LG Electronics 42LC2D(B), 32LC2D(B), 37LC2D(B) service manual No image

Page 26

Manual background

No image

Is the	YES Is the input cable			NO	Attach the input
Set ON?			attached?		cable(s)

NO

Push the POWER ON key

	YES

Check the				What is
Condition of all PASS
Connectors, wafers,				the input signal

I2C In the				mode?
system.

		Power Error

			FAIL

Check TMDS	FAIL	Check 5V
	FAIL

HDMI

Signal at AR1206-7		At R1232 on
Signal at AR1206-7		At R1232 on
on main board		Main board

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PASS

								PASS

Check LVDS	PASS		Check 24bit	PASS			Check 24 bit
Check LVDS			RGB at AR700-				RGB signal at
Output of Cortez			RGB at AR700-				RGB signal at
Output of Cortez			AR705				AR1200-1205
			AR705				AR1200-1205

PASS

Check outside connections


Check for S/W error		FAIL

Replace Cortez

PASS

FAIL

Check Power

Levels and crystal

FAIL

Check 1.8V

At L1206 and 3.3V at FAIL L1207 And

crystal

PASS

Power Error

Replace Hudson		FAIL
		FAIL


	Power Error

Replace SiI9011

Image 26

Contents BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUALCHASSIS LD61A FACTORY NAME 32LC2DB-EC/37LC2DB-EC/42LC2DB-EC SERVICE MANUALPRODUCT SAFETY CONTENTSCONTENTS SPECIFICATIONGeneral Guidance SAFETY PRECAUTIONSIMPORTANT SAFETY NOTICE Leakage Current Hot Check circuitSERVICING PRECAUTIONS Electrostatically Sensitive ES DevicesSmall-Signal Discrete Transistor Removal/Replacement IC Remove/ReplacementReplacement Power Output, Transistor Device Removal/ReplacementSPECIFICATION 1.General SpecificationTV2. General Specification reatment of the front polarizer3.Optical FeatureLCD Module 4.Component Video Input Y, PB, PRRGB-PC EDID DATA 5. RGB PC INPUT Mode Table6. RGB DTV INPUT Mode Table HDMI EDID DATA 7. HDMI INPUT Mode Table8. HDMI DTV Mode Table 32LC2D 7. Mechanical specification8. Mechanical specification Table 1 Scart Arrangement 1.Full ScartTable 2 Scart Arrangement 2.Half Scart 1. Application Range ADJUSTMENT INSTRUCTION2. Specification 3. Channel MemoryBefore AV ADC Calibration, should be executed the 5. Select method of Panel size6. ADC Calibration Panel size selectionCase1 EC and FC model use PAL-BGDHI composite signal 7. White BalanceBefore White-balance, the AV ADC should be done Cool11000K - x 0.274±0.003, y 0.286±0.003SVC REMOCON FUNTIONTROUBLESHOOTING No image Is the input cable attached?No image PASS No image No image No image No image No image AV4/S-Video L/R signal TROUBLESHOOTING AV1, 2, 3, 4/S-VideoVolume level Of AV1,AV2 ,AV3TROUBLESHOOTING DTV/HDMI-Audio TROUBLESHOOTING RF/Component/PC Wafer BLOCK DIAGRAMMainTDFB-G236P DVB/PAL FFC WaferCXA2069Q BLOCK DIAGRAMJackAUDIO/VI DEO SW Sound processorEXPLODED VIEW32LC2D 010 020050EXPLODED VIEW PARTS LIST32LC2D DESCRIPTIONEXPLODED VIEW37LC2D EXPLODED VIEW PARTS LIST37LC2D EXPLODED VIEW42LC2D 020080 130030 150 090EXPLODED VIEW PARTS LIST42LC2D CAPACITOR REPLACEMENT PARTS LISTMAIN BOARD DATE 2006. 05 DATE 2006. 05 DATE 2006. 05 DIODEs COIL & CORE & INDUCTOR TRANSISTOR RESISTORsDATE 2006. 05 DATE 2006. 05 DATE 2006. 05 DATE 2006. 05 OTHERs JACK BOARDDATE 2006. 05 DIODEs COIL & CORE & INDUCTORTRANSISTOR RESISTORsDATE 2006. 05 CONTROL BOARD SIDE A/V BOARD IR/LED BOARDPage Page Page Page Page P/NO 38289S0043 Printed in Korea