Daewoo L510B1 service manual Trouble in Power on

Page 18

2. Trouble in Power on

Is the

Power LED toggled On between on and

off?

		Off

	Is the power		No
	cord well		No
	cord well
	connected?

Yes

Check the		No
waveform of pin 7
waveform of pin 7
of -com.
	Yes
	Yes

	Is 5VS line	No
	normal(pin 8 of CN2)?	No
	normal(pin 8 of CN2)?

Yes

Check on Scaler(U1).

Refer to No video

or No raster.

Check if the power switch

is on position and Connect the power cord correctly.

Trouble in U6 & Q5

and its ambient circuit.

Check the power board

(5VS of CN2A).

16

Image 18

Contents XGA Color Monitor Contents Safety Precautions Safety CheckFire & Shock Hazard Symbols as marked on equipment General Safety InformationSymbols in the manual Terms in the manualServicing Precautions General Servicing PrecautionsElectrostatically Sensitive ES Devices General Soldering GuidelinesSmall-Signal Discrete Transistor Removal/Replacement IC Removal/ReplacementReplacement Power IC, Transistor or Devices Removal/ReplacementDiode Removal/Replacement Technical InformationGeneral Information AbbreviationsPIN Connector Pin SignalOperation and Adjustment Control PanelHot Key Key Process Adjustment Procedure Adjust the width horizontal size of the screen image OSD FunctionsSelf Diagnosis Alignment Procedure Standard Check pointTroubleshooting Hints Abnormal mode detectTrouble in Power on No Raster One color is missing One color is missingNo Video Black Power Problem Block Diagram Mainbord ControlPCB Layout Control PCB Component Side Page Schematic Diagram Smps Section Exploded View & Mechanical Parts List Important Safety Notice Information of Part DescriptionElectrical Parts List PART-NAME PART-DESCLine Across FB2 Carbon Film