Edge LED Edge LED, SMAW200-H24S YEONHO

Standard Repair Process Detail Technical Manual

	Error	B. Power error _No power	Established	2010. 12 .14
LCD TV	symptom	B. Power error _No power	Established	2010. 12 .14
			date
	Content	Checking method when power is ON	Revised		A19
			Revised
			date
			date

Edge LED

Check “power on” pin is high

24 Pin (Power Board ↔ Main Board)

SMAW200-H24S (YEONHO)

1	Power on	2	24V

3	24V	4	24V

5	GND	6	GND

7	GND	8	GND

9	3.5V	10	3.5V

11	3.5V	12	3.5V

13	GND	14	GND

15	GND	16	GND

17	12V	18	Inverter On/off

19	12V	20	Lamp : A-Dim
			LED : N.C

21	12V	22	PWM Dim #1

23	GND/P_DIM2	24	Error-out

•Lamp SCANNING Model

:PWM Dim #2

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

Page 113

Image 113

LG Electronics 640T-ZA Standard Repair Process Detail Technical Manual, Edge LED Edge LED, Check “power on” pin is high

Contents

32LM640S/640T-ZA MODEL 32LM640S/640TSERVICE MANUAL LED LCD TV Only for training and service purposes CONTENTSCopyright LG Electronics. Inc. All rights reserved IMPORTANT SAFETY NOTICE SAFETY PRECAUTIONSBefore returning the receiver to the customer Leakage Current Cold CheckAntenna Cold Check Electrostatically Sensitive ES Devices SERVICING PRECAUTIONS Replacement IC Remove/ReplacementSmall-Signal Discrete Transistor Removal/Replacement Removal 4. Model General Specification SPECIFICATION1. Application range 2. Requirement for Test 4.0Msymbols/s to 7.2Msymbols/s Symbolratesymbolrate DVB-S2 8PSK / QPSK 2 ~ 45Msymbol/s 6. RGB input PC 5. Component Video Input Y, Cb/Pb, Cr/Pr 7.2. PC mode 7. HDMI Input 7.1. DTV mode 3. Automatic Adjustment ADJUSTMENT INSTRUCTION1. Application Range 2. Designation 3.4. LAN PORT INSPECTIONPING TEST 3.2. MAC address D/L, CI+ key D/L, Widevine key D/L, ESN D/LSET PC 3.3. LAN 3.5. Model name & Serial number Download 3.7. WIFI MAC ADDRESS CHECK3.6. CI+ Key checking method 3.5.1. Model name & Serial number D/L 4.1.1. Overview 4. Manual Adjustment4.1.2. Equipment 4.1.3. Download method 4.2.4. Adj. Command Protocol 4.2. White Balance Adjustment4.2.1. Overview 4.2.2. Equipment 4.3. EYE-Q function check 4.5. Magic Motion Remote control test4.4. Local Dimming Function Check 4.2.7. LED White balance table 4.6. 3D function test 4.7. Wi-Fi Test4.8. LNB voltage and 22KHz tone check 4.9. Option selection per country 4.12. GND and Internal Pressure check 6. USB S/W DownloadService only5. Audio Side BLOCK DIAGRAMRear HDMI IMPORTANT SAFETY NOTICE EXPLODED VIEW NVRAM EAX6430790* LD22* / LC22 EAX6443420* LT22* / LJ22* / LA22* / LB22X-TAL JTAG 10K 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 IC703 IC701 H5TQ2G63BFR-PBCH5TQ2G63BFR-PBC IC105 LGE2112 LGE Internal Use Only PowerDET FROM LIPS & POWER B/DPANELPOWER On-semi For Debug Renesas MICOMMICOM MODEL OPTION Eye Sensor Option UI HDMI3 HDMI1HDMI4 UI HDMI2 SPDIF OUT RGB/ PC AUDIO/ SPDIFPC AUDIO JK3603 SLIM-15F-D-2 JACKCOMMON ESD for MTK COMPONENT 1 PHONE JACK RS232CCVBS 1 PHONE JACK Zener Diode is IR & KEYclose to wafer RGB Sensor +5VUSB FOR USB1 USBWIFIUSB1 USB2 MAX 1.5A 2011.10.26 Full Scart18 Pin GenderSCART GENDER ALL MREMOTE OPTION ZigBeeRadio Pulse MREMOTE OPTIONAR4800 1/16W Ethernet Block STA380BW IC5800GP4MT5369 2011.11.21 AUDOUT EU/CHINAHOTELOPT SCART AUDIO MUTEIC6000 A Z4580MTR-E1 HEADPHONE AMP EARPHONE AMP Option FOR LG1152 Option FOR MTK Vout=0.6*1+R1/R2 T/C/S & H/NIM & T2/C TUNEREU & CHINATU6500 TU6501 DVB-S2 LNB Part Allegro OptionLNBDCDCGND and AGND are connected DCDCGND and AGND are connected in pin#27 FOR COMMERCIAL 12V OUT RS-232C 9 PIN OPTCOMMEREXT12V AUDIO OUT JACK OPTCOMMEREXTAMP COMMEREXTAMPJACKFOR COMMERCIAL AUDIO OUT OPTCOMMEREXTAMP COMMERCIALOPTION 51Pin LVDS OUTPUT Connector 41Pin LVDS OUTPUT Connector LVDSLVDSHIGHMID 2011.08.11 L/DIMOUT LOCAL DIMMINGAR7600 THIS IS REVERSE PATTERN POWER BLOCKLEVEL SHIFTER BLOCK T-Con eMMC I/F Don’t Connect Power At VDDIHYNIXEMMC2GB Just Interal LDO Capacitor LOGOLIGHT R8901 10K Place Near MicomPage 2012 LED/LCD TV Engineering guide Applicable Model XXLM760S-ZB New features Main PCBs Block Diagrams, IIC Map CONTENTInstruction of new sub ass’ys How to use tool Download Adjust way of new features widevine… Repair guide Merits EPIEmbedded Point-Point Interface FeaturesEPI Interface HF mini-LVDS TCON EPI Interface mini-LVDS vs. EPIComparison What to change HF mini-LVDS WIFI Main PCB for BroadbandxxLM760S-ZB Chassis LD22E PCB P/No EAX64307905 Power load MTK5369 Block Diagram LM76Side Rear Main SoC MTK Jack InterfaceFull Scart18 Pin Gender IC6100 R0 옴 GP4 Backend block diagram EPI & T-conR 47옴 EPI CH1/2/3 GP4 Backend block diagram EPI & T-ConEPI CH4/5/6 50Pin LVDS Tx Block GP4 Backend block diagram LVDS Tx & Local DimmingDual-link LVDS Output LVDSSEL “H”=JEIDA, “L” or NC=VESA LGD PCBs InterconnectionCables xxLM760S-ZA Ass’y Picture Pin Configuration Circuit Block Diagram2012Y IR + Soft touch PCB Pinmap KEY1, KEY2 Voltage 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 ™ Pairing Information Transmission Send to TV after Paired 1. SystemPairing Information Transmission Sequence ™ Motion Data Transmission mute powerhome ← ok → AA x 2 Battery 3. M4 Block DiagramPower Management Connector 주요 Item 4. Function listManufacturer Function Description 5. RF Pairing / Un-pairing MethodMethod Introductions of 12Y WIFI built in ass’y Block diagram WIFI Built in ass’y featureLGITPin map WIFI built in feature 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? ‰ Netflix 2. HDCP 2.0 & NETFLIX?‰ Why HDCP2.0? ‰ HDCP 3. DTCP? As-Was 4. Changed BOMCurrent Æ 추가 4. Changed BOM Contents of LCD TV Standard Repair Process Error symptom Contents of LCD TV Standard Repair Process Detail Technical ManualContent Page A2 Check Power Board 24v output Main B/D↔ Power B/D, LVDS Cable,Speaker Cable,IR B/D CableCheck Power Board 12v,3.5v etc Replace T-con Board or module And Adjust VCOM Revised date Check various voltages of Power Board3.5V,12V,20V or 24V… Normal Y voltage? S/W Version Check RF Signal levelCheck Check S/W Version A10/ A11 Color error?Check color by input -External Input COMPONENT -RGB ※ Check and Vertical/Horizontal bar, residual image, light spot External device screen error-Color errorReplace Main B/D adjust VCOM External Input error Component error RGB error HDMI DVI Power LED Y On? Check Power LEDCheck Power On ‘”High” Measure voltage of each output of Power B/D Check Power Off Mode Error?If Power Off mode is not displayed Check Power B/D voltage Power off List Check user menu Speaker off of Power BoardCheck audio B+ Normal Check audio B+ Voltage In case of External Input signal error Check and fix external device Check IR Output signal Check & Repair Cable connection Connector solderCheck 3.5v on Power B/D Replace Power B/D or Replace Main B/D Power B/D don’t have problem accordance Recognition errorExternal Input and Identify nose type F. Exterior defect Adjust VCOM Error symptom ALL MODELS Standard Repair Process Detail Technical Manual SMAW200-H24S YEONHO 24 Pin Power Board ↔ Main BoardEdge LED Standard Repair Process Detail Technical Manual 1. Checking method for remote controller for adjustment Standard Repair Process Detail Technical Manual Checking method Standard Repair Process Detail Technical Manual Appendix Exchange T-Con Board Abnormal Display Fuse Open, Abnormal power sectionGRADATION Noise No Light Appendix Exchange PSULED driverDim Light No picture/Sound Ok 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 Standard Repair Process Detail Technical Manual 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 Standard Repair Process Detail Technical Manual Only for training and service purposesALL MODELS date ALL MODELS Standard Repair Process Detail Technical Manual ALL MODELS LCD module change T-Con board change