LG Electronics MFL67360901, 47LM761S/761T-ZA, 47LM765S/765T-ZD service manual Identify nose type

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Identify nose type

Standard Repair Process

		Error	E. Noise	Established	2010. 12 .14
	LCD TV	Error	E. Noise	date	2010. 12 .14
	LCD TV	symptom	Circuit noise, mechanical noise	Revised date		12/13
			Circuit noise, mechanical noise	Revised date		12/13

Identify nose type

Circuit noise

Mechanical noise

Check location of noise

Check location of noise

Replace PSU(with LED driver)

OR

Replace LED driver

※Mechanical noise is a natural phenomenon, and apply the 1st level description. When the customer does not agree, apply the process by stage.

※Describe the basis of the description in “Part related to nose” in the Owner’s Manual.

OR

※When the nose is severe, replace the module (For models with fix information, upgrade the S/W or provide the description)

※If there is a “Tak Tak” noise from the cabinet, refer to the KMS fix information and then proceed as shown in the solution manual

(For models without any fix information, provide the description)

Copyright © 2012 LG Electronics. Inc. All rights reserved.	LGE Internal Use Only
Only for training and service purposes

Image 96

Contents MODEL 47LM760S/760T 47LM760S/760T-ZB SERVICE MANUALLED LCD TV 47LM761S/761T 47LM761S/761T-ZA 47LM765S/765T 47LM765S/765T-ZDCONTENTS Only for training and service purposesCopyright LG Electronics. Inc. All rights reservedSAFETY PRECAUTIONS IMPORTANT SAFETY NOTICEBefore returning the receiver to the customer Leakage Current Cold CheckAntenna Cold CheckSERVICING PRECAUTIONS Electrostatically Sensitive ES DevicesIC Remove/Replacement ReplacementSmall-Signal Discrete Transistor Removal/Replacement RemovalSPECIFICATION 4. Model General Specification1. Application range 2. Requirement for TestSymbolrate 4.0Msymbols/s to 7.2Msymbols/ssymbolrate DVB-S2 8PSK / QPSK 2 ~ 45Msymbol/s5. Component Video Input Y, Cb/Pb, Cr/Pr 6. RGB input PC7. HDMI Input 7.1. DTV mode 7.2. PC modeADJUSTMENT INSTRUCTION 3. Automatic Adjustment1. Application Range 2. Designation3.2. MAC address D/L, CI+ key D/L, Widevine key D/L, ESN D/L 3.4. LAN PORT INSPECTIONPING TESTSET PC 3.3. LAN3.7. WIFI MAC ADDRESS CHECK 3.5. Model name & Serial number Download3.6. CI+ Key checking method 3.5.1. Model name & Serial number D/L4. Manual Adjustment 4.1.1. Overview4.1.2. Equipment 4.1.3. Download method4.2. White Balance Adjustment 4.2.4. Adj. Command Protocol4.2.1. Overview 4.2.2. Equipment4.5. Magic Motion Remote control test 4.3. EYE-Q function check4.4. Local Dimming Function Check 4.2.7. LED White balance table4.7. Wi-Fi Test 4.6. 3D function test4.8. LNB voltage and 22KHz tone check 4.9. Option selection per country6. USB S/W DownloadService only 5. Audio4.12. GND and Internal Pressure check BLOCK DIAGRAM SideRear HDMIEXPLODED VIEW EAX6430790* LD22* / LC22 EAX6443420* LT22* / LJ22* / LA22* / LB22 NVRAMX-TAL JTAG 10KPLACE AT JACK SIDE Place at JACK SIDEPLACE AT JACK SIDE SMD Gaskit 12.5TGASKITSMDUSB112.5TGASKITSMDUSB3 PLACE AT JACK SIDE PLACE AT MAIN SOC SIDEPLACE AT IC6000 IC701 H5TQ2G63BFR-PBC IC703H5TQ2G63BFR-PBC IC105 LGE2112Only for training and service purposes FROM LIPS & POWER B/D PowerDETPANELPOWER On-semiRenesas MICOM For DebugMICOM MODEL OPTION Eye Sensor OptionHDMI1 UI HDMI3HDMI4 UI HDMI2RGB/ PC AUDIO/ SPDIF SPDIF OUTPC AUDIO JK3603 SLIM-15F-D-2ESD for MTK JACKCOMMONRS232C CVBS 1 PHONE JACKCOMPONENT 1 PHONE JACK IR & KEY Zener Diode isclose to wafer RGB SensorUSBWIFI +5VUSB FOR USB1USB1 USB2 MAX 1.5AFull Scart18 Pin Gender SCART GENDER2011.10.26 ZigBeeRadio Pulse MREMOTE OPTION ALL MREMOTE OPTIONAR4800 1/16WEthernet Block IC5800 STA380BWGP4MT5369 2011.11.21SCART AUDIO MUTE AUDOUT EU/CHINAHOTELOPTIC6000 A Z4580MTR-E1EARPHONE AMP HEADPHONE AMPOption FOR MTK Option FOR LG1152T/C/S & H/NIM & T2/C TUNEREU & CHINA Vout=0.6*1+R1/R2TU6500 TU6501OptionLNB DVB-S2 LNB Part AllegroDCDCGND and AGND are connected DCDCGND and AGND are connected in pin#27AUDIO OUT JACK OPTCOMMEREXTAMP COMMEREXTAMPJACK FOR COMMERCIAL 12V OUT RS-232C 9 PIN OPTCOMMEREXT12VFOR COMMERCIAL AUDIO OUT OPTCOMMEREXTAMP COMMERCIALOPTIONLVDS 51Pin LVDS OUTPUT Connector 41Pin LVDS OUTPUT ConnectorLVDSHIGHMID 2011.08.11LOCAL DIMMING AR7600L/DIMOUT POWER BLOCK THIS IS REVERSE PATTERNLEVEL SHIFTER BLOCK T-ConDon’t Connect Power At VDDI eMMC I/FHYNIXEMMC2GB Just Interal LDO CapacitorPlace Near Micom LOGOLIGHT R8901 10KPage Applicable Model XXLM760S-ZB 2012 LED/LCD TV Engineering guideCONTENT New features Main PCBs Block Diagrams, IIC MapInstruction of new sub ass’ys How to use tool Download Adjust way of new features widevine… Repair guideEPIEmbedded Point-Point Interface Features EPI InterfaceMerits EPI Interface mini-LVDS vs. EPI HF mini-LVDS TCONComparison What to changeHF mini-LVDS Main PCB for Broadband WIFIxxLM760S-ZB Chassis LD22E PCB P/No EAX64307905MTK5369 Block Diagram LM76 Power loadSide RearJack Interface Main SoC MTKFull Scart18 Pin Gender IC6100GP4 Backend block diagram EPI & T-con R 47옴R0 옴 GP4 Backend block diagram EPI & T-Con EPI CH1/2/3EPI CH4/5/6 50PinGP4 Backend block diagram LVDS Tx & Local Dimming LVDS Tx BlockDual-link LVDS Output LVDSSEL “H”=JEIDA, “L” or NC=VESA LGDInterconnection PCBsCables xxLM760S-ZACircuit Block Diagram Ass’y Picture Pin Configuration2012Y IR + Soft touch PCB Pinmap KEY1, KEY2 VoltagePower LED Scenario 2012Y IR + Soft Touch LED Lighting ScenarioSpec 내용 Introductions of GP4 Sensor Touch IC Manual of Touch SensitivityTouch Key Threshold Level Ta = 25ºC Touch EEPROM Register change with USB port Addr ValueIntroductions of 12Y RF ass’y + Magic Remote control 1. System ™ Pairing Information Transmission Send to TV after PairedPairing Information Transmission Sequence ™ Motion Data Transmissionpower mutehome ← ok →3. M4 Block Diagram AA x 2 BatteryPower Management Connector4. Function list 주요 ItemManufacturer Function5. RF Pairing / Un-pairing Method MethodDescription Introductions of 12Y WIFI built in ass’y WIFI Built in ass’y featureLGIT Block diagramPin map WIFI built in featureWIFI Built in Block-diagramArcadyan WIFI Built in ass’y Specification 12Y Widevine & HDCP 2.0 & NETFLX 1. Widevine? 2. HDCP 2.0 & NETFLIX? 3. DTCP? 4. Changed BOM1. Widevine? 2. HDCP 2.0 & NETFLIX? ‰ Netflix‰ Why HDCP2.0? ‰ HDCP3. DTCP? 4. Changed BOM As-WasCurrent Æ 추가Only for training and service purposes Contents of LCD TV Standard Repair Process Contents of LCD TV Standard Repair Process Detail Technical Manual Error symptomContent PageMain B/D↔ Power B/D, LVDS Cable,Speaker Cable,IR B/D Cable A2 Check Power Board 24v outputCheck Power Board 12v,3.5v etc Replace T-con Board or module And Adjust VCOMCheck various voltages of Power Board Revised date3.5V,12V,20V or 24V… Normal Y voltage?Check RF Signal level CheckS/W Version Check S/W Version Color error? A10/ A11Check color by input -External Input COMPONENT -RGB ※ Check andExternal device screen error-Color error Vertical/Horizontal bar, residual image, light spotReplace Main B/D adjust VCOM External Input error Component error RGB error HDMI DVICheck Power LED Power LED Y On?Check Power On ‘”High” Measure voltage of each output of Power B/DError? Check Power Off ModeIf Power Off mode is not displayed Check Power B/D voltage Power off Listof Power Board Check user menu Speaker offCheck audio B+ NormalIn case of External Input signal error Check and fix external device Check audio B+ VoltageCheck & Repair Cable connection Connector solder Check IR Output signalCheck 3.5v on Power B/D Replace Power B/D or Replace Main B/D Power B/D don’t have problemRecognition error External Input andaccordance Identify nose type Adjust VCOM F. Exterior defectContents of LCD TV Standard Repair Process Detail Technical Manual Standard Repair Process Detail Technical Manual ALL MODELS24 Pin Power Board ↔ Main Board Edge LEDSMAW200-H24S YEONHO Only for training and service purposes 1. Checking method for remote controller for adjustment Only for training and service purposes Checking method Only for training and service purposes Appendix Exchange T-Con Board Fuse Open, Abnormal power section Abnormal DisplayGRADATION NoiseAppendix Exchange PSULED driver No LightDim Light No picture/Sound OkAppendix Exchange the Module Un-repairable Cases In this case please exchange the moduleAppendix Exchange the Module Un-repairable Cases In this case please exchange the moduleOnly for training and service purposes When st-by, only 3.5V is normally on For ’10 models, there is no voltage out for st-by purposeEdge LED Edge LED Check “power on” pin is high B. Power error Off when on, off whiling viewing Only for training and service purposes Standard Repair Process Detail Technical ManualALL MODELS dateStandard Repair Process Detail Technical Manual ALL MODELSStandard Repair Process Detail Technical Manual LCD module change T-Con board change