Daewoo DV-2500H, Service Manual

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DV-2500H Service Manual
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3. Servicing Procedures
3.1. Power Supply Trouble Service Flow Chart
Power Supply
Block Trouble
NG
Check F901 Condition Replace F901
OK
Check U901
NG
Pin1/Pin2 Replace U901
Condition
OK
Check
on D101/D102/
D103/D104/D105
Output Voltage Condition
NG
Check on Q103 Pin1
NG
Replace Q103
Voltage Condition 2~5V
NG
NG
Replace U902 Replace TR901
OK
OK
Check CON1/2
Output Voltage