Daewoo DN-W552, Service Manual

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Daewoo DN-W551 Service Manual
22
Replace
DA1/DA2/DA3/DA4DA5/DA6/DB
2/DB3/DB4/DB7/DB8
3. Servicing Procedures
3.1. 1 Power Supply Trouble Service Flow Chart
（
（ （
（
Infineon
）
） ）
）
Power Supply
Block Trouble
NG
Check F1 Condition Replace F1
OK
Check on DA1/DA2/DA3/DA4
NG
DA5/DA6/DB2/DB3/DB4/DB7/
DB8
Output Voltage Condition
OK
NG
Check on U3 Replace U3
Voltage Condition
Pin1(2.4V)/ Pin2(0V)/ Pin3 (2.6V)
NG
NG
Check on U2 Replace U2
NG
NG
Check on U1 Replace U1
Check C104
Output Voltage