LG Electronics LCD 782LS service manual No Raster

Page 13

2. NO RASTER

NO RASTER

 

 

CHECK

NO

TROUBLE IN

J702 PIN 1, 2, 3

 

 

POWER ADATER

(12V) ?

 

 

or L703, L704

 

 

YES

 

 

CHECK

NO

TROUBLE IN

J702 PIN 8 (5V) ?

 

INVON PATTERN

YES

 

 

CHECK

NO

TROUBLE IN

X501

 

X501

H. PULSE ?

 

 

 

YES

 

 

CHECK

NO

TROUBLE IN

U201(GM5020) ?

 

U201

 

 

YES

 

 

CHECK

NO

TROUBLE IN

L201, L202, L203

 

U201

PULSE?

 

 

 

 

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Image 13
Contents Chassis NO. CL-29 Factory Model LB782G Color MonitorSpecifications ContentsBe Careful Electric Shock PrecautionVideo Sync Timing ChartFront View Rear View Operating InstructionsMenu Button Auto ButtonWiring Diagram Back Cover Removal DisassemblyGM5020 Block DiagramDescription of Block Diagram Block Diagram Power Board Adjustment for White Balance AdjustmentAdjustment Start Adjustment for EdidNo Power Troubleshooting GuideNo Raster Pulse ? No Clock Clock Generator Trouble in DPM Main Board Component Side Printed Circuit BoardPower Board Component Side Power Board Solder Side Exploded View Description Exploded View Parts ListAlternative Parts Replacement Parts ListTransistor Power Board Control Board Pin Name Function PIN ConfigurationSchematic Diagram Lvds Micom DC/DC Connector Control Power Jun