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

LG Electronics 47LM760S/760T-ZB Standard Repair Process, date, External Input and, Component

Models: 47LM760S/760T-ZB 47LM761S/761T-ZA MFL67360901 47LM761S/761T 47LM765S/765T 47LM765S/765T-ZD

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Standard Repair Process

	Error	D. Function error	Established	2010. 12 .14
LCD TV	Error	D. Function error	date	2010. 12 .14
LCD TV	symptom	External device recognition error	Revised date		11/13
		External device recognition error	Revised date		11/13

Check input signal

YCheck technical

Signal information

input? - Fix information

- S/W Version

Check and fix external device/cable

Technical	N	External Input and
Technical	N	Component
information?		Component
information?		Recognition error
		Recognition error
Y
		RGB,HDMI/
Fix in		DVI, Optical
		DVI, Optical
		Recognition error
accordance		Recognition error

with technical

information

Replace Main B/D

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

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LG Electronics 47LM760S/760T-ZB Standard Repair Process, date, External Input and, Component, Recognition error

Contents

47LM761S/761T 47LM761S/761T-ZA 47LM765S/765T 47LM765S/765T-ZD MODEL 47LM760S/760T 47LM760S/760T-ZBSERVICE MANUAL LED LCD TV LG Electronics. Inc. All rights reserved CONTENTSOnly for training and service purposes Copyright Leakage Current Cold CheckAntenna Cold Check SAFETY PRECAUTIONSIMPORTANT SAFETY NOTICE Before returning the receiver to the customer Electrostatically Sensitive ES Devices SERVICING PRECAUTIONS Removal IC Remove/ReplacementReplacement Small-Signal Discrete Transistor Removal/Replacement 2. Requirement for Test SPECIFICATION4. Model General Specification 1. Application range DVB-S2 8PSK / QPSK 2 ~ 45Msymbol/s Symbolrate4.0Msymbols/s to 7.2Msymbols/s symbolrate 6. RGB input PC 5. Component Video Input Y, Cb/Pb, Cr/Pr 7.2. PC mode 7. HDMI Input 7.1. DTV mode 2. Designation ADJUSTMENT INSTRUCTION3. Automatic Adjustment 1. Application Range 3.3. LAN 3.2. MAC address D/L, CI+ key D/L, Widevine key D/L, ESN D/L3.4. LAN PORT INSPECTIONPING TEST SET PC 3.5.1. Model name & Serial number D/L 3.7. WIFI MAC ADDRESS CHECK3.5. Model name & Serial number Download 3.6. CI+ Key checking method 4.1.3. Download method 4. Manual Adjustment4.1.1. Overview 4.1.2. Equipment 4.2.2. Equipment 4.2. White Balance Adjustment4.2.4. Adj. Command Protocol 4.2.1. Overview 4.2.7. LED White balance table 4.5. Magic Motion Remote control test4.3. EYE-Q function check 4.4. Local Dimming Function Check 4.9. Option selection per country 4.7. Wi-Fi Test4.6. 3D function test 4.8. LNB voltage and 22KHz tone check 4.12. GND and Internal Pressure check 6. USB S/W DownloadService only5. Audio HDMI BLOCK DIAGRAMSide Rear EXPLODED VIEW JTAG 10K EAX6430790* LD22* / LC22 EAX6443420* LT22* / LJ22* / LA22* / LB22NVRAM X-TAL PLACE AT JACK SIDE PLACE AT JACK SIDEPlace at JACK SIDE 12.5TGASKITSMDUSB3 SMD Gaskit12.5TGASKITSMDUSB1 PLACE AT IC6000 PLACE AT JACK SIDEPLACE AT MAIN SOC SIDE IC105 LGE2112 IC701 H5TQ2G63BFR-PBCIC703 H5TQ2G63BFR-PBC LGE Internal Use Only On-semi FROM LIPS & POWER B/DPowerDET PANELPOWER Eye Sensor Option Renesas MICOMFor Debug MICOM MODEL OPTION UI HDMI2 HDMI1UI HDMI3 HDMI4 JK3603 SLIM-15F-D-2 RGB/ PC AUDIO/ SPDIFSPDIF OUT PC AUDIO JACKCOMMON ESD for MTK COMPONENT 1 PHONE JACK RS232CCVBS 1 PHONE JACK RGB Sensor IR & KEYZener Diode is close to wafer USB2 MAX 1.5A USBWIFI+5VUSB FOR USB1 USB1 2011.10.26 Full Scart18 Pin GenderSCART GENDER 1/16W ZigBeeRadio Pulse MREMOTE OPTIONALL MREMOTE OPTION AR4800 Ethernet Block 2011.11.21 IC5800STA380BW GP4MT5369 A Z4580MTR-E1 SCART AUDIO MUTEAUDOUT EU/CHINAHOTELOPT IC6000 HEADPHONE AMP EARPHONE AMP Option FOR LG1152 Option FOR MTK TU6501 T/C/S & H/NIM & T2/C TUNEREU & CHINAVout=0.6*1+R1/R2 TU6500 DCDCGND and AGND are connected in pin#27 OptionLNBDVB-S2 LNB Part Allegro DCDCGND and AGND are connected COMMERCIALOPTION AUDIO OUT JACK OPTCOMMEREXTAMP COMMEREXTAMPJACKFOR COMMERCIAL 12V OUT RS-232C 9 PIN OPTCOMMEREXT12V FOR COMMERCIAL AUDIO OUT OPTCOMMEREXTAMP 2011.08.11 LVDS51Pin LVDS OUTPUT Connector 41Pin LVDS OUTPUT Connector LVDSHIGHMID L/DIMOUT LOCAL DIMMINGAR7600 T-Con POWER BLOCKTHIS IS REVERSE PATTERN LEVEL SHIFTER BLOCK Just Interal LDO Capacitor Don’t Connect Power At VDDIeMMC I/F HYNIXEMMC2GB LOGOLIGHT R8901 10K Place Near MicomPage 2012 LED/LCD TV Engineering guide Applicable Model XXLM760S-ZB Adjust way of new features widevine… Repair guide CONTENTNew features Main PCBs Block Diagrams, IIC Map Instruction of new sub ass’ys How to use tool Download Merits EPIEmbedded Point-Point Interface FeaturesEPI Interface What to change EPI Interface mini-LVDS vs. EPIHF mini-LVDS TCON Comparison HF mini-LVDS Chassis LD22E PCB P/No EAX64307905 Main PCB for BroadbandWIFI xxLM760S-ZB Rear MTK5369 Block Diagram LM76Power load Side IC6100 Jack InterfaceMain SoC MTK Full Scart18 Pin Gender R0 옴 GP4 Backend block diagram EPI & T-conR 47옴 50Pin GP4 Backend block diagram EPI & T-ConEPI CH1/2/3 EPI CH4/5/6 LVDSSEL “H”=JEIDA, “L” or NC=VESA LGD GP4 Backend block diagram LVDS Tx & Local DimmingLVDS Tx Block Dual-link LVDS Output xxLM760S-ZA InterconnectionPCBs Cables KEY1, KEY2 Voltage Circuit Block DiagramAss’y Picture Pin Configuration 2012Y IR + Soft touch PCB Pinmap Spec 내용 Power LED Scenario2012Y IR + Soft Touch LED Lighting Scenario Touch Key Threshold Level Ta = 25ºC Introductions of GP4 Sensor Touch ICManual of Touch Sensitivity Addr Value Touch EEPROM Register change with USB port Introductions of 12Y RF ass’y + Magic Remote control ™ Motion Data Transmission 1. System™ Pairing Information Transmission Send to TV after Paired Pairing Information Transmission Sequence ← ok → powermute home Connector 3. M4 Block DiagramAA x 2 Battery Power Management Function 4. Function list주요 Item Manufacturer Description 5. RF Pairing / Un-pairing MethodMethod Introductions of 12Y WIFI built in ass’y WIFI built in feature WIFI Built in ass’y featureLGITBlock diagram Pin map WIFI Built in Block-diagramArcadyan WIFI Built in ass’y Specification 1. Widevine? 2. HDCP 2.0 & NETFLIX? 3. DTCP? 4. Changed BOM 12Y Widevine & HDCP 2.0 & NETFLX 1. Widevine? ‰ HDCP 2. HDCP 2.0 & NETFLIX?‰ Netflix ‰ Why HDCP2.0? 3. DTCP? Æ 추가 4. Changed BOMAs-Was Current LGE Internal Use Only Contents of LCD TV Standard Repair Process Page Contents of LCD TV Standard Repair Process Detail Technical ManualError symptom Content Replace T-con Board or module And Adjust VCOM Main B/D↔ Power B/D, LVDS Cable,Speaker Cable,IR B/D CableA2 Check Power Board 24v output Check Power Board 12v,3.5v etc Normal Y voltage? Check various voltages of Power BoardRevised date 3.5V,12V,20V or 24V… S/W Version Check RF Signal levelCheck Check S/W Version ※ Check and Color error?A10/ A11 Check color by input -External Input COMPONENT -RGB External Input error Component error RGB error HDMI DVI External device screen error-Color errorVertical/Horizontal bar, residual image, light spot Replace Main B/D adjust VCOM Measure voltage of each output of Power B/D Check Power LEDPower LED Y On? Check Power On ‘”High” Power off List Error?Check Power Off Mode If Power Off mode is not displayed Check Power B/D voltage Normal of Power BoardCheck user menu Speaker off Check audio B+ Check audio B+ Voltage In case of External Input signal error Check and fix external device Power 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/D accordance Recognition errorExternal Input and Identify nose type F. Exterior defect Adjust VCOM Page ALL MODELS Standard Repair Process Detail Technical Manual SMAW200-H24S YEONHO 24 Pin Power Board ↔ Main BoardEdge LED date 1. Checking method for remote controller for adjustment date Checking method date Appendix Exchange T-Con Board Noise Fuse Open, Abnormal power sectionAbnormal Display GRADATION No picture/Sound Ok Appendix Exchange PSULED driverNo Light Dim Light Un-repairable Cases In this case please exchange the module Appendix Exchange the Module Un-repairable Cases In this case please exchange the module Appendix Exchange the Module date Edge LED Edge LED When st-by, only 3.5V is normally onFor ’10 models, there is no voltage out for st-by purpose Check “power on” pin is high B. Power error Off when on, off whiling viewing date Only for training and service purposesStandard Repair Process Detail Technical Manual ALL MODELS ALL MODELS Standard Repair Process Detail Technical Manual ALL MODELS LCD module change T-Con board change