Daewoo DM-K40 - 3.5. Digital Audio Troubleshooting

Daewoo DM-K40 Service Manual
Page 32
3.4. Composite Analogy Audio Trouble Service Flow Chart
Composite Analogy Audio Trouble
NG
Check R8 Signal Replace U1
OK
NG
Check U10 Pin1~3 Signal Replace U1
OK
NG
Check U10 Pin7 +5V Check Power Supply
OK
NG
Check U10 Pin5/8 Signal Replace U10
OK
NG
Check U11 between
Check U11 Pin2/6 Signal
Pin2/6 and Pin3/5 Parts
OK
NG
Check U11 Pin4/8 +/-12V Check Power Supply
OK
NG
Check U11 Pin1/7 Signal Replace U11
OK
Check Q15/Q16 Mute Parts