Servicing Procedures; Power Supply Trouble Service Flow Chart - Daewoo DN-W552 Service Manual

3. Servicing Procedures

3.1. 1 Power Supply Trouble Service Flow Chart

Power Supply
Block Trouble
Check F1 Condition
Check on DA1/DA2/DA3/DA4
DA5/DA6/DB2/DB3/DB4/DB7/
DB8
Output Voltage Condition
Check on U3
Voltage Condition
Pin1(2.4V)/ Pin2(0V)/ Pin3 (2.6V)
Check on U2
Check on U1
Check C104
Output Voltage
Daewoo DN-W551 Service Manual
NG
OK
OK
NG
NG
NG
NG
NG
22
I nfineon
（ （ （ （
Replace F1
Replace
NG
DA1/DA2/DA3/DA4DA5/DA6/DB
2/DB3/DB4/DB7/DB8
Replace U3
Replace U2
Replace U1
） ） ） ）