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LG Electronics 47LA790V/W/9-ZA manual

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Table of contents for the manual

  • Page 1

    Printed in Korea P/NO : MFL67733201 (1302-REV00) CHASSIS : LD34D MODEL: 47LA790V/W/9 47LA790V/W/9-ZA CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. LED TV SER VICE MANUAL North/Latin America http://aic.lgservice.com Europe/Africa http://eic.lgservice.com Asia/Oceania http://biz.lgservice.com Internal Use Only[...]

  • Page 2

    - 2 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes CONTENTS CONTENTS .............................................................................................. 2 SAFETY PRECAUTIONS ........................................................................ 3 SERVICING PRECAUTIO[...]

  • Page 3

    - 3 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in the Schematic Diagram and Exploded View . It is essential that these special safety parts should [...]

  • Page 4

    - 4 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes SER VICING PRECAUTIONS CAUTION: Before servicing receivers covered by this service manual and its supplements and addenda, read and follow the SAFETY PRECAUTIONS on page 3 of this publication. NOTE : If unforeseen circumstances [...]

  • Page 5

    - 5 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes IC Remove/Replacement Some chassis circuit boards have slotted holes (oblong) through which the IC leads are inserted and then bent at against the cir- cuit foil. When holes are the slotted type, the following technique shoul[...]

  • Page 6

    - 6 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes SPECIFICA TION NOTE : Specifications and others are subject to change without notice for improvement . 1. Application range This specification is applied to the LED TV used LD34D chassis. 2. Requirement for T est Each part is te[...]

  • Page 7

    - 7 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes No. Item Specication Remarks 2 Broadcasting system 1) P AL-BG/DK/I/I’ 2) SECAM L/L ’, DK, BG, I 3) DVB-T/T2, C, S/S2 3 Program coverage 1 ) Digital TV - VHF , UHF - C-Band, Ku-Band 2) Analogue TV -VHF : E2 to E12 -UHF : E[...]

  • Page 8

    - 8 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes 5. External input format 5.1. 2D Mode (1) Component input(Y , CB/PB, CR/PR) (2) HDMI Input (PC/DTV) No. Resolution H-freq(kHz) V -freq(Hz) 1. 720×480 15.73 60.00 SDTV , DVD 480i 2. 720×480 15.63 59.94 SDTV , DVD 480i 3. 720×4[...]

  • Page 9

    - 9 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes 5.2 . 3D Mode (1) RF Input(3D supported mode manually) No. Resolution Proposed 3D input proposed mode 1 HD - DTV 1080I 720P 2D to 3D Side by Side(Half) T op & Bottom 2 SD - DTV 576P 576I 3 SD - A TV(CVBS/SCART) (3) HDMI 1.3 [...]

  • Page 10

    - 10 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes (4) HDMI 1.4b (3D supported mode automatically) No. Resolution H-freq(kHz) V -freq.(Hz) Pixel clock(MHz) VIC 3D input proposed mode Proposed 1 640*480 31.469 / 31.5 59.94/ 60 25.125/25.2 1 T op-and-Bottom Side-by-side(half) Sec[...]

  • Page 11

    - 1 1 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes No. Resolution H-freq(kHz) V -freq.(Hz) Pixel clock(MHz) 3D input proposed mode Proposed 1 1024*768 48.36 60 65 2D to 3D, Side by Side(half) T op & Bottom HDTV 768P 2 1360*768 47.71 60 85.5 2D to 3D, Side by Side(half) T o[...]

  • Page 12

    - 12 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes No. Resolution H-freq(kHz) V -freq.(Hz) Pixel clock(MHz) 3D input proposed mode 1 Under 704x480 2D to 3D 2 Over 704x480 interlaced 2D to 3D, Side by Side(Half), T op & Bottom 3 Over 704x480 progressive 50 / 60 2D to 3D, Sid[...]

  • Page 13

    - 13 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes ADJUSTMENT INSTRUCTION 1. Application Range This specification sheet is applied to all of the LED TV with LD34D chassis. 2. Designation (1) Because this is not a hot chassis, it is not necessary to use an isolation transformer [...]

  • Page 14

    - 14 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes 3.3. LAN Inspection 3.3.1. Equipment & Condition ▪ Each other connection to LAN Port of IP Hub and Jig 3.3.2. LAN inspection solution ▪ LAN Port connection with PCB ▪ Network setting at MENU Mode of TV ▪ Setting aut[...]

  • Page 15

    - 15 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes * Manual Download (Model Name and Serial Number) If the TV set is downloaded by OT A or service man, sometimes model name or serial number is initialized.(Not always) It is impossible to download by bar code scan, so It need Ma[...]

  • Page 16

    - 16 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes 4. Manual Adjustment * ADC adjustment is not needed because of OTP(Auto ADC adjustment) 4.1. ED I D ( T h e E x t e n de d D i s p l a y I d e nt i f i c a t i o n Data)/DDC(Display Data Channel) download 4.1.1. Overview It is [...]

  • Page 17

    - 17 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes # HDMI 3(C/S : E8 61) EDID Block 0, Bytes 0-127 [00H-7FH] EDID Block 1, Bytes 128-255 [80H-FFH] # HDMI 4(C/S : E8 51) EDID Block 0, Bytes 0-127 [00H-7FH] EDID Block 1, Bytes 128-255 [80H-FFH] 4.2. White Balance Adjustment 4.2.1[...]

  • Page 18

    - 18 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes ▪ Adj. Map 4.2.5. Adj. method (1) Auto adj. method 1) Set TV in adj. mode using POWER ON key . 2) Zero calibrate probe then place it on the center of the Display . 3) Connect Cable.(RS-232C to USB) 4) Select mode in adj. Prog[...]

  • Page 19

    - 19 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes ▪ Standard color coordinate and temperature using CA-210(CH 18) 4.2.7. EDGE LED White balance table (1) EDGE LED module change color coordinate because of aging time. (2) A pply un der th e color c oordi nate ta ble, f or com[...]

  • Page 20

    - 20 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes 4.6. Wi-Fi T est Step 1) T urn on TV Step 2) Select Network Connection option in Network Menu. Step 3) Select Start Connection button in Network Connection. Step 4) If the system finds any AP like blow PIC, it is working well. [...]

  • Page 21

    - 21 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes 4.1 1. T ool Option selection - Method: Press ADJ key on the Adj. R/C, then select T ool option. 4.12. Ship-out mode check(In-stop) ▪ After final inspection, press "IN-STOP" key of the Adjustment remote control and [...]

  • Page 22

    - 22 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes A22 A10 A T1 AG1 910 900 200 Assembly 310 400 410 540 530 120 560 570 580 501 300 500 301 510 121 L V1 * Set + Stand AG2 Dual Play (Option) L V2 EXPLODED VIEW Many electrical and mechanical parts in this chassis have special sa[...]

  • Page 23

    THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. 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. EB_ADDR[13] EMMC_DATA[5] EB_ADDR[0] EB_ADDR[14] EB_ADDR[8][...]

  • Page 24

    THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. 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. 11/05/31 L222 BLM18PG121SN1D +1.1V_VDD L225 BLM15BD121SN1 [...]

  • Page 25

    THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. 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. TPO_DATA[0] TPO_DATA[2] TPO_DATA[3] FE_DEMOD1_TS_DATA[1] T[...]

  • Page 26

    THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. 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. M1_DDR_A5 M0_DDR_DQ10 M0_DDR_CASN M1_DDR_DM1 M1_DDR_WEN C5[...]

  • Page 27

    THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. 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. CI_DATA[7] CI_DATA[1] CI_DATA[5] CI_DATA[3] CI_DATA[2] CI_[...]

  • Page 28

    THERMAL THERMAL THERMAL THERMAL THERMAL THERMAL THERMAL THERMAL THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. 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 SCHEM[...]

  • Page 29

    THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. 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. WOL/WIFI_POWER_ON POWER_ON/OFF1 R3005 10K MICOM_LCD/OLED R[...]

  • Page 30

    THERMAL THERMAL THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. 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. DDC_SDA_4 R3246 10K CK+_HDMI1 C3214 1uF D3[...]

  • Page 31

    Fiber Optic THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. 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. +3.3V_NORMAL COMP1/AV1/DVI_R_IN COMP1/AV1/DVI_[...]

  • Page 32

    THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. 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. +3.3V_NORMAL +3.5V_ST C4007 0.1uF VA4001 5.6V AMOTECH CO.,[...]

  • Page 33

    THERMAL THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. 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. R4208 22K CAMERA_NON_OLED R4207 3.3K CAMERA_NON_OL[...]

  • Page 34

    USB DOWN STREAM USB DOWN STREAM THERMAL THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. 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. USB_CTL1 /USB_OCD1[...]

  • Page 35

    THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. 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. VA4808 5.5V OPT C4801 1000pF 50V EU VA4804 5.5V EU SC_G VA[...]

  • Page 36

    THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. 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. VA5102 5.5V JK5100 XRJH-01A-4-DA7-180-LG(B) LAN_XML 1 P1[C[...]

  • Page 37

    THERMAL THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. 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. EPHY_TXD1 R5215 3.3K EPHY_TDN +3.3V_WOL C5208 0.1u[...]

  • Page 38

    THERMAL THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. 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. +24V_AMP I2C_SCL1 C5628 330pF 50V AUD_MASTER_CLK W[...]

  • Page 39

    THERMAL THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. 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. C5711 4700pF WOOFER C5732 0.1uF 50V WOOFER SPK_WOO[...]

  • Page 40

    THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. 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. SIGN600002 C6004 0.1uF 50V EU DTV/MNT_R_OUT C6008 1uF 25V [...]

  • Page 41

    THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. 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. R6100 10K HP_OUT C6101 1uF 10V HP_OUT C6100 1uF 10V HP_OUT[...]

  • Page 42

    THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. 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. +5V_CI_ON +5V_NORMAL R6217 100 CI C6210 1uF 25V CI R6218 1[...]

  • Page 43

    THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. 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. SIGN630028 P6300 10057542-1311FLF(B CAS Slot) JAPAN C1 VCC[...]

  • Page 44

    THERMAL THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. 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. FE_DEMOD1_TS_DATA[1] FE_DEMOD1_TS_DATA[0] FE_DEMOD[...]

  • Page 45

    THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. 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. FE_DEMOD1_TS_VAL FE_LNA_Ctrl1 FE_DEMOD1_TS_DATA[7] FE_DEMO[...]

  • Page 46

    THERMAL THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. 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. A_GND C6905 10uF 25V LNB R6900 2.2K 1W LNB A_GND L[...]

  • Page 47

    THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. 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. TXBCLKP/TX2P R7217 0 UD TXC3N TXB0N/TX5N TXC2P TXB3N/TX1N [...]

  • Page 48

    THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. 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. I2C_SDA2 I2C_SCL2 R7401 10K L/DIM_OUT L/DIM0_VS +3.3V_NORM[...]

  • Page 49

    THERMAL THERMAL THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. 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. H_VDD VGL R7705 47 1/16W GMA18 CLK5 TXA4P [...]

  • Page 50

    THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. 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. C7923 10uF 25V C7928 10uF 25V C7926 10uF 25V C7930 10uF 25[...]

  • Page 51

    THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. 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. EMMC_DATA[4] EMMC_DATA[1] EMMC_DATA[6] EMMC_DATA[5] EMMC_D[...]

  • Page 52

    [...]

  • Page 53

    1 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only 2013 LED/LCD TV Engineering guide < A pplicable Model : High -end Platform > XXLA 79*- Z*[...]

  • Page 54

    2 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only EPI In terface EPI(Embedd ed Point-Poin t Interface) Features • Point-Point topology (support 2 Pair o ption) • CDR (C lock Data Recovery ) • Bandwidth up to 1.85Gbps/pa ir at FHD 120Hz 10 bit application • Lock [...]

  • Page 55

    3 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only EPI In terface (mini-L VDS v s. EPI) Comparison HF mini-L VDS What to change EPI (Emb edded clock P- to -P Interface) -Difficult to upgrade band width limit -M ultiple number of wires needed for higher band width HF mini[...]

  • Page 56

    4 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only HF mini-L VDS EPI T opology Protocol Features @10bit, FHD120 • Multi Drop • Data rate: 660 Mbps • External clock • Point to Point • Data rate : 1.8 Gbps • Embedded clock, Control Merit • Simple structure ?[...]

  • Page 57

    5 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only NFC (Near field communi cation) Near field communic ation (NFC) is a set of standards for smartphones and similar devices to establish radio communication w ith each other by touching them together or bringing them into [...]

  • Page 58

    6 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only LINE OUT Headphone External Speaker 2CH stereo Line out is used w hen y ou w ant to send the TV audio signal to a n external dev ice. It w ork s like headphone. The signal out or line out remains at a constant level, reg[...]

  • Page 59

    7 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Main PCB for Broadband Main + TC ON all in one T o PSU 2 6 4 1 M ain process or, DDR M emory eMM C Memory 2 3 4 Micom for Key/IR/Logo sensing PMIC A udio A M P xxLA 790V - Zx Key +IR+L ogo Front Spk T o module 5 5 EPI Wa[...]

  • Page 60

    8 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only 16 DDR3 16 1. H13 Block Diagram (External) DAC_DA T A HSR_P/M AA D_DATA CVBS BB_TP_DATA AUD Tuner PC_AUDI O PC_Au dio_L /R AV1_A udio L/R AV1 COMP1 AV1_CVBS Comp1 Y,P b,Pr HDMI Switch HDMI2 HDMI3 H13 LG1154A N USB1(USB3.[...]

  • Page 61

    9 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only IC3201 SII9587CNUC HDMI_SW IC7700 TPS65178RSLR EPI AR15 [SCL0/GPIO66] AP15 [SDA0/GPIO65] I2C_SDA1 IC5600 TAS5733 AMP MAIN 24 [SCL] 23 [SDA] IC5700 TAS5733 AMP WOOFER 33 Ω 33 Ω IC3000 R5F100GEAF B RENESAS MICOM 3.3k Ω [...]

  • Page 62

    10 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only 1.0V Core 3A 1.8V_TU 5V Normal 5A 1.5V DDR 3A IR A ss ’ y MICOM Ethernet PHY Wi - Fi A ss’y Logo Light A ss’y H13-D (VDDC) DDR (VDDQ) DDR (VDD) 3.5V 12V 24V H13-A (VDDC10) H13-A (A VDD10) H13-A (XTA L) 1.2V Core 8[...]

  • Page 63

    11 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only LG1 154 TDSQ- G651D [RESET] 2 AG6[GPIO10] AH34 [SCL5] AH33 [SDA5] [SLC] 3 [SDA] 4 [+3.3V_TUNER] 5 [+.1.8V_TUNER] 7 [CVBS] 8 [ERROR] 16 [SYNC] 17 [VALID] 18 [MCLK] 19 AL37[TP_DVB_ERR] AL36 [TP_DVB_SOP] AL35 [TP_DVB_VAL] [...]

  • Page 64

    12 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only COMP1_PR_IN_SOC COMP1_Y_IN_SOC COMP1_PB_IN_SOC COMP1_Y_IN_SOC_SOY 5. V ideo & Audio IN H13 (LG1 154AN) [CVBS_IN3] AV1_CVBS_IN AV1 Phone JACK [AUAD_L /R_CH3_IN] COMP1_Y/Pb/Pr Component 1 Phone JACK AV1_CVBS_IN_SOC CO[...]

  • Page 65

    13 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only 6. AUDIO OUT SPDIF_OUT TAS5733 AZ4580MTR OP A MP Mute CTRL [TR] LPF COMP1/AV1/DVI_L_IN [IEC958OUT] Tuner [AAD_A DC_SIF] SCART_MUTE SCART AUDIO L/R OUT I2C_SCL1/SDA1 MICOM MICOM [AUD_SCART_ OUTL/OUTR] SC_L/R_IN SCART_Lou[...]

  • Page 66

    14 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only HDMI Switch (IC3201 / SII9587CNUC) HDMI1 HDMI_HPD_ 1 ~ 4 5V_HD MI_1 ~ 4 HDMI Ou t put 8bits I2C_SCL/SDA 5 2bits CEC_REMOTE MHL OCP (IC3202 / TPS2554) MHL_D ET SPDIF_OUT_ARC HDMI_INT HDMI_S/W_RESET HDMI_HPD_ 1 5V_HDMI_1 [...]

  • Page 67

    15 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only (EPI CH1 ± ) (EPI CH3 ± ) TX0P/N TX2P/N (EPI CH2 ± ) TX1P/N EPI 50P_LEFT (LVDS_51PIN Side) (EPI CH4 ± ) (EPI CH6 ± ) TX3P/N TX5P/N (EPI CH5 ± ) TX4P/N 32/31 GMA_4/5/7/12/14/15 GMA_1/3/4/5/7/9/10/12/14/15/16/18 28/[...]

  • Page 68

    16 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only PMIC TPS65178 Boost Converter Buck 1 converter(VCC) Buck 2 converter(Vcore) Buck 3 converter(HVdd) Buck 4 converter(VCC18) Positive Charge P ump Cont roller Negative Charge Pump Controller 6-Ch Gamma Buffer(DAC output) [...]

  • Page 69

    17 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only 10. USB / WIFI / M-REMOTE / UART LG1154D_H13D USB1(3.0) USB3_DP USB3_DM [USB3_DP0] [USB3_RX0M] [USB3_RX0P] [USB3_TX0M] [USB3_TX0P] [USB3_DM0] USB2 USB_DP2 USB_DM2 [HUB_PORT_OVER0] [HUB_VBUS_CTRL0] O CP O CP +5V_USB_1 +5[...]

  • Page 70

    18 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Interconnection - 1 1 Main PCB 2 Power Board 3 Local key A ssy 1 2 3 4 5 Main / LPB 24Pin + Local Dimming Cable Main / Module EPI Cable 50& 50Pin LED driv er / PSU IR 8Pin Cable WiFi 6Pin + RF 8Pin Cable SPK Cable [[...]

  • Page 71

    19 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only 8 7 Interconnection - 2 IR to Local Key 3Pin Cable IR to Logo A ssy 4Pin Cable [Cables] 7 8 [PCBs] 6 IR Assy 6 47LA 790V - ZA[...]

  • Page 72

    20 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Introductions of 13Y RF ass’y + Magic Remote control 1. Syste m 2. Remote Buttons 3. MR13 Block Diagram 4. Function List 5. Pairing/Un-pairing Method[...]

  • Page 73

    21 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only 1. System Remote RF Receiver TV UA RT or U SB RF  Pairing Information T ransmission (Sen d to TV after Paired) • Static Calibration Data (Bypass only) • Remote FW v er . (Save also in Receiver) • BD_ADDR (Save [...]

  • Page 74

    22 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only 2. Remote Button s (M4 vs. MR13P) BUTT ON RF Unpaired IR_CODE RF Paired RF_CODE IR continuous repeat ETC. Phsical Buttons POW ER 0x 08 NONE Y IR on ly BACK 0x28 0x8028 Y SMART 0x7C 0x807C Y ← 0x07 0x8007 Y → 0x06 0x[...]

  • Page 75

    23 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only 3. MR13P Block Diagram MPU-6150 (Gyr o+ACC) (Invensense) BCM20733M A2 (BROADCOM ) Bluetooth 3.0 Key Button ( 4 x 4 ) AA x 2 Battery DC -DC Boost TI TPS61097 SOT23-5 Power Management Antenna Partr on X-tal 24 MHz 2.8V LD[...]

  • Page 76

    24 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only 주요 Item IC Manufacturer Function Remocon V oice V oice Codec WM8950 Wolfson 16KHz Sampling of A ud io data MEMS Mic. SPU0414HR5H Know les Sensing V oice Motion Sensor Gy ro S ensor + A ccelerometer MPU- 6150 Invense[...]

  • Page 77

    25 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only 5. RF Pairi ng / Un-pairing Method Method Description RF Pairing  Method1 – If unpaired, just press "OK" button. – If paired, press "OK" button after unpairing.  Method 2 (Repairing) – Pr[...]

  • Page 78

    26 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only 1. Wi - Fi built in A ss’y feature 2. Wi - Fi built in A ss’y specification Introductions of 13Y WIFI buil t in ass’y[...]

  • Page 79

    27 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only WIFI Built in ass’y feature PIN USB i nterface 1 Vcc 2 DM 3 DP 4 GND 5 WOW 6 NC - Pin map BCM43236B Wafer 6pin 1.25mm 3.3V USB DP, DN GND USB DP, DN DCDC EUP3010 Cry stal 20MHz 3.3V 1.2V 3.3V 1.2V Sw itch DM3030 Anten[...]

  • Page 80

    28 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only WIFI Built in ass’y Specification[...]

  • Page 81

    29 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only 표지 W idevine & HDCP 2. 0 & NETFLX 2012. 12. 08 Contents 1. Widev ine? 2. HDCP 2.0 & NETFLIX? 3. DTCP? 4. Changed BOM LCD TV LCD TV R&D Lab / HW1 team[...]

  • Page 82

    30 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only 1. Widev ine? [Widev ine] Widev ine is the Solution(Library) offering A daptive Streaming and DRM. In BBTV , w hen special CP do service, this module is required key . Currently CP w hich is requested to w idevine, is t[...]

  • Page 83

    31 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only  HDCP  High-bandwidth Digital Content Protection  Protect high- v alue digital motion pictures, television programs and audio against unauthorized intercepti on and copying between a digital set top box or digi[...]

  • Page 84

    32 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only 3. DTCP? [DTCP] The Digital T ransmission Content Protection Specification defines a cryptog rphic protocol for protecting audio/ v ideo entertainment content from unauthorized copying, intercepting, and tampering as it[...]

  • Page 85

    33 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only 4. Changed BOM  Changed Item : Separate HD CP check box . - HDCP 2.0 Tx - HDCP 2.0 Rx - HDCP 1.4 Rx As -W as Current[...]

  • Page 86

    34 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Contents of LCD TV Standard Repair Process No. Error symptom (High category) Error symptom (Mid category) Page Remarks 1 A. Video err or No video/Normal audio 37 2 No video/No audio 38 3 Tuning fail, Picture broken/ Fre[...]

  • Page 87

    35 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Contents of LCD TV Standard Repair Process Detail T echnical Manual No. Error s ymp tom Conte nt Page Remar ks 1 A. Vi deo error_ No video/Normal audio Check LCD back li ght with n aked eye A1 2 LED driver B+ 24V measu [...]

  • Page 88

    36 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Contents of LCD TV Standard Repair Process Detail T echnical Manual N o. Error sympt om Conte nt Page Remark s 21 B. Power error_No power Check front display LED A17 22 Check power in put Voltage & ST -BY 3.5V A18 2[...]

  • Page 89

    37 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Normal audio Y N Move to No video/No audio No video Normal audio Check Back Light On w ith n aked eye On Y N Check Power Board 12v,3.5v etc. Normal voltage Y N Replace T-con Board or module And Adjust VCO M Repair Power[...]

  • Page 90

    38 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Normal voltage? Check v ariou s voltages of Pow er Board ( 3.5V,12V,20V or 24V…) No Video/ No audio Check and replace MAIN B/D Y Replace Pow er Board and repair parts N End Standard Repair Process A . Video error No v[...]

  • Page 91

    39 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only A . Picture Problem Picture broken/ Freezing Y N ☞ A6 N Check RF Signal level Normal Signal? Check RF Cable Connection 1. Reconnection 2. Install Booster Check S/W Version Use S ignal T est Check Signal status S/W Upg[...]

  • Page 92

    40 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only A . Picture Problem (DVB-S/S2) Tuning fail, Picture broken/ Freezing Y N ☞ A6 Check RF Signal level Normal Signal? Check S/W Version S/W Upgrade SVC Bulletin? Normal Picture? Y N Y Close Check RF signal cable (DVB sat[...]

  • Page 93

    41 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Color error? Y N Check and replace Link Cable (EPI) and contact conditio n Y N Replace M ain B/D Color error? Check error color input mode Check color by input -External Input -COMPO NENT -HDMI/DVI Y External device /Ca[...]

  • Page 94

    42 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Screen normal? N Y Check ex ternal device connecti on conditio n Y N Check and replace Link Cable Normal? Y N Screen normal? Repl ace M ain B/D (adjust VCOM ) Replace module Check color condition by input -External Inpu[...]

  • Page 95

    43 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only B. Po w er error No power Power LED On? Y N DC Power on by pressing Pow er Key On Remote control Y N Normal operation? Check Power On ‘”High” Check Pow er cord was inserted properly Check Logo LED Replace Power B/[...]

  • Page 96

    44 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only B. Power error Off when on, off while viewing, power auto on/off Error? N Y Check Power Off Mode Fix A/C cord & Outlet and check each 3 phase out Check A/C cord Check for all 3- phase power out Check outlet Replace [...]

  • Page 97

    45 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only No audio Screen normal Check user menu > Speaker off Off N Y Cancel OFF Check audio B+ 24V of Power Board Norma l voltage Y N Replace Pow er Board and repair parts Check Speaker disconn ection N Y Replace Speaker Rep[...]

  • Page 98

    46 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only → abnormal audio/discontinuation/noise is same after “Check input signal” compare d to No audio C. Au dio er ror Wrecked audio/ discontinuation/noise W recked audio/ Discontin uation/ Noise for all audio Check and[...]

  • Page 99

    47 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only D. Gen eral Fun ction Problem Remote control & Local sw itch checking Y N 1. Remote co ntrol(R/C) operatin g error Check R/C itself Operation Normal operating? Normal operating? Y Close Replace R/C If R/C operate, E[...]

  • Page 100

    48 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Check technical inform ation - Fix information - S/W Version N Y Technical information? Check input signal Signal input? Y N External Input and Component Recognitio n error Check and fix external device/cable RGB,HDM I/[...]

  • Page 101

    49 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Check locati on of noi se Identify noise ty pe Circuit noise Replace PS U(with LED driver) Replace LE D driver Mechanical noise Check locati on of noise OR ※ W hen the nose is severe, replace the module (For models wi[...]

  • Page 102

    50 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Replace module Zoom p art with exterior damage Module damage Cabinet damage Replace cabinet Replace remote controller Remote controller damage Stand dent Replace stand F . Exterior defect Exterior defect A djust VCOM Es[...]

  • Page 103

    51 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only G. Netw ork Error Exterior defect Established date Revised date LCD TV Error symptom Standard R epair Process 2012. 12 .06 Y N Check Network status Normal Signal? Check S/W Version S/W Upgrade SVC Bulletin? Normal Pictu[...]

  • Page 104

    52 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only G. CI+ Competibility Error Exterior defect Established date Revised date LCD TV Error symptom Standard Repair Process 2012. 12 .06 Y N Check CI CA M statu s Read Information? Check CA M S/W Version CA M S/W Up grade By [...]

  • Page 105

    53 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Established date Standard Repair Process Detail T echnical Manual Revised date A1 Error symptom Content Ch eck LCD back light with naked ey e A . Video error_No v ideo/Normal audio A fter turning on the pow er and disas[...]

  • Page 106

    54 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Entry me thod 1. Press the ADJ button on the remote controller for adjustme nt. 2. Enter into Wh ite Balance of item 6. 3. Af ter recording the R, G, B (GAIN, Cut) value of Color T emp (C ool/Medium /W arm), re - enter [...]

  • Page 107

    55 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Standard Repair Process Detail T echnical Manual Power Board voltage measuring method A . Video error_No v ideo/ Au dio A5 Established date Revised date Error symptom Content LCD TV Check the DC 24V , 12V , 3.5V . 24 Pi[...]

  • Page 108

    56 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only MENU  support  signal test  select channel W hen the signal is strong, use the attenuator (-10dB, -15dB, -20dB etc.) Standard Repair Process Detail T echnical Manual TUNER input signal strength checking method [...]

  • Page 109

    57 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Standard Repair Process Detail T echnical Manual LCD-TV Version checking method A . Video error_Video error , video lag/s top 1. Checking method for remote controller for adjustment Press the IN-ST ART with the remote c[...]

  • Page 110

    58 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Standard Repair Process Detail T echnical Manual LCD TV connection diagram (1) A . Video error _V ertic al/Horizontal bar , residual image, light spot A s the part c onnecting to the e xternal input, check the screen co[...]

  • Page 111

    59 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Checking method: 1. Check the signal strength or check w hether the screen is normal w hen the external dev ice is connected. 2. Aft er measuring each voltage from pow er supply, finally replace the MAIN BOARD. Standard[...]

  • Page 112

    60 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Standard Repair Process Detail T echnical Manual A djustment T est pattern - ADJ Key A . Video error_Color error Y ou can view 6 ty pes o f patterns using the ADJ Ke y Checking item : 1. Defective pixel 2. Residual imag[...]

  • Page 113

    61 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Solder def ect, CNT Broken T -Con Defect, CNT Broken T -Con Defect, CNT Broken T -Con Defect, CNT Broken Solder def ect, CNT Broken Solder def ect, CNT Broken Solder def ect, CNT Broken Solder def ect, CNT Broken Abnorm[...]

  • Page 114

    62 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Abnormal Power Section Solder def ect, Short/Crack Abnormal Power Section Solder def ect, Short/Crack Fuse Open, Abnorm al power section Noise GRADA TION GRADA TION Abnormal Display A ppendix : Exchange EPI Cable or Mai[...]

  • Page 115

    63 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only A ppendix : Exchange LPB(LED driv er) No Lig ht Dim Lig ht Dim Lig ht Dim Lig ht[...]

  • Page 116

    64 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only A ppendix : Exchange the Modul e (1) Panel Mura, Light leakage Press damage Crosstalk Crosstalk Press damage Panel Mura, Light leakage Press damage Un -repairable Case s In this ca se please exchange the module.[...]

  • Page 117

    65 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only V ertical Block Source T AB IC Defect Horizontal Block Gate T AB IC Defect Gate T AB IC Defect Gate T AB IC Defect V ertical Line Source T AB IC Defect V ertical Block Source T AB IC Defect Horizontal Block Gate T AB IC[...]

  • Page 118

    66 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Standard Repair Process Detail T echnical Manual Check front display LED B. Po w er error _No pow er A 17 Established date Revised date Error symptom Content LCD TV Front LOGO LED control in the status of ST -BY Conditi[...]

  • Page 119

    67 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only 24 Pin (Power Board ↔ Main Board) SMAW200 - H24S 1 Power on 2 In verter On/o ff 3 3.5V 4 PWM Dim #1 5 3.5V 6 PWM Dim #2 7 GND 8 GND 9 24V 10 24V 11 GND 12 GND 13 12V 14 12V 15 12V 16 24V 17 GND 18 GND 19 GND 20 GND 21[...]

  • Page 120

    68 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Standard Repair Process Detail T echnical Manual Checking method when power is ON B. Po w er error _No pow er A 19 Established date Revised date Error symptom Content LCD TV Check “power on” pin is high 2012. 12 .06[...]

  • Page 121

    69 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Entry method 1. Press the IN-ST AR T button of the remote controller for adjustment 2. Check the entry into adjustment item 3 Standard Repair Process Detail T echnical Manual POWER OFF MODE checking method B. Power erro[...]

  • Page 122

    70 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Checking method 1. Press the M ENU butto n on the remote controller 2. Select the SOUND f unction of the Menu 3. Change TV Sound Out to TV Speaker Standard Repair Process Detail T echnical Manual Checking method in menu[...]

  • Page 123

    71 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only 24 Pin (Powe r Boar d ↔ Main Bo ard) SMAW200 - H24S 1 Power on 2 I nverter On /off 3 3.5V 4 PWM Dim #1 5 3.5V 6 PWM Dim #2 7 GND 8 GND 9 24V 10 24V 11 GND 12 GND 13 12V 14 12V 15 12V 16 24V 17 GND 18 GND 19 GND 20 GND[...]

  • Page 124

    72 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Checking order 1, 2. Check IR cable condition betw een IR & Main board. 3. Check the st-by 3.5V on the terminal 4. 4. W hen checking the Pre-Amp when the pow er is in ON condition, it is normal when the Analog T est[...]

  • Page 125

    73 / 90 Copyrigh t © 2013 LG Elect ronics. Inc. All rights reserved. Only for training and service purposes LGE Internal Use Only Standard Repair Process Detail T echnical Manual Sequence of the Vcom adjustment D. VC OM A djustment 1. Case ■ LCD module change ■ T -Con board change 2. Equipment ■ Service Remo te controller 3. A djust sequence[...]