Ack: A_00_okDDX] - 21 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 22: Adjustment Method

    - After Aging Start, Keep the Power ON status during 5 Minutes. - In case of LCD, Back-light on should be checked using no signal or Full-white pattern. - 22 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 23 Step 3) confirm the Local Dimming mode Step 4) Press “exit” Key 3) Don’t wear a 3D Glasses, Check the picture like below - 23 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 24 - If OK, Good lamp will lit up and the stopper will allow the pallet to move on to next process. Tuner GND is separated. - 24 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 25 (2) Select "Tool Option 1" and Push “OK” button. (3) Punch in the number. (Each model has their number.) - 25 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 26: Block Diagram

    BLOCK DIAGRAM - 26 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 27: Exploded View

    Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. - 27 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 28 2014-12-17 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR MAIN1_SYSTEM THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright ⓒ 2015 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. LM15U POWER 11/05/31 LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 30 2014-12-18 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. MAIN3_DDR LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 31 2014-11-20 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR MAIN4_EXT_IN/OUTPUT THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 32 2014-1-21 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LM15U_GND LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 33 2014-10-17 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR PCMCI THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 34 2014-00-01 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LM15U_PWR_1_UHD LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 35 2014-11-26 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR LM15U_PWR_2_ALL THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 36 2014-12-30 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 ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 37 2014-11-04 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR HDMI THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 38 2014-12-22 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. JACK_COMMON_H LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 39 2014-12-25 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. IR/KEY LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 40 2014-12-10 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. USB3_HUB LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 41 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. SCART JACK_H SCART_JACK_H Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 42 2014-12-15 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR LAN_H THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 43 FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR STM_AMP THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 44 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 ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 45 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR SCART AMP THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 46 FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR HP_AMP THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 47 JAPAN B-CAS ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 48 2014-12-30 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. TU_CIRCUIT LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 49 2014-09-11 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR TU_SYMBOL_H THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright ⓒ 2015 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 ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 51 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Vx1 51P LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 52 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR Vx1 41P THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 53 2014-11-17 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR eMMC THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 54 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 ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 55 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 ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 56 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. 4th layer 2013.12.17 URSA7_DDR LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 57 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 ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 58 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 ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 59 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 ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 60 ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR CLIP TYPE THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 61 FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR Tuner_GND THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 63 Overview for `15 ULTRA HD Model (Hardware) LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 64 HDMI 1 It is different form each HDMI port spec. HDMI2.0 We offer a HDMI cable for HDMI 1.4 legacy issue. HDMI1.4 LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 65 - You can operate the TV by pressing the button or moving surrounding environment. the joystick left, right, up, or down 2015 model : Luminance sensor LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 66 `14 ULTRA HD New Feature 3. Sub Assy (WiFi) WiFi 802.11n (BT Combo) UF77~UF94 16:9 14” Carry over LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 67 LCD TV Repair Guide `15 years New Models < Applicable Model > UF77/85 series LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 68 From PSU Image processor(URSA9) DDR Memory Sub Woofer wafer (only 79”) Phone jack (UART serial) Cover shield Audio B/T Wifi Local Key+IR LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 69 Video/Audio In Block Diagram Audio Out Block Diagram HDMI 10. USB / WIFI / M-REMOTE / UART 27, Jan, 2015 TV사업부 TV제품개발3팀 LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 70 0. System Overview (Main External) <14 year UHD model> <15 year UHD model> LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 71 IR / KEY LOGO LIGHT(Ready SCART CVBS/RGB (IN/OUT) Sub Micom SPDIF OUT OPTIC (RENESAS I2C 3 R5F100GEAFB) ETHERNET (HW Port) X_TAL 32.768KHz LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 72 IR / KEY CVBS/RGB LOGO LIGHT(Ready) (IN/OUT) SPDIF OUT OPTIC Sub Micom I2C 3 X_TAL (RENESAS ETHERNET 32.768KH (HW Port) R5F100GEAFB) LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 73 2. LM15U Block Diagram (Internal) LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 74 LCD Panel I2C_SCL6 1.8KΩ +3.3V_NORMAL I2C_SDA5(H TU6704 +URSA model Only 33Ω 1.8KΩ TUNER I2C_SCL5(HW) I2C_SDA7 (HW) IC2500 33Ω URSA9 I2C_SCL7 (HW) LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 75 - 1Gbit (x16) PANEL_VCC DDR3 SDRAM - 1866 DDR3 SDRAM - 1866 - 1Gbit (x16) - 1Gbit (x16) - 1866 - 1866 LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 76 DDR3*4EA DDR_VTT IC13403 H/P AMP NTP7515 LNB option WIFI CI SLOT PANEL VCC Combo NVRAM 5V NORMAL USB1 IC2305 USB2/3 NTP7514 LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 77 33Ω TS_OUT[0-7] AN2[SIFP] [TPI_DATA[0-7]] [TU_SIF_TU] 8 TU_CVBS FE_DEMOD1_TS_DATA [0-7] CI_MDI[0-7] AM14~AM15 AE5[CVBS0] [TU_CVBS_TU] 9 TS_IN[0-7] 33Ω [TPO_DATA[0-7]] IF_AGC AP3[IF_AGC] [IF_AGC_TU] 3 LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 78 SC_L/R_IN [LINE_IN_1L,LINE_IN_1R] DTV/MNT_V_OUT1 DTV/MNT_V_OUT [CVBSOUT1] DTV/MNT_L/R_OUT DTV/MNT_L/R_OUT [LINE_IN_0L,LINE_IN_0R] JK4600 TU_CVBS_TU TU_CVBS Tuner [CVBS0] TUNER_SIF, IF_P/N_TU TUNER_SIF, IF_P/N [SIFP,VIFP/VIFM] FE_DEMOD1/2_TS_ERROR,CLK,SYNC,VAL FE_DEMOD1/2_TS_ERROR,CLK,SYNC,VAL [TS0CLK,TS0SYNC,TS0VALID] LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 79 LM15U AMP_MUTE TUNER_SIF TR BUF [SIFP] IC3000 MICOM SIDE_HP_MUTE SPDIF_OUT HEAD PHONE [SPDIF_OUT] HP_LOUT / HP_ROUT [EARPHONE_OUT_L] [ EARPHONE_OUT_R] JK3401 JK3403 LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 80 TMDS Link 8bits MHL_DET_LM15 HDMI3 X-Tal(X3000) RENESAS Q3001 32.768kHz MICOM(IC3000) * TMDS Link 8bits = TMDS DATA 6bits(DATA0,1,2)+ TMDS CLK 2bits HDMI_CEC_MICO LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 81 IC4500 /USB_OCD3 [GPIO14] USB_CTL [GPIO18] WIFI_DM [USB1_DM] WIFI_DP WIFI Combo [USB1_DP] M_RFModule_RESET [GPIO57] SOC_TX [TX1] SOC_RX RS232C_Debug(4P wafer) [RX1] RENESAS MICOM(IC3000) LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 82 Main PCB T - CON IR Jog Key ASSY BT/Wifi Combo ASSY BT/Wifi Combo ASSY IR Jog Key ASSY To Main LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 83 Circuit noise, mechanical noise F. Exterior error Exterior defect First of all, Check whether there is SVC Bulletin in GCSC System for these model. LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 84 Always check & record S/W Version and White Replace Main Board Re-enter White Balance value Balance value before replacing the Main Board LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 85 Power No Video/ replace voltage? No audio Board ( 3.5V,12V, MAIN B/D 24V…) Replace Power Board and repair parts LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 86 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 ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 87 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 ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 88 (Check normal operation of Main /T-con normal? External Input, Component, RGB and HDMI/DVI by connecting Jig, pattern Generator ,Set-top Box etc. LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 89 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 ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 90 Power off by unknown status except listed case "POWEROFF_ABNORMAL1" Power off by abnormal status except CPU trouble Abnormal "POWEROFF_CPUABNORMAL" Power off by CPU Abnormal LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 91 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 ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 92 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 ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 93 (Power B/D don’t have problem) If R/C operate, Normal Explain the customer operating? cause is interference Close from light in room. Replace R/C LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 94 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 ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 95 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 ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 96 Check the Camera Ver. Reconnect the Normal Replace INSTART menu is “NULL”? operation? Camera module Main B/D Close Change the Camera module LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 97 - 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 ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 98 ※ 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 ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 99 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 ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 100 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 ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 101 Wifi operation checking method Camera operation checking method Not Used E. Etc Tool option changing method Continued from previous page LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 102 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 ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 103 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 ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 104 <ALL MODELS>  Advanced Channels Channel Tuning Manual Tuning When the signal is strong, use the attenuator (-10dB, - 15dB, -20dB etc.) LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 105 <ALL MODELS> 1. Checking method for remote controller for adjustment Version Press the IN-START with the remote controller for adjustment LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 106 2. After measuring each voltage from power supply, finally replace the MAIN BOARD. 3. If you can`t see the UHD live TV, please connect signal at left side of jack. (Korea model only) LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 107 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 ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 108 Check Link Cable(VX1) reconnection condition date <ALL MODELS> Check the contact condition of the Link Cable, especially dust or mis insertion. LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 109 Checking item : 1. Defective pixel 2. Residual image 3. MODULE error (ADD-BAR,SCAN BAR..) 4.Video error (Classification of MODULE or Main-B/D!) LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 110 Solder defect, CNT Broken Solder defect, CNT Broken T-Con Defect, CNT Broken Abnormal Power Section Solder defect, Short/Crack Solder defect, Short/Crack LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. A - 1/5 Only for training and service purposes...
  • Page 111 Abnormal Power Section Solder defect, Short/Crack Abnormal Display Fuse Open, Abnormal power section Solder defect, Short/Crack Noise GRADATION GRADATION LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. A - 2/5 Only for training and service purposes...
  • Page 112 Appendix : Exchange Power Board (PSU) No Light Dim Light Dim Light Dim Light No picture/Sound Ok LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. A - 3/5 Only for training and service purposes...
  • Page 113 Panel Mura, Light leakage Press damage Crosstalk Press damage Crosstalk Un-repairable Cases In this case please exchange the module. Press damage LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. A - 4/5 Only for training and service purposes...
  • Page 114 Un-repairable Cases In this case please exchange the module. Horizontal Block Gate TAB IC Defect Gate TAB IC Defect LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. A - 5/5 Only for training and service purposes...
  • Page 115 B. Power error _No power Error symptom date Revised Content Check power input voltage and ST-BY 3.5V date Check the DC 24V, 12V, 3.5V. LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 116 Entry method 1. Press the IN-START button of the remote controller for adjustment 2. Check the entry into adjustment item 3 LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 117 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 ⓒ 2015 LG Electronics. Inc. All right reserved. Only for training and service purposes...

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