LG Electronics 37LC2D(B), 32LC2D(B), 42LC2D(B) service manual Is the input cable, attached?

Page 19

Is the input cable

No image	Is the	YES		NO	Attach the input
No image	Set ON?		Is the input cable		cable(s)
	Set ON?		attached?		cable(s)
			attached?
	NO		YES
	Push the POWER
	ON key		Check the			What is			Power Error
			Condition of all	PASS					Power Error
			Condition of all	PASS
			Connectors, wafers,			the input signal
			I2C In the			mode?			FAIL
			system.
							Check CVBS	FAIL	Check 3.3V
						AV2	Signal at R105		At L110 on jack
							of jack board		board
							PASS		PASS
- 19									Replace Jack board
-		PASS	Check 24bit	PASS					Replace Jack board
-	Check LVDS					Check Main_V	Check Sub_V

			RGB at AR700-
	Output of Cortez		RGB at AR700-			At R309	At R302
PASS	Output of Cortez		AR705			At R309	At R302
			AR705

Check for S/W error	FAIL		FAIL			FAIL
	Replace Cortez					Check Q303
			Check Power			Check Q303	PASS
			Levels and crystal			Circuit and 9V	Replace CXA2069
			Levels and crystal			at L300
	PASS					at L300
	PASS
	Replace Hudson					FAIL	Correct the circuit
	Replace Hudson		FAIL				Correct the circuit
			Power Error

Image 19

Contents SERVICE MANUAL READ THE SAFETY PRECAUTIONS IN THIS MANUALCHASSIS LD61A FACTORY NAME 32LC2DB-EC/37LC2DB-EC/42LC2DB-EC BEFORE SERVICING THE CHASSISSPECIFICATION CONTENTSCONTENTS PRODUCT SAFETYLeakage Current Hot Check circuit SAFETY PRECAUTIONSIMPORTANT SAFETY NOTICE General GuidanceElectrostatically Sensitive ES Devices SERVICING PRECAUTIONSPower Output, Transistor Device Removal/Replacement IC Remove/ReplacementReplacement Small-Signal Discrete Transistor Removal/Replacement1.General SpecificationTV SPECIFICATIONreatment of the front polarizer 2. General Specification4.Component Video Input Y, PB, PR 3.Optical FeatureLCD Module6. RGB DTV INPUT Mode Table 5. RGB PC INPUT Mode TableRGB-PC EDID DATA 8. HDMI DTV Mode Table 7. HDMI INPUT Mode TableHDMI EDID DATA Table 1 Scart Arrangement 1.Full Scart 7. Mechanical specification8. Mechanical specification 32LC2DTable 2 Scart Arrangement 2.Half Scart 3. Channel Memory ADJUSTMENT INSTRUCTION2. Specification 1. Application RangePanel size selection 5. Select method of Panel size6. ADC Calibration Before AV ADC Calibration, should be executed theCool11000K - x 0.274±0.003, y 0.286±0.003 7. White BalanceBefore White-balance, the AV ADC should be done Case1 EC and FC model use PAL-BGDHI composite signalFUNTION SVC REMOCONTROUBLESHOOTING No image attached? Is the input cableNo image PASS No image No image No image No image No image AV1,AV2 ,AV3 TROUBLESHOOTING AV1, 2, 3, 4/S-VideoVolume level Of AV4/S-Video L/R signalTROUBLESHOOTING DTV/HDMI-Audio TROUBLESHOOTING RF/Component/PC FFC Wafer BLOCK DIAGRAMMainTDFB-G236P DVB/PAL WaferSound processor BLOCK DIAGRAMJackAUDIO/VI DEO SW CXA2069Q010 020050 EXPLODED VIEW32LC2DDESCRIPTION EXPLODED VIEW PARTS LIST32LC2DEXPLODED VIEW37LC2D EXPLODED VIEW PARTS LIST37LC2D 020080 130030 150 090 EXPLODED VIEW42LC2DEXPLODED VIEW PARTS LIST42LC2D MAIN BOARD REPLACEMENT PARTS LISTCAPACITOR 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