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

LG Electronics 32LA62**-Z* Standard Repair Process Detail Technical Manual, Residual image

Models: 32LA62**-Z*

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Page 115

Standard Repair Process Detail Technical Manual

	Error	A. Video error_Color error	Established	2012. 12 .06
LCD TV	symptom	A. Video error_Color error	date	2012. 12 .06
	symptom		date
	Content	Adjustment Test pattern - ADJ Key	Revised		A12
			Revised
			date
			date

You can view 6 types of patterns using the ADJ Key

Checking item : 1. Defective pixel	2. Residual image	3.	MODULE error (ADD-BAR,SCAN BAR..)
4.Video error (Classification of MODULE or Main-B/D!)

Copyright © 2013 LG Electronics. Inc. All rights reserved.	42	/ 88	LGE Internal Use Only
Only for training and service purposes	42	/ 88

Page 115

Image 115

LG Electronics 32LA62**-Z* Standard Repair Process Detail Technical Manual, A. Video errorColor error, Residual image

Contents

LED TV MODEL 32LA62** 32LA62**-ZSERVICE MANUAL READ THE SAFETY PRECAUTIONS IN THIS MANUALSERVICING PRECAUTIONS CONTENTSCONTENTS SAFETY PRECAUTIONSIMPORTANT SAFETY NOTICE SAFETY PRECAUTIONSElectrostatically Sensitive ES Devices SERVICING PRECAUTIONSRemoval IC Remove/ReplacementReplacement Small-Signal Discrete Transistor Removal/Replacement3. Test method SPECIFICATION4. Model General Specification 1. Application rangeDVB-S2 8PSK / QPSK 2 ~ 45Msymbol/s SpecificationSymbolrate 4.0Msymbols/s to 7.2Msymbols/s symbolrate5. Component Video Input Y, Pb, Pr 6.2. PC mode 6. HDMI Input 6.1. DTV modeLG Electronics. Inc. All rights reserved 7.1. HDMI 1.4b 3D supported mode automaticallyOnly for training and service purposes Copyright7.2. HDMI Input1.3 7.3. RF Input3D supported mode manually7.4. RF Input 3D supported mode automatically 7.5. USB Input 3D supported mode manually7.9. 3D Input mode 7.6. HDMI-PC Input 3D supported mode manually7.7. DLNA Input 3D supported mode manually 7.8. Component Input3D 3D supported mode manually2. Designation ADJUSTMENT INSTRUCTION3. Automatic Adjustment 1. Application Range3.5. CI+ Key checking method 3.3. LAN PORT INSPECTIONPING TESTSET PC 3.4. Model name & Serial number Download3.6. WIFI MAC ADDRESS CHECK 4. Manual Adjustment4.1. EDID DATA 4.2.1. Overview 4.2. White Balance Adjustment4.2.4. Adj. Command Protocol 4.1.2. 2D EDID4.2.5. Adj. method 4.2.6. Reference White balance Adj. coordinate and color temperature4.2.7. ALELF & EDGE LED White balance table 4.5. 3D function test 4.4. Magic Motion Remote control test4.6. Wi-Fi Test 4.3. Local Dimming Function Check8. Audio 6. Ship-out mode checkIn-stop7. GND and Internal Pressure check 5. Tool Option selectionAfter downloading, have to adjust Tool Option again 9. USB S/W DownloadService onlyreserved DIAGRAMBLOCK LGE2122EXPLODED VIEW Model Option EAX64797001* LD33B EAX64872101* LA33BNVRAM X-TALLGE Internal Use Only Only for training and service purposesPLACE AT JACK SIDE Copyright 2013 LG Electronics. Inc. All rights reservedZD500 Only for training and service purposesCopyright 2013 LG Electronics. Inc. All rights reserved LGE Internal Use OnlyOnly for training and service purposes PLACE AT JACK SIDEPLACE AT MAIN SOC SIDE PLACE AT IC6000DDR512MBSS Only for training and service purposesCopyright 2013 LG Electronics. Inc. All rights reserved LGE Internal Use OnlyCopyright 2013 LG Electronics. Inc. All rights reserved Only for training and service purposesLGE Internal Use Only +5VNormal PANELPOWERPowerDET FROM LPB & PSUGP4 High/MID Power SEQUENCE Renesas MICOMFor Debug MICOM MODEL OPTIONSIDE Only for training and service purposesSIDE HDMI3Copyright 2013 LG Electronics. Inc. All rights reserved Only for training and service purposesSPDIF SPDIF OUTJACKCOMMON Only for training and service purposesCopyright 2013 LG Electronics. Inc. All rights reserved LGE Internal Use OnlyCopyright 2013 LG Electronics. Inc. All rights reserved Only for training and service purposesAV/COMPONENT REAR UART FOR DEBUGAR4100 MAX 0.4AOnly for training and service purposes MREMOTE&WIFIWAFEROnly for training and service purposes OCP USB2/3USB2 MAX 1.5A USB3 MAX 1.5AIC4500 USB1OCP USB1 MAX 1.5ALGE Internal Use Only Only for training and service purposesFull Scart18 Pin Gender Copyright 2013 LG Electronics. Inc. All rights reservedLGE Internal Use Only Only for training and service purposesEthernet Block Copyright 2013 LG Electronics. Inc. All rights reservedCopyright 2013 LG Electronics. Inc. All rights reserved Only for training and service purposes0x54 AMPMUTEPWRDETLGE Internal Use Only Only for training and service purposesSCART AUDIO MUTE Copyright 2013 LG Electronics. Inc. All rights reserved2011.09.29 EARPHONE AMP 18pFOnly for training and service purposes HEADPHONE AMPLGE Internal Use Only Only for training and service purposesCI POWER ENABLE CONTROL Copyright 2013 LG Electronics. Inc. All rights reservedLGE Internal Use Only B-CAS SMART CARD INTERFACEOnly for training and service purposes Copyright 2013 LG Electronics. Inc. All rights reservedLGE Internal Use Only Only for training and service purposesVout=0.6*1+R1/R2 Copyright 2013 LG Electronics. Inc. All rights reservedTU6602 Only for training and service purposesTU6600 TU6601JP6800 RS-232C Control INTERFACEJP6801 Input trace widths should be sized to conduct at least 3A DVB-S2 LNB Part AllegroOptionLNB Only for training and service purposes41Pin LVDS OUTPUT Connector LVDSOnly for training and service purposes 51Pin LVDS OUTPUT ConnectorLGE Internal Use Only LOCAL DIMMINGOnly for training and service purposes Copyright 2013 LG Electronics. Inc. All rights reservedOnly for training and service purposes POWER BLOCKTHIS IS REVERSE PATTERN LEVEL SHIFTER BLOCKLGE Internal Use Only Only for training and service purposesT-Con Copyright 2013 LG Electronics. Inc. All rights reservedJust Interal LDO Capacitor Don’t Connect Power At VDDIeMMC I/F Only for training and service purposes+24VAMP OPT C5450 10uF 35V Only for training and service purposesCopyright 2013 LG Electronics. Inc. All rights reserved LGE Internal Use OnlyDEMODTSCLK ExtTSCLK DEMODTSSYNC ExtTSSync DEMODTSDATA0 ExtTsD0 JAPAN TUNER INTERFACEOnly for training and service purposes USE Two serial TS Port for Japan MTK A2 Ball Name FunctionPage 2013 LED/LCD TV Engineering guide Applicable Model Mid-end Platform XXLA74*-Z XXLA71*-Z XXLA69/66*-ZXXLA64/62/61*-Z XXLN57*-Z Only for training and service purposes4. Structure of TV set and connection of sub ass’ys 5. New sub ass’ys CONTENT1. New features 2. Main PCBs 3. Block Diagrams, IIC Map Instruction of new sub ass’ys 6. Adjust way of new featuresEPI Interface EPIEmbedded Point-Point Interface FeaturesMerits Comparison EPI Interface mini-LVDS vs. EPIHF mini-LVDS TCON EPI TCONTopology FeaturesEPI Interface mini-LVDS vs. EPI HF mini-LVDSFrom TV to Smart phone NFC Near field communicationUser Action Area NFC TagxxLA660S-Zx Main PCB for BroadbandWIFI/BT Only for training and service purposes1. LGE2122 Block Diagram 2. LGE 2122 I2C Block Diagram IC105 LGE3.5V 3. Power Block DiagramCopyright 2013 LG Electronics. Inc. All rights reserved Only for training and service purposesCI Slot TDSQ G501DSoC Side 5. Video/Audio In Block DiagramOnly for training and service purposes Jack SideLGE Internal Use Only 6. Audio Out Block DiagramOnly for training and service purposes Copyright 2013 LG Electronics. Inc. All rights reservedHDMI3 Only for training and service purposesHDMI1 HDMI2TPS65178 Only for training and service purposesPMIC Level ShiftTPS65178 9. PMIC & Level Shift Bloc DiagramPMIC Level ShiftRENESAS MICOM Only for training and service purposesMotion Remote Receiver 4Pin debugging wafer47LA660S-ZA InterconnectionPCBs CablesCables Only for training and service purposesInterconnection PCBsOnly for training and service purposes Introductions of 13Y RF ass’y + Magic Remote control1. System 2. Remote Buttons 3. MR13 Block Diagram 4. Function List 5. Pairing/Un-pairing Method Motion Data Transmission 1. System Pairing Information Transmission Send to TV after Paired Pairing Information Transmission Sequencerepeat 2. Remote Buttons M4 vs. MR13M4 Remote MR13 RemoteBluetooth Receiver 3. MR13 Block DiagramPower Management Bluetooth Remote controlRF, Gyro, Accelerometer Power Supply 4. Function listWireless communication Battery Boost up RegulatorMethod 5. RF Pairing / Un-pairing MethodDescription Copyright 2013 LG Electronics. Inc. All rights reserved Introductions of 13Y WIFI built in ass’y1. Wi-Fi built in Ass’y feature 2. Wi-Fi built in Ass’y specification Only for training and service purposesSwitch WIFI Built in ass’y featurePin map SwitchLGE Internal Use Only WIFI Built in ass’y SpecificationOnly for training and service purposes Copyright 2013 LG Electronics. Inc. All rights reservedOnly for training and service purposes Widevine & HDCP 2.0 & NETFLX1. Widevine? 2. HDCP 2.0 & NETFLIX? 3. DTCP? 4. Changed BOM Contents1. Widevine?  HDCP 2. HDCP 2.0 & NETFLIX? Netflix  Why HDCP2.0?3. DTCP? Changed Item 4. Changed BOMAs-Was CurrentContents of LCD TV Standard Repair Process Page Contents of LCD TV Standard Repair Process Detail Technical ManualError symptom ContentReplace T-con Board or module And Adjust VCOM Main B/D↔ Power B/D, LVDS Cable,Speaker Cable,IR B/D CableCheck Power Board 24v output Check Power Board 12v,3.5v etcCopyright 2013 LG Electronics. Inc. All rights reserved Check various voltages of Power BoardOnly for training and service purposes 3.5V,12V,20V or 24V…Check RF Signal level By using Digital signal level meter By using Diagnostics menu on OSDMenu→ Set up→ Support → Signal Test Signal strength Normal over 50% Signal Quality Normal over 50%→ Set-Top-Box, Different maker TV etc A. Picture Problem DVB-S/S2Check RF Signal level LCD TVreplace Link A10/ A11Check color by input -External Input COMPONENT ※ Check andA10/ A11 External device screen error-Color errorVertical/Horizontal bar, residual image, light spot Replace Main B/D adjust VCOMCheck ST-BY Check Power LEDCheck Power On ‘”High” Measure voltage of each output of Power B/DPOWEROFFCPUABNORMAL Check Power Off ModeIf Power Off mode is not displayed Check Power B/D voltage POWEROFFABNORMAL1Check user menu Speaker off Check audio B+ 24V of Power BoardCheck audio B+ Voltage In case of External Input signal error Check and fix external devicePower B/D don’t have problem Check & Repair Cable connection Connector solderCheck IR Output signal Check 3.5v on Power B/D Replace Power B/D or Replace Main B/DExternal device recognition error D. Function errorError symptomIdentify noise type F. Exterior defect Adjust VCOMLCD TV LCD TV G. Network ErrorCheck S/W Version  Check SVC Bulletin Check defect CI slot pinContinued from previous page Contents of LCD TV Standard Repair Process Detail Technical ManualError symptom ContentALL MODELS Standard Repair Process Detail Technical ManualEntry method SMAW200-H24S 24 Pin Power Board ↔ Main BoardStandard Repair Process Detail Technical Manual Check the DC 24V, 12VOnly for training and service purposes A. Video errorVideo error, video lag/stopMENU  support  signal test  select channel When the signal is strong, use the attenuator -10dB, -15dB, -20dB etcOnly for training and service purposes A. Video errorVideo error, video lag/stop1. Checking method for remote controller for adjustment Press the IN-START with the remote controller for adjustmentimage, light spot A. Video error Vertical/Horizontal bar, residualOnly for training and service purposes Standard Repair Process Detail Technical ManualChecking method A. Video errorVideo error, video lag/stopStandard Repair Process Detail Technical Manual ALL MODELS4.Video error Classification of MODULE or Main-B/D A. Video errorColor errorYou can view 6 types of patterns using the ADJ Key MODULE error ADD-BAR,SCAN BAROnly for training and service purposes Appendix Exchange EPI Cable or Main B/DAbnormal Power Section Abnormal Power SectionOnly for training and service purposes Abnormal Power SectionAbnormal Power Section Fuse Open, Abnormal power sectionDim Light Appendix Exchange LPBLED driverOnly for training and service purposes No LightPanel Mura, Light leakage Appendix Exchange the ModuleUn-repairable Cases In this case please exchange the module Panel Mura, Light leakage Crosstalk Press damageUn-repairable Cases In this case please exchange the module Appendix Exchange the ModuleFront LOGO LED control in the status of ST-BY Condition Standard Repair Process Detail Technical ManualFor ’10 models, there is no voltage out for st-by purpose When st-by, only 3.5V is normally on24 Pin Power Board ↔ Main Board Standard Repair Process Detail Technical ManualStandard Repair Process Detail Technical Manual Check “power on” pin is high24 Pin Power Board ↔ Main Board Checking method when power is ONOnly for training and service purposes 1. Press the IN-START button of the remote controller for adjustment2. Check the entry into adjustment item B. Power error Off when on, off whiling viewingStandard Repair Process Detail Technical Manual C. Audio errorNo audio/Normal video1. Press the MENU button on the remote controller Only for training and service purposesStandard Repair Process Detail Technical Manual C. Audio errorNo audio/Normal video24 Pin Power Board ↔ Main Board Checking order when there is no audio③ ④ ② ① Standard Repair Process Detail Technical ManualALL MODELS LCD module change T-Con board change Standard Repair Process Detail Technical Manual

A. Video error_Color error

You can view 6 types of patterns using the ADJ Key

Checking item : 1. Defective pixel

2. Residual image

MODULE error (ADD-BAR,SCAN BAR..)

4.Video error (Classification of MODULE or Main-B/D!)