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

Page 25

Manual background

No image	Is the	YES	Is the input		NO	Attach the input
No image	Set ON?		cable attached?			cable(s)
	Set ON?		cable attached?			cable(s)
	NO		YES
	Push the POWER
	ON key		Check the				What is
			Condition of all		PASS		What is
			Connectors, wafers,				the input signal
			I2C In the				mode?
			system.
							RGB
									PASS		Power Error
									PASS
- 25 -											FAIL
- 25 -				PASS			Check 24bit	PASS	Check RGB	FAIL	Check 3.3V
		Check LVDS					Check 24bit		HV signal at R513		Check 3.3V
		Check LVDS				RGB at AR700-			HV signal at R513		At L500 on jack
		Output of Cortez				RGB at AR700-			512,509,510,515		At L500 on jack
	PASS	Output of Cortez					AR705		512,509,510,515		board
							AR705		On Jack board		board
									On Jack board
	Check for S/W error		FAIL								FAIL
	Check for S/W error		FAIL				FAIL
							FAIL
											Replace Jack Board
		Replace Cortez
						Check Power
						Levels and crystal
			PASS
			Replace Hudson				FAIL
							FAIL
					Power Error

Image 25

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 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 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 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