LG Electronics 84LM960V/W-ZB - page 160

Checking order when there is no audio

①Check the contact condition of or 24V connector of Main Board

②Measure the 24V input voltage supplied from Power Board

(If there is no input voltage, remove and check the connector)

③Connect 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.

Standard Repair Process Detail Technical Manual

Voltage and speaker checking method

when there is no audio

C. Audio error_No audio/Normal video

<ALL MODELS>

A25-1

Established

date

Revised

date

Error

symptom

Content

LCD TV

A25

①

②

③

②

2011. 12 .14

ALEF LED 24 Pin (Power Board ↔ Main Board)

1Power on 224V

324V 424V

5GND 6GND

7GND 8GND

93.5V 10 3.5V

11 3.5V 12 3.5V

13 GND 14 GND

15 GND 16 V-sync

17 12V 18 Inverter On/off

19 12V 20 N.C

21 12V 22 PWM Dim #1

23 PWM Dim #2 24 Error-out

Edge LED

Copyright © 2012 LG Electronics. Inc. All rights reserved.

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(3D supported mode manually) 8.3. HDMI Input 8.3.1. HDMI 1.3 (3D supported mode manually) 8.2. RF Input(3D supported mode automatically) 8.3.2. HDMI 1.4b (3D supported mode automatically) 8.4. HDMI-PC Input (3D) (3D supported mode manually) 8.5. RGB-PC Input (3D) (3D supported mode manually) 8.6. Component Input(3D) (3D supported mode manually) 2D to 3D Row Interleaving, Column Interleaving (Photo : side by Side(half), Top & Bottom) MPO(photo) 8.7. USB Input(3D) (3D supported mode manually) 8.9. DLNA Input (3D) (3D supported mode manually) 8.8. USB Input(3D) (3D supported mode automatically) 2D to 3D Row Interleaving, Column Interleaving (Photo : side by Side(half), Top & Bottom) 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 Adj. 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 LG1152_NON_RM LG1152_RM Debug IC100-*1 MAIN & GPIO 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 2011.12.09 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 [To LED DRIVER] LOCAL DIMMING 2012.02.22 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS IC8100-*1 H26M21001ECR 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 Page Page Page EPI Interface (mini-LVDS vs. EPI) Comparison HF mini-LVDS What to change EPI (Embedded clock P-to-P Interface) EPI Interface (mini-LVDS vs. EPI) EdgeType w/LocalDimming Types of LED - Edge IOLDirectLED w/LocalDimming Types of LED - IOL ALEFType LocalDimming Feature Types of LED - ALEF Model XXLM960V 47inch : H(6) * V(4) = 24Block 55inch : H(6) * V(4) = 24Block 47/55LM960V-ZB Page XXLM860V-ZB Page Page Page Page FRC Board Block Diagram LG1152D-B2 LG1152A-B2 Block Diagram (84LM960V-ZB) LG1152D-B2 FPGA LG1152A-B2 LG1122 FPGA Block Diagram for Jack Interface Earphone Block Main Chip Tuner SPDIF PC_Audio Block Diagram for Backlight [ 47/55LM960V ALEF LED Backlight] [ XXLM860V Edge LED Backlight] Block Diagram for Backlight SoC 3D Main [ 84LM960V Edge LED Backlight] SPI/Vsync Appendix. Block Diagram for IOL LED Backlight [ XXLM950V IOL LED Backlight] Interconnection - ALEF 47/55LM960V-ZB Interconnection sub PCB( XXLM960V Series ) Interconnection - Edge [PCBs]XXLM860V-ZB LPB Interconnection sub PCB( XXLM860V Series ) Interconnection IOL Interconnection sub PCB( XXLM950V Series ) Interconnection Egde Interconnection sub PCB(84LM960V-ZB ) Page 2012Y IR + Soft touch PCB Pinmap & Applied Model List 2012Y IR + Soft Touch LED Lighting Scenario Power LED Scenario Page Introductions of GP4 Sensor (Touch IC) Touch EEPROM Register change with USB port Add Value Page 1. System 2. Remote Buttons (M3 vs. M4) power home ok vol ch 3. M4 Block Diagram 4. Function list 5. RF Pairing / Un-pairing Method Method Description Introductions of 12Y WIFI built in assy WIFI Built in assy feature(LGIT) WIFI built in feature Page Page 12Y Widevine & HDCP 2.0 & NETFLX 1. Widevine? 2. HDCP 2.0 & NETFLIX? 3. DTCP? 4. Changed BOM Page 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 1/13 No video/ Normal audio First of all, Check whether all of cables between board is inserted properly or not. (Main B/D Power B/D, LVDS Cable,Speaker Cable,IR B/D Cable,,,) 1 A4 A. Picture Problem A6 A7 3 Color error A8 A10/ A11 A12 date Revised date 4/13 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 7/13 C. Audio error No audio/ Normal video A24 A25 date Revised date 8/13 8 C. Audio error Wrecked audio/ discontinuation/noise date Revised date 9/13 A25 9 D. General Function Problem Remote control & Local switch checking A4 1. Remote control(R/C) operating error 10 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 Page Page Page Page Main PSU < 84LM96 > Main PSU Page Page SLAVE PSU(72LM95) 24 Pin (Power Board Main Board) Common SLAVE PSU(84LM96) 24 Pin (Power Board Main Board) Common Page Page Page TUNER checking part A. Video error_Video error, video lag/stop <ALL MODELS> A9 Page 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 A18 ALEF LED Edge LED A18 SLAVE PSU 24 Pin (Power Board Main Board) SLAVE PSU 24 Pin (Power Board Main Board) - Common <84LM96> Page SLAVE PSU 24 Pin (Power Board Main Board) <84LM96> Page Checking method