LG Electronics 32LC2D(B), 37LC2D(B), 42LC2D(B) service manual Pass

Page 21

PASS

No image

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

- 21 -

PASS

Check for S/W error

	NO		YES

Push the POWER
ON key		Check the
		Condition of all PASS
		Condition of all PASS
		Connectors, wafers,
		Connectors, wafers,
		I2C In the
		system.

	Check LVDS		PASS		Check 24bit		PASS
	Check LVDS		PASS		RGB at AR700-		PASS
	Output of Cortez

					AR705
					AR705

	FAIL					FAIL

Replace Cortez

What is

the input signal

mode?

			Check Y/C		FAIL
			Check Y/C
S-Video			Signal at L131,132 on


			Jack board

			PASS

Check Main_YC			Check Sub_YC
At R309,320			At R302,303
	FAIL
	FAIL

Power Error

FAIL

Check 3.3V At L110 on jack board

PASS

Replace Jack Board

Check Power

Levels and crystal

PASS

Replace Hudson

FAIL

Power Error

	Check Q303		FAIL
	Circuit and	9V	FAIL


	at L300

PASS

Replace CXA2069

Correct the circuit

Image 21

Contents CHASSIS LD61A FACTORY NAME 32LC2DB-EC/37LC2DB-EC/42LC2DB-EC READ THE SAFETY PRECAUTIONS IN THIS MANUALBEFORE SERVICING THE CHASSIS SERVICE MANUALCONTENTS CONTENTSPRODUCT SAFETY SPECIFICATIONIMPORTANT SAFETY NOTICE SAFETY PRECAUTIONSGeneral Guidance Leakage Current Hot Check circuitElectrostatically Sensitive ES Devices SERVICING PRECAUTIONSReplacement IC Remove/ReplacementSmall-Signal Discrete Transistor Removal/Replacement Power Output, Transistor Device Removal/Replacement1.General SpecificationTV SPECIFICATIONreatment of the front polarizer 2. General Specification4.Component Video Input Y, PB, PR 3.Optical FeatureLCD Module5. RGB PC INPUT Mode Table 6. RGB DTV INPUT Mode TableRGB-PC EDID DATA 7. HDMI INPUT Mode Table 8. HDMI DTV Mode TableHDMI EDID DATA 8. Mechanical specification 7. Mechanical specification32LC2D Table 1 Scart Arrangement 1.Full ScartTable 2 Scart Arrangement 2.Half Scart 2. Specification ADJUSTMENT INSTRUCTION1. Application Range 3. Channel Memory6. ADC Calibration 5. Select method of Panel sizeBefore AV ADC Calibration, should be executed the Panel size selectionBefore White-balance, the AV ADC should be done 7. White BalanceCase1 EC and FC model use PAL-BGDHI composite signal Cool11000K - x 0.274±0.003, y 0.286±0.003FUNTION SVC REMOCONTROUBLESHOOTING No image attached? Is the input cableNo image PASS No image No image No image No image No image Volume level Of TROUBLESHOOTING AV1, 2, 3, 4/S-VideoAV4/S-Video L/R signal AV1,AV2 ,AV3TROUBLESHOOTING DTV/HDMI-Audio TROUBLESHOOTING RF/Component/PC TDFB-G236P DVB/PAL BLOCK DIAGRAMMainWafer FFC WaferAUDIO/VI DEO SW BLOCK DIAGRAMJackCXA2069Q Sound processor010 020050 EXPLODED VIEW32LC2DDESCRIPTION EXPLODED VIEW PARTS LIST32LC2DEXPLODED VIEW37LC2D EXPLODED VIEW PARTS LIST37LC2D 020080 130030 150 090 EXPLODED VIEW42LC2DEXPLODED VIEW PARTS LIST42LC2D REPLACEMENT PARTS LIST MAIN BOARDCAPACITOR DATE 2006. 05 DATE 2006. 05 DATE 2006. 05 DIODEs COIL & CORE & INDUCTOR RESISTORs TRANSISTORDATE 2006. 05 DATE 2006. 05 DATE 2006. 05 DATE 2006. 05 JACK BOARD OTHERsDATE 2006. 05 COIL & CORE & INDUCTOR DIODEsRESISTORs TRANSISTORDATE 2006. 05 CONTROL BOARD IR/LED BOARD SIDE A/V BOARDPage Page Page Page Page Printed in Korea P/NO 38289S0043