LG Electronics 32LS350S-ZA A8/ A9, A. Video error, Lcd Tv, ※ Check, Link Cable, LVDS and, contact

Page 44

Standard Repair Process

	Error	A. Video error	Established	2012. 01 .14
LCD TV	Error	A. Video error	date	2012. 01 .14
LCD TV	symptom	Color error	Revised date		5/14
		Color error	Revised date		5/14

☞A7

Check color by input -External Input

-COMPONENT -RGB

Color error?

☞A8/ A9

※ Check

and replace

Link Cable

(LVDS) and

contact

Color error?

Replace Main B/D

Color error?

Replace module

-HDMI/DVI

Check error color input mode

condition

End

☞A10

Check Test pattern

External Input/

Component

error

Check external device and cable

External device Y

/Cable

normal

Request repair

for external device/cable

Replace Main B/D

		N
		External device Y
RGB/	Check external	External device Y
HDMI/DVI	device and	/Cable
error	cable	normal

Replace Main B/D

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

Image 44

Contents CHASSIS LD21C SERVICE MANUALREAD THE SAFETY PRECAUTIONS IN THIS MANUAL http//aic.lgservice.comCONTENTS SAFETY PRECAUTIONSSERVICING PRECAUTIONS SPECIFICATIONSAFETY PRECAUTIONS IMPORTANT SAFETY NOTICESERVICING PRECAUTIONS Electrostatically Sensitive ES DevicesIC Remove/Replacement ReplacementSmall-Signal Discrete Transistor Removal/Replacement RemovalSPECIFICATION 4. Model General Specification1. Application range 3. Test methodSymbolrate 4.0Msymbols/s to 7.2Msymbols/s symbolrateDVB-S2 8PSK / QPSK 2 ~ 45Msymbol/s DVB-S QPSK 2 ~ 45Msymbol/s5.2. RGB Input PC - LS35/LS34/CS46 series models are not supported 5. Video resolutions 2D5.1. Component Input Y, CB/PB, CR/PR 5.3. HDMI InputPC/DTV PCDVIADJUSTMENT INSTRUCTION Boot file Download1. Application Range 2. Designation3.1. ADC Process 3.3. EDID data3.2. EDID Download 7. ADC Calibration3.4 Function Check 4. Total Assembly line process4.1. Adjustment Preparation 4.2. EYE-Q function check 4.3. 3D function test4.4. IR emitter inspection Manual W/B process using adjust Remote control6.1. Signal Table 5. HI-POT Test6. Model name & Serial number D/L 5.1. HI-POT auto-check preparation7. MAC Address & CI+ key download 7.1 MAC Address7.2 LAN Inspection 7.3. LAN PORT INSPECTIONPING TESTRear SideLG2111 A IC101Applied Model **LM580T, **560T, **LS350T, **CS460T LS350T/CS460TTDSN G301DG001D 560S, **LS350S, **CS460SLS350S/CS460S EXPLODED VIEW IMPORTANT SAFETY NOTICEFROM LIPS & POWER B/D PowerDET+3.3VNormal +1.5VDDRLVDS for large inch 51Pin LVDS Connector For FHD 60Hz30Pin LVDS Connector FOR FHD REVERSE10bitS7LR2DIVXMS10 GP4LS7LR22011/06/03 DDR25612IC1201 H5TQ1G63DFR-H9CSerial Flash for SPI boot GP4LS7LR22011/06/03 SFLASH1MB10067972-0500LF CI RegionOption name of this page CISLOT because of Hong Kong ETHERNET H/W option ETHERNETGP4LS7LR22011/06/14 ETHERNET21 IR/LED and control for on.y ’12 sub without IR-OUT IR/CONTROLW/OIROUTGP4RGLOBALTUNERBLOCK TU2602TU2603 TDSS-G101D TDSN-G301DTU2601 TDSQ-G001DDVB-S2 LNB Part Allegro OptionLNBGP4LS7LR22011/11/02 DVBS27 DCDCGND and AGND are connectedAUDIO AMPSTA380BWE GP4LS7LR22011/11/16 AMPSTA380BWENAND FLASH MEMORY Normal Power VDDCNormal DDR3USB SIDE USB1DIODESHDMI2EANON SIDE HDMI HDMI1For CEC HDMI2Full Scart COMPONENTSCART AUDIO OUT SCART AUDIO MUTERS-232C 4PIN GP4LS7LR22011/09/26MSTAR DEBUG4PIN MSTART DEBUG4PIN2011/09/05 Page Contents of LCD TV Standard Repair Process Contents of LCD TV Standard Repair Process Detail Technical Manual Continue to the next pageError symptom ContentA. Video error LCD TVMain B/D↔ Power B/D, LVDS Cable,Speaker Cable,IR B/D Cable A2 Check Power Board 24v outputvoltages of Power Check variousBoard 3.5V,12V,20V or 24V…Signal Quality Normal over 50% By using Digital signal level meter By using Diagnostics menu on OSDMenu→ Set up→ Support → Signal Test Signal strength Normal over 50% → Set-Top-Box, Different maker TV etc A8/ A9 Check color by input -External Input COMPONENT -RGB※ Check Link CableExternal device screen error-Color error Vertical/Horizontal bar, residual image, light spotConnect other external device and cable Check color condition by input -External Input -Component RGBB. Power error Check Power LEDCheck Power On ‘”High” Measure voltage of each output of Power B/DCheck Power Off Mode If Power Off mode is not displayed Check Power B/D voltagePOWEROFFABNORMAL1 POWEROFFCPUABNORMALC. Audio error 24V of PowerCheck user menu Speaker off Check audio B+In case of External Input signal error Check and fix external device Check audio B+ VoltageCheck & Repair D. Function error1. Remote controlR/C operating error Check input signal Y Check technical Signal information input? - Fix informationRecognition error Replace Main B/DE. Noise Identify nose typeF. Exterior defect