Check Power LED, Check ST-BY | LG Electronics 32LA62**-Z* specs

Standard Repair Process

	Error	B. Power error	Established	2012. 12 .06
LCD TV	Error	B. Power error	date	2012. 12 .06
LCD TV	symptom	No power	Revised date
		No power	Revised date

☞A17

☞A19

Check

Power LED

. Stand-By: Red

. Operating: white

Power LED Y

On?

DC Power on

by pressing Power Key On Remote control

Normal N operation?

Check Power

On ‘”High”

OK?

Replace

Power

B/D

Check Power cord was inserted properly

☞A4

Replace Main B/D

Normal?

Measure voltage of each output of Power B/D

※

READ THE SAFETY PRECAUTIONS IN THIS MANUAL MODEL 32LA62** 32LA62**-ZSERVICE MANUAL LED TV SAFETY PRECAUTIONS CONTENTSCONTENTS SERVICING PRECAUTIONS SAFETY PRECAUTIONS IMPORTANT SAFETY NOTICE SERVICING PRECAUTIONS Electrostatically Sensitive ES Devices Small-Signal Discrete Transistor Removal/Replacement IC Remove/ReplacementReplacement Removal 1. Application range SPECIFICATION4. Model General Specification 3. Test method DVB-S2 8PSK / QPSK 2 ~ 45Msymbol/s Symbolrate 4.0Msymbols/s to 7.2Msymbols/ssymbolrate DVB-S QPSK 2 ~ 45Msymbol/s 5. Component Video Input Y, Pb, Pr 6. HDMI Input 6.1. DTV mode 6.2. PC mode 7.1. HDMI 1.4b 3D supported mode automatically 7.4. RF Input 3D supported mode automatically 7.2. HDMI Input1.37.3. RF Input3D supported mode manually 7.5. USB Input 3D supported mode manually 7.8. Component Input3D 3D supported mode manually 7.6. HDMI-PC Input 3D supported mode manually7.7. DLNA Input 3D supported mode manually 7.9. 3D Input mode 1. Application Range ADJUSTMENT INSTRUCTION3. Automatic Adjustment 2. Designation 3.4. Model name & Serial number Download 3.3. LAN PORT INSPECTIONPING TESTSET PC 3.5. CI+ Key checking method 4.1. EDID DATA 4. Manual Adjustment3.6. WIFI MAC ADDRESS CHECK 4.1.2. 2D EDID 4.2. White Balance Adjustment4.2.4. Adj. Command Protocol 4.2.1. Overview 4.2.7. ALELF & EDGE LED White balance table 4.2.5. Adj. method4.2.6. Reference White balance Adj. coordinate and color temperature 4.3. Local Dimming Function Check 4.4. Magic Motion Remote control test4.6. Wi-Fi Test 4.5. 3D function test 6. Ship-out mode checkIn-stop 7. GND and Internal Pressure check5. Tool Option selection 8. Audio 9. USB S/W DownloadService only After downloading, have to adjust Tool Option again LGE2122 DIAGRAMBLOCK reserved EXPLODED VIEW X-TAL EAX64797001* LD33B EAX64872101* LA33BNVRAM Model Option LGE2122A2M13 PLACE AT JACK SIDEIC105 IC105 LGE2122A2M13 ZD500 PLACE AT IC6000 PLACE AT JACK SIDEPLACE AT MAIN SOC SIDE K4B4G1646B-HCK0 DDR512MBSSIC701 IC703 K4B4G1646B-HCK0 LGE Internal Use Only FROM LPB & PSU PANELPOWERPowerDET +5VNormal MICOM MODEL OPTION Renesas MICOMFor Debug GP4 High/MID Power SEQUENCE SIDE HDMI3 JACK HIGH / MID SPDIFSPDIF OUT 2011.11.21 JACKCOMMON AV/COMPONENT REAR UART FOR DEBUG AR4100 MAX 0.4AMREMOTE&WIFIWAFER 1/16W USB3 MAX 1.5A OCP USB2/3USB2 MAX 1.5A IC4306 MAX 1.5A USB1OCP USB1 IC4500 SCART GENDER Full Scart18 Pin GenderJK4600 2011.10.26 2012.03.08 Ethernet BlockLANVERTICAL 0x54 AMPMUTEPWRDET AZ4580MTR-E1 SCART AUDIO MUTEIC6000 2011.09.29 EARPHONE AMP 18pFHEADPHONE AMP 2011.10.31 CI POWER ENABLE CONTROLCI SLOT TDA8024TT B-CAS SMART CARD INTERFACE+3.3VNORMAL +5VNORMAL Vout=0.6*1+R1/R2 TU6602 TU6600TU6601 TDSS-G501DB JP6801 RS-232C Control INTERFACEJP6800 Input trace widths should be sized to conduct at least 3A DVB-S2 LNB Part AllegroOptionLNB Ouput trace widths should be sized to conduct at least 2A 41Pin LVDS OUTPUT Connector LVDS51Pin LVDS OUTPUT Connector LVDSHIGHMID R7601 10K L/DIMOUT8P L/DIM0SCLKPWR L/DIM0MOSIPWR R7603 LOCAL DIMMINGP7600 12507WR-08L L/DIMOUT8P I2CSCL1 L/DIMOUT8P R7602 LEVEL SHIFTER BLOCK POWER BLOCKTHIS IS REVERSE PATTERN T-Con Copyright 2013 LG Electronics. Inc. All rights reserved Just Interal LDO Capacitor Don’t Connect Power At VDDIeMMC I/F EMMC +24VAMP OPT C5450 10uF 35V DEMODTSCLK ExtTSCLK DEMODTSSYNC ExtTSSync DEMODTSDATA0 ExtTsD0 JAPAN TUNER INTERFACEUSE Two serial TS Port for Japan MTK A2 Ball Name Function DEMODTSVAL ExtTsVAL DEMODTSDATA1 EXT2TsCLK DEMODTSDATA3 EXT2TSSyncPage 2013 LED/LCD TV Engineering guide Applicable Model Mid-end Platform XXLA74*-Z XXLA71*-Z XXLA69/66*-ZXXLA64/62/61*-Z XXLN57*-Z Instruction of new sub ass’ys 6. Adjust way of new features CONTENT1. New features 2. Main PCBs 3. Block Diagrams, IIC Map 4. Structure of TV set and connection of sub ass’ys 5. New sub ass’ys Merits EPIEmbedded Point-Point Interface FeaturesEPI Interface EPI TCON EPI Interface mini-LVDS vs. EPIHF mini-LVDS TCON Comparison Topology FeaturesHF mini-LVDS Protocol NFC Tag NFC Near field communicationUser Action Area From TV to Smart phone xxLA660S-Zx Main PCB for BroadbandWIFI/BT Chassis LD33B 1. LGE2122 Block Diagram IC105 LGE 2. LGE 2122 I2C Block Diagram 3. Power Block Diagram 3.5V CI Slot TDSQ G501D SoC Side 5. Video/Audio In Block DiagramJack Side 6. Audio Out Block Diagram Tuner HDMI3 HDMI1HDMI2 RENESAS WOLCTL MICOM TPS65178 PMICLevel Shift TPS65198 9. PMIC & Level Shift Bloc Diagram RENESAS MICOM Motion Remote Receiver4Pin debugging wafer USBDM1 USBDP1 /USBOCD1 USBCTL1 Cables InterconnectionPCBs 47LA660S-ZA 6 IR Assy 7 IR to Local Key 3Pin Cable 8 IR to Logo Assy 4Pin Cable 5. Pairing/Un-pairing Method Introductions of 13Y RF ass’y + Magic Remote control1. System 2. Remote Buttons 3. MR13 Block Diagram 4. Function List Pairing Information Transmission Sequence 1. System Pairing Information Transmission Send to TV after Paired  Motion Data Transmission MR13 Remote 2. Remote Buttons M4 vs. MR13M4 Remote repeat Bluetooth Remote control 3. MR13 Block DiagramPower Management Bluetooth Receiver Battery Boost up Regulator 4. Function listWireless communication RF, Gyro, Accelerometer Power Supply Description 5. RF Pairing / Un-pairing MethodMethod Introductions of 13Y WIFI built in ass’y 1. Wi-Fi built in Ass’y feature 2. Wi-Fi built in Ass’y specification Switch WIFI Built in ass’y featurePin map Wafer WIFI Built in ass’y Specification Contents Widevine & HDCP 2.0 & NETFLX1. Widevine? 2. HDCP 2.0 & NETFLIX? 3. DTCP? 4. Changed BOM 2012. 12 1. Widevine?  Why HDCP2.0? 2. HDCP 2.0 & NETFLIX? Netflix  HDCP 3. DTCP? Current 4. Changed BOMAs-Was Changed Item Contents of LCD TV Standard Repair Process Content Contents of LCD TV Standard Repair Process Detail Technical ManualError symptom Page Check Power Board 12v,3.5v etc Main B/D↔ Power B/D, LVDS Cable,Speaker Cable,IR B/D CableCheck Power Board 24v output Replace T-con Board or module And Adjust VCOM Check various voltages of Power Board 3.5V,12V,20V or 24V… Signal strength Normal over 50% Signal Quality Normal over 50% By using Digital signal level meter By using Diagnostics menu on OSDMenu→ Set up→ Support → Signal Test Check RF Signal level A. Picture Problem DVB-S/S2 → Set-Top-Box, Different maker TV etc ※ Check and A10/ A11Check color by input -External Input COMPONENT replace Link Replace Main B/D adjust VCOM External device screen error-Color errorVertical/Horizontal bar, residual image, light spot A10/ A11 Measure voltage of each output of Power B/D Check Power LEDCheck Power On ‘”High” Check ST-BY POWEROFFABNORMAL1 Check Power Off ModeIf Power Off mode is not displayed Check Power B/D voltage POWEROFFCPUABNORMAL Check audio B+ 24V of Power Board Check user menu Speaker off In case of External Input signal error Check and fix external device Check audio B+ Voltage Check 3.5v on Power B/D Replace Power B/D or Replace Main B/D Check & Repair Cable connection Connector solderCheck IR Output signal Power B/D don’t have problem D. Function error External device recognition error Identify noise type Adjust VCOM F. Exterior defect G. Network Error Check defect CI slot pin  Check SVC Bulletin Continued from previous page Entry method Standard Repair Process Detail Technical ManualALL MODELS SMAW200-H24S 24 Pin Power Board ↔ Main BoardCheck the DC 24V, 12V When the signal is strong, use the attenuator -10dB, -15dB, -20dB etc A. Video errorVideo error, video lag/stopMENU  support  signal test  select channel Version 1. Checking method for remote controller for adjustmentPress the IN-START with the remote controller for adjustment ALL MODELS A. Video error Vertical/Horizontal bar, residual image, light spot Checking method MODULE error ADD-BAR,SCAN BAR A. Video errorColor errorYou can view 6 types of patterns using the ADJ Key 4.Video error Classification of MODULE or Main-B/D Solder defect, CNT Broken Appendix Exchange EPI Cable or Main B/DAbnormal Power Section Solder defect, Short/Crack GRADATION Fuse Open, Abnormal power sectionAbnormal Display Noise Dim Light Appendix Exchange LPBLED driverNo Light Panel Mura, Light leakage Crosstalk Press damage Appendix Exchange the ModuleUn-repairable Cases In this case please exchange the module Panel Mura, Light leakage Appendix Exchange the Module Front LOGO LED control in the status of ST-BY Condition When st-by, only 3.5V is normally on For ’10 models, there is no voltage out for st-by purpose Check “power on” pin is high Checking method when power is ON B. Power error Off when on, off whiling viewing 1. Press the IN-START button of the remote controller for adjustment2. Check the entry into adjustment item Entry method 2. Select the SOUND function of the Menu C. Audio errorNo audio/Normal video1. Press the MENU button on the remote controller 3. Change TV Sound Out to TV Speaker Checking order when there is no audio ③ ④ ② ① LCD module change T-Con board change

Copyright © 2013 LG Electronics. Inc. All rights reserved.	25 / 88	LGE Internal Use Only
Only for training and service purposes	25 / 88

LG Electronics 32LA62**-Z* service manual Check Power LED, Check Power On ‘”High”, Check ST-BY

Models: 32LA62**-Z*

Check

Check Power

Measure voltage of each output of Power B/D

Check ST-BY 3.5V