LG Electronics 55LM860V/W-ZB, W-ZB C. Audio error

No audio

Screen normal

Check user

menu >

Speaker off Off N

Cancel OFF

Check audio B+

24V of Power

Board

Normal

voltage

Replace Power Board and repair parts

Check

Speaker

disconnection

Replace Speaker

Replace MAIN Board End

C. Audio error

No audio/ Normal video

☞A24 ☞A25

Disconnection

Established

date

Revised date 8/15

LCD TV Error

symptom

Standard Repair Process

8

2012.01.16

Only for training and service purposes

LGE Internal Use Only

Contents

Main CONTENTS SAFETY PRECAUTIONS IMPORTANT SAFETY NOTICE General Guidance Before returning the receiver to the customer, Leakage Current Cold Check(Antenna Cold Check) SERVICING PRECAUTIONS Page SPECIFICATION 1. Application range 2. Requirement for Test 3. Test method 4. Model General Specification Page 5. Component Video Input (Y, Cb/Pb, Cr/Pr) 6. RGB input (PC) 7. HDMI Input 8. 3D Mode 8.1. RF Input 8.2. HDMI Input 8.2.1. HDMI 1.3 8.2.2. HDMI 1.4b Remark: 3D Input mode 1 1920*1080 67.5 60 148.5 Side by Side, Top & Bottom HDTV 1080P No. Side by Side Top & Bottom Checker board Single Frame Sequential Frame Packing Line Interleaving 8.3. RGB-PC Input(3D) 8.4. Component Input(3D) 1 1920*1080 33.75 30.000 74.25 Side by Side, Top & Bottom, Checkerboard HDTV 1080P 8.5. USB Input(3D) 1 1920*1080 33.75 30.000 74.25 Side by Side, Top & Bottom, Checkerboard HDTV 1080P ADJUSTMENT INSTRUCTION 1. Application Range 2. Designation 3. Automatic Adjustment 3.1. ADC Adjustment 3.3. LAN Inspection 3.3.1. Equipment & Condition SET PC 3.3.2. LAN inspection solution 3.3.3. WIDEVINE key Inspection 3.6. CI+ Key checking method 3.6.1. Check the method of CI+ Key value 3.6.2. Check the method of CI+ key value(RS232) 3.7. WIFI MAC ADDRESS CHECK 4. Manual Adjustment 4.1 EDID(The Extended Display Identification Data)/DDC(Display Data Channel) download 4.1.1. Overview 4.1.2. Equipment 4.1.3. Download method 4.2. White Balance Adjustment 4.2.1. Overview 4.2.2. Equipment 4.2.3. Equipment connection MAP 4.2.4. Adj. Command (Protocol) 4.2.5. Adj. method 4.2.6. Reference(White balance adjusmtment coordinate and color temperature) 4.2.7. ALELF & EDGE LED White balance table 4.3. EYE-Q function check 4.4. Local Dimming Function Check 4.5. Magic Motion Remote control test 4.6. 3D function test 4.7. Wi-Fi Test 4.8. LNB voltage and 22KHz tone check 4.9. Inspection of light scattering 4.10. Option selection per country 4.10.1. Overview 5. Tool Option selection 6. Ship-out mode check(In-stop) 7. GND and Internal Pressure check 7.1. Method 7.2. Checkpoint EXPLODED VIEW FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS IC102 R1EX24256BSAS0A JTAG I/F FOR MAIN LG1152 B1 IC100 LG1152D-B1 MAIN & GPIO System Configuration Debug BOOT_MODE1 LG1152A LG1152 MAIN POWER 3 LG1152AN-B2 LG1152D LG1152A LG1152D Main clock for LG1152A LG1152 B0 MAIN AUDIO/VIDEO 3 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS H5TQ1G63DFR-PBC LG1152 B0 IC702 IC700 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS IC904 74LVC245A CI AR918 75 AR916 75 CI +1.0V_VDD R2 +3.3V_NORMAL DDR MAIN 1.5V Vout=0.765*(1+R1/R2) Renesas MICOM MICOM MODEL OPTION 10 GP4 High/MID Power SEQUENCE Eye Sensor Option FHD FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS GP4 IC3200 AZ1117BH-1.2TRE1 HDMI3 RGB/ PC AUDIO/ SPDIF SPDIF OUT 36 Page RS232C CVBS 1 PHONE JACK COMPONENT 1 PHONE JACK JACK_COMMON 2011.11.21 38 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS IR & KEY IR / KEY 2011.11.21 41 RGB Sensor Zener Diode is USB HUB FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS IC4305 TPS54331D 3A USB3_HUB_WiFi 2011.10.26 43 USB_DCDC_SN1104041 L4306 BLM18PG121SN1D Full Scart(18 Pin Gender) AR4800 100 1/16W M_REMOTE MOTION REMOTE 2011.11.21 48 ZigBee_Radio Pulse M_REMOTE OPTION ALL M_REMOTE OPTION Ethernet Block LAN_VERTICAL 2011.11.23 50 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS IC5200 RTL8201F-VB-CG Ethernet Block FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS IC5400 NTP-7500L 0x54 IC5500 NTP-7500L WOOFER AMP. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS IC6000 AZ4580MTR-E1 60 [SCART AUDIO MUTE] EU Option FOR MTK Option FOR LG1152 2011.06.29 HEADPHONE AMP 61 EARPHONE AMP Low Pass Filter Place Near jack Side FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS TU6500 TDSS-G151D T/C/S & H/NIM & T2/C TUNER(EU & CHINA) DVB-S2 LNB Part Allegro FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS 69 (Option:LNB) LNB 2011.11.21 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS LG1152 A0 Interface block 72 100 [51Pin LVDS Connector] (For FHD FRC3 HS_LVDS) LOCAL DIMMING 76 [To LED DRIVER] LOCAL DIMMING 2011.11.21 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS eMMC I/F Dont Connect Power At VDDI Place Near Micom FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS IC9301 W25X40BVSSIG +1.0V Power Separation +2.5V LVDS_TX Decaps +3.3V_IO Decaps FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS H5TQ1G63DFR-PBC LG1132 DDR3 2011. 06 .28 LG1132 DDR3 IC9400 +2.5V Max 600 mA 3A L9 CORE for 1.0V (UD Model only / LG1132 DDR=792Mh) MOTOR_OPEN_SW GP4 MOTOR CONTROL MOTOR_CLOSE_SW MOTOR DRIVER IR BLASTER IC101 MX25L3206EM2I-12G XTAL(24.75MHz) SPI_FLASH +3.3V Power Separation 240Hz Back-End Board 2011. 07. 05 I2C For PQ tunning For JTAG Interface FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS H5TQ1G63DFR-PBC DDR1 PHY VREFDDR0 PHY VREF LG1122_DDR3 2 6 IC200 FRC-III I/O for 3.3V FRC-III AIP for 1.8V MAX 0.345A FRC-III CORE for 0.9V FRC-III DDR3 for 1.5V IC401 LGE5812B [T-Con EEPROM(32KBIT)] I2C Slave Address : 0x70 [T-Con EEPROM Debug] +3.3AVDD_VX1 Decaps PANEL_POWER FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS [LEFT FFC CONNECTOR][RIGHT FFC CONNECTOR] Wafer 6 6 [80P mini-LVDS output wafer] [51P HS-LVDS input wafer] SW103 SW107 SW104 SW100 SW105 Page LCD TV Repair Guide Benefit:MoreClearMoreReal EdgeType w/LocalDimming 2 types of LED - Edge Benefit:MoreClearMoreReal Feature ALEFType LocalDimming 2 types of LED - ALEF Model XXLM960V 47inch : H(6) * V(4) = 24Block 55inch : H(6) * V(4) = 24Block Main PCB for Broadband XXLM960V-ZB XXLM860V-ZB FRC Board for Broadband XXLM960V-ZB Block Diagram L9A L9D Jack Interface Main Chip Tuner SPDIF PC_Audio Earphone Block RGB SCART L9 Block diagram CPU CPU peripherial TE USB controller About 220 internally generated clocks Appendix. Block Diagram for Edge/ALEF Backlight FRC-III 80Pin mini LVDS 51Pin LVDS IC201 DDR1 Interconnection - 1 [PCBs]XXLM960V-ZB Interconnection sub PCB( XXLM960V Series ) Contents of LCD TV Standard Repair Process First of all, Check whether there is SVC Bulletin in GCSC System for these model. date Revised date 1/15 symptom A. Video error No video/ Normal audio First of all, Check whether all of cables between board is inserted properly or not. (Main B/DPower B/D, LVDS Cable,Speaker Cable,IR B/D Cable,,,) 1 A4 A6 3 Color error A9 A10 A12 date Revised date 4/15 4 Vertical/Horizontal bar, residual image, light spot Vertical / Horizontal bar, residual image, light spot, external device color error For other panel For LGD panel A12 B. Power error Off when on, off while viewing, power auto on/off A19 A22 date Revised date 7/15 C. Audio error A24 A25 8 abnormal audio/discontinuation/noise is same after Check input signal compared to No audio C. Audio error Wrecked audio/ discontinuation/noise date Revised date 9/15 A25 9 D. Function error 1. Remote control(R/C) operating error A4 10 D. Function error 2. M4(Magic Remocon) operating error 11 A28 D. Function error 3.Wifi operating error A29 12 A29 D. Function error E. Noise F. Exterior defect Contents of LCD TV Standard Repair Process Detail Technical Manual Continue to the next page Contents of LCD TV Standard Repair Process Detail Technical Manual Continued from previous page Page A. Video error_No video/Normal audio A2 Check the DC 24V and Inverter on ALEF LED Page A. Video error_No video/ Audio Page Page A. Video error_Video error, video lag/stop <ALL MODELS> A8 Page Page Page Appendix : Exchange T-Con Board (1) Appendix : Exchange T-Con Board (2) Page Page Appendix : Exchange the Module (2) Un-repairable Cases In this case please exchange the module. Page Page B. Power error _No power Page Checking method