Manuals / Brands / TV and Video / Flat Panel Television / LG Electronics / TV and Video / Flat Panel Television

LG Electronics 55LA965V/W/9-ZA B. Power error _No power, A18, Check the DC 24V, 12V, 3.5V. 18 Pin (Power Board Main Board)

1 125

Download 125 pages, 12.15 Mb

Established

date

Standard Repair Process Detail Technical Manual

Revised

date A18

Error

symptom

Content Check power input voltage and ST-BY 3.5V

B. Power error _No power

LCD TV

A18Check the DC 24V, 12V, 3.5V.18 Pin (Power Board ↔ Main Board)

1Power on 2INV ON

33.5V 4PDIM#1

53.5V 6PDIM#2

7GND 8GND

924V 10 24V

11 GND 12 GND

13 12V 14 12V

15 12V 16 24V

17 GND 18 GND

2013.01.31

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. External input format 5.1. 2D Mode 5.2. 3D Mode (4) HDMI 1.4b (3D supported mode automatically) Page Page ADJUSTMENT INSTRUCTION 1. Application Range 2. Designation 3. Automatic Adjustment 3.1. ADC Adjustment 3.3. LAN Inspection 3.4. LAN PORT INSPECTION(PING TEST) SET PC 3.5. Model name & Serial number Download 3.5.1. Model name & Serial number D/L 3.5.2. Method & notice 3.6. CI+ Key checking method 3.6.1. Check the method of CI+ Key value 4. Manual Adjustment 4.1. EDID(The Extended Display Identific ation 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. Adj. condition and cautionary items 4.2.3. Equipment 4.2.4. Equipment connection MAP 4.2.6. Adj. method 4.2.7. Reference (White balance Adj. coordinate and color temperature) 4.2.8. EDGE LED White balance table 4.3. Local Dimming Function Check 4.4. Magic Motion Remote control test 4.5. 3D function test 4.6. Wi-Fi Test 4.7. LNB voltage and 22KHz tone check 4.8. Inspection of light scattering 4.9. Option selection per country 4.9.1. Overview 5. Audio 6. USB S/W Download(Service only) * After downloading, have to adjust Tool Option again. EXPLODED VIEW FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS IC102 R1EX24256BSAS0A Jtag I/F For Main I2C PULL UP IC100 LG1154D_H13D NVRAM INSTANT_MODE0 System Configuration Clock for LG1154D LG1154A (2) AFE 3CH Power +2.5V +3.3V_Bypass Cap (1) LG1154A +1.1V_Bypass Cap +0.75V LG1154D BSD-NC4_H002-HD 2012-10-18 LG1154DLG1154A DIMMING NC Placed as close as possible to IC4300 AFE 3CH REF Setting FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS IC501 BSD-NC4_H005-HD 2012-09-14 (x16) FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS BSD-NC4_H007-HD 2012-10-20 PCMCIA FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS POWER IC2302 AP7173-SPG-13 HF(DIODES) 5A LG1154 IC2300 +5.0V normal & USB DCDC_TI Renesas MICOM FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS P3100 SMAW200-H16S2 GP4 5 DOOR MOTOR Sheet option : 55/65_Motor THERMAL [EP]GND HDMI3 From D13 FHD 55 GPIO2 HDMI2 GP4 54 CD_SENSE1 COMPONENT 1 PHONE JACK FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS JACK HIGH/MID 2012.10.09 SPDIF OUT BSD-NC4_H034-HD MAX 0.4A For 84" UD only FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS IC4200 GL852G-31 CAMERA POWER ENABLE CONTROL USB3_HUB 2012.10.08 USB_Camera OCP USB1 OCP USB2/3 USB2 (2.0) MAX 1.0A USB3 (2.0) MAX 1.0A USB1 (3.0) MAX 1.2A BSD-NC4_H044-HD 2012-11-09 USB JACK FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS Full Scart(18 Pin Gender) BSD-NC4_H048-HD 50 LAN_VERTICAL 2011.12.09 Ethernet Block FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS IC5200 RTL8201F-VB-CG WOL POWER ENABLE CONTROL ETHERNET Ethernet Block BSD-NC4_H052-HD 2012-09-12 SPEAKER_L IC5600 GP4_MT5369 2011.11.21 AUDIO[ST] This parts are Located WOOFER_R GP4_MT5369 2011.11.21 AUDIO[ST] This parts are Located WOOFER_L Height_SPK option FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS IC6000 AZ4580MTR-E1 [SCART AUDIO MUTE] SCART AUDIO AMP 2011.11.21 60 EARPHONE AMP 62 CI SLOT 2011.10.31 CI POWER ENABLE CONTROL IC6300 TDA8024TT +5V_NORMAL B-CAS (SMART CARD) INTERFACE FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS IF_P 13 20 32 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS TU6705 TDSN-G351D TU_SYMBOL 2012.09.14 TU6702 TDSQ-H651F(B) TU6703 TDSQ-G651D(B) RS-232C Control INTERFACE FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS IC6900 A8303SESTR-T LNB 2012.03.08 69 DVB-S2 LNB Part Allegro Max 1.3A (Option:LNB) 2A FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS LVDS BSD-NC4_H072-HD 2012-10-15 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS IC8100-*3 KLM2G1HE3F-B001 (Just Interal LDO Capacitor) eMMC I/F eMMC serial 100 ohm option FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS IC12001 MX25L3206EM2I-12G IC12000 LG1132-D13 Serial Flash Boot Test SPI FLASH(4MByte) IC_D13 H5TQ2G63DFR-PBC IC12100 IC12101 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS +1.1V_D13_VDD R1 R2 Vout=0.765*(1+R1/R2)= 1.113V +1.5V_D13_DDR [51P HS-LVDS input wafer] EAX65309301 2013.03.18 U_LVDS INPUT 2 22 [41P HS-LVDS input wafer] H13_41pin LVDS FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS Master Slave FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS PA168-ES 4 22 [51P Vx1 output wafer] [41P Vx1 output wafer] [F] FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS IC100 PA168-ES P_DDR_A 5 22 H5TQ1G63EFR-PBC FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS PA168-ES 6 22P_DDR_B H5TQ1G63EFR-PBC IC500 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS SCL_S_A SDA_S_A SCL_M1_A SDA_M1_A P_GPIO_AB 8 22 FLASH_WP_P1 R652 1K 2MByte 2MByte FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS SW701 JTP-1127WEM 1 2 43 P_RESET 10 22 SW703 JTP-1127WEM 1 2 43 Master A Master B Name Function Bootstrap0 0:From SPI Flash 1:From internal ROM Bootstrap1 GPIO STATUS Connection GPIO STATUS Connection Master: 0110 Slave: 1100 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS P_UART,JTAG 12 22 UART FOR DEBUG PA138A UART FOR DEBUG PA138B EAX65309301 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS C1023 Close to DPLLVDD1V PinClose to OSCVDD1V Pin PA168_POWER_A1 13 22 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS C1167 Close to DIFTXVDD25 pin 14 22 PA168_POWER_A2 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS C1209 Close to DPLLVDD1V Pin Close to OSCVDD1V Pin 15 22 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS C1312 Close to DIFTXVDD25 pin PA168_POWER_B2 16 22 DDR PHY VREF Close to DDR POWER PIN FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS SPI_CZ I2C_S Port I2C EEPROM Chip Config U_UART,GPIO 20 22 URSA Reset Debugging for URSA FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS LGE7410 U_Power 21 22 DDR3 POWER FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS Wafer Vout=0.8*(1+R1/R2)=1.209V 22 22DC-DC POWER MAX 3.5A TYP 6000mA Page Page Main PCB FRC PCB(ULTRA HD) LG1154AN LG1154D : Not applied for 55/65LA965V External I/O H13 Block diagram LG1154D LG1154 TDSQ- G651D CI Slot Tuner Block H13 (LG1154AN) Analogue Input H13 LG1154 Audio I/O Page Interconnection - 1 [PCBs] Interconnection sub PCB( XXLA965V 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 1/16 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 A18 A3 3 Color error A6 A7 A8 date Revised date 4/16 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 A8 B. Power error Off when on, off while viewing, power auto on/off A19 date Revised date 7/16 7 C. Audio error No audio/ Normal video A20 A21+A18 date Revised date 8/16 8 C. Audio error Wrecked audio/ discontinuation/noise date Revised date 9/16 9 A21+A18 D. Function error Remote control & Local switch checking 1. Remote control(R/C) operating error D. Function error MR13 operating checking 2. MR13(Magic Remocon) operating error 11 A23 D. Function error Wifi operating checking A24 3.Wifi operating error 12 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 TUNER checking part A. Video error_Video error, video lag/stop <ALL MODELS> A5 Page Page Page Appendix : Exchange Main Board (1) Appendix : Exchange Main Board (2) Page Page Appendix : Exchange the Module (2) Un-repairable Cases In this case please exchange the module. Page B. Power error _No power A18 Check the DC 24V, 12V, 3.5V. 18 Pin (Power Board Main Board) Page Checking method Page Page A23 D. Function error < XXLA965V-ZA > A29 D. Function error < XXLA965V-ZA >