DAEWOO ELECTRONICS DM-K 42, Service Manual

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Daewoo DM-K42 Service Manual
Page 29
3. Servicing Procedures
3.1. Power Supply Trouble Service Flow Chart
Power Supply
Block Trouble
NG
Check F901 Condition Replace F901
OK
Check F901
NG
Pin4/Pin6/ Pin8 Replace F901
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 U302 Replace TR901
OK
OK
Check CON1~4
Output Voltage