LG Electronics 26CS460/460S/460T-ZA Vertical/Horizontal bar, residual image, light spot, Lcd Tv

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Vertical/Horizontal bar, residual image, light spot

Standard Repair Process

		Error	A. Video error	Established	2012. 01 .14
	LCD TV	Error		date	2012. 01 .14
	LCD TV	symptom	Vertical / Horizontal bar, residual image,	Revised date		6/14
			light spot, external device color error	Revised date		6/14

Vertical/Horizontal bar, residual image, light spot

Replace

Module

☞A7

Check color condition by input -External Input -Component

-RGB

-HDMI/DVI

☞A10

Check Test pattern

Screen Y normal?

N

Replace module

	Check external	Y
	device	Y
	device	Normal?
	connection	Normal?
	connection
	condition
		N
		N

Request repair for external device

☞A8/ A9

Check and replace Link Cable

Screen N normal?

Y

End

Replace Main B/D

N

Screen

normal?

Y

End

External device screen error-Color error

Check S/W Version

Check N version

Y

S/W Upgrade

Normal N screen?

Y

End

Check screen
condition by
input	External
-External Input	Input
-External Input	Input
-Component	error
-RGB
-HDMI/DVI	Component


	error
	RGB
	error
	HDMI/
	DVI

Connect other external device and cable

(Check normal operation of External Input, Component, RGB and HDMI/DVI by connecting Jig, pattern Generator ,Set-top Box etc.

Connect other external device and cable

(Check normal operation of External Input, Component, RGB and HDMI/DVI by connecting Jig, pattern Generator ,Set-top Box etc.

	Screen	N
		N	Replace
			Replace
	normal?		Main B/D

Y

Request repair for external device

Y

Screen N	Replace
normal?	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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Contents SERVICE MANUAL CHASSIS LD21CREAD THE SAFETY PRECAUTIONS IN THIS MANUAL http//aic.lgservice.comSAFETY PRECAUTIONS CONTENTSSERVICING PRECAUTIONS SPECIFICATIONIMPORTANT SAFETY NOTICE SAFETY PRECAUTIONSElectrostatically Sensitive ES Devices SERVICING PRECAUTIONSReplacement IC Remove/ReplacementSmall-Signal Discrete Transistor Removal/Replacement Removal4. Model General Specification SPECIFICATION1. Application range 3. Test methodsymbolrate Symbolrate 4.0Msymbols/s to 7.2Msymbols/sDVB-S2 8PSK / QPSK 2 ~ 45Msymbol/s DVB-S QPSK 2 ~ 45Msymbol/s5. Video resolutions 2D 5.1. Component Input Y, CB/PB, CR/PR5.2. RGB Input PC - LS35/LS34/CS46 series models are not supported PCDVI 5.3. HDMI InputPC/DTVBoot file Download ADJUSTMENT INSTRUCTION1. Application Range 2. Designation3.3. EDID data 3.1. ADC Process3.2. EDID Download 7. ADC Calibration4. Total Assembly line process 4.1. Adjustment Preparation3.4 Function Check 4.2. EYE-Q function check 4.5. Outgoing condition Configuration4.3. 3D function test 4.4. IR emitter inspection5. HI-POT Test 6.1. Signal Table6. Model name & Serial number D/L 5.1. HI-POT auto-check preparation7.1 MAC Address 7. MAC Address & CI+ key download7.2 LAN Inspection 7.3. LAN PORT INSPECTIONPING TESTSide RearLG2111 A IC101LS350T/CS460T Applied Model **LM580T, **560T, **LS350T, **CS460TTDSN G301D560S, **LS350S, **CS460S LS350S/CS460SG001D EXPLODED VIEW PowerDET FROM LIPS & POWER B/D+3.3VNormal +1.5VDDR51Pin LVDS Connector For FHD 60Hz LVDS for large inch30Pin LVDS Connector FOR FHD REVERSE10bitGP4LS7LR22011/06/03 DDR25612 S7LR2DIVXMS10IC1201 H5TQ1G63DFR-H9CGP4LS7LR2 Serial Flash for SPI boot2011/06/03 SFLASH1MBCI Region Option name of this page CISLOT because of Hong Kong10067972-0500LF H/W option ETHERNET GP4LS7LR22011/06/14 ETHERNET21ETHERNET IR/CONTROLW/OIROUT IR/LED and control for on.y ’12 sub without IR-OUTTU2602TU2603 TDSS-G101D TDSN-G301D GP4RGLOBALTUNERBLOCKTU2601 TDSQ-G001DOptionLNB DVB-S2 LNB Part AllegroGP4LS7LR22011/11/02 DVBS27 DCDCGND and AGND are connectedGP4LS7LR22011/11/16 AMPSTA380BWE AUDIO AMPSTA380BWENAND FLASH MEMORY VDDC Normal PowerNormal DDR3USB1DIODES USB SIDEHDMI1 HDMI2EANON SIDE HDMIFor CEC HDMI2COMPONENT Full ScartSCART AUDIO OUT SCART AUDIO MUTEGP4LS7LR22011/09/26 RS-232C 4PINMSTART DEBUG4PIN 2011/09/05MSTAR DEBUG4PIN Page Contents of LCD TV Standard Repair Process Continue to the next page Contents of LCD TV Standard Repair Process Detail Technical ManualError symptom ContentLCD TV A. Video errorMain B/D↔ Power B/D, LVDS Cable,Speaker Cable,IR B/D Cable A2 Check Power Board 24v outputCheck various voltages of PowerBoard 3.5V,12V,20V or 24V…By using Digital signal level meter By using Diagnostics menu on OSD Menu→ Set up→ Support → Signal Test Signal strength Normal over 50%Signal Quality Normal over 50% → Set-Top-Box, Different maker TV etc Check color by input -External Input COMPONENT -RGB A8/ A9※ Check Link CableVertical/Horizontal bar, residual image, light spot External device screen error-Color errorConnect other external device and cable Check color condition by input -External Input -Component RGBCheck Power LED B. Power errorCheck Power On ‘”High” Measure voltage of each output of Power B/DIf Power Off mode is not displayed Check Power B/D voltage Check Power Off ModePOWEROFFABNORMAL1 POWEROFFCPUABNORMAL24V of Power C. Audio errorCheck user menu Speaker off Check audio B+Check audio B+ Voltage In case of External Input signal error Check and fix external deviceD. Function error 1. Remote controlR/C operating errorCheck & Repair Y Check technical Signal information input? - Fix information Check input signalRecognition error Replace Main B/DIdentify nose type E. NoiseF. Exterior defect