Daewoo L510B1 service manual Troubleshooting Hints, Abnormal mode detect

Page 17

TROUBLESHOOTING HINTS

1. Abnormal mode detect

Abnormal mode

detect

Yes

	Is a input			No
	H-sync of ADC(pin 90,			No


	U2) correct?
		Yes
		Yes

	Is waveform			No
	of pin 81 of ADC(U2)			No
	of pin 81 of ADC(U2)
	correct?
		Yes
		Yes


	Trouble
	in Scaler(U1).

Trouble in the H-sync

input circuit.

Trouble

in ADC.

15

Image 17

Contents XGA Color Monitor Contents Fire & Shock Hazard Safety PrecautionsSafety Check Symbols in the manual General Safety InformationSymbols as marked on equipment Terms in the manualGeneral Servicing Precautions Servicing PrecautionsGeneral Soldering Guidelines Electrostatically Sensitive ES DevicesReplacement IC Removal/ReplacementSmall-Signal Discrete Transistor Removal/Replacement Power IC, Transistor or Devices Removal/ReplacementTechnical Information Diode Removal/ReplacementAbbreviations General InformationPin Signal PIN ConnectorHot Key Operation and AdjustmentControl Panel Key Process Adjustment Procedure OSD Functions Adjust the width horizontal size of the screen imageSelf Diagnosis Standard Check point Alignment ProcedureAbnormal mode detect Troubleshooting HintsTrouble in Power on No Raster One color is missing One color is missingNo Video Black Power Problem Mainbord Control Block DiagramPCB Layout Control PCB Component Side Page Schematic Diagram Smps Section Exploded View & Mechanical Parts List Information of Part Description Important Safety NoticePART-NAME PART-DESC Electrical Parts ListLine Across FB2 Carbon Film