Daewoo DVN-14F6N Service Manual page 101

B.
No sound in the playback mode
Yes
Is the output at pin 22
of IU01 ?
Yes
Is the signal applied to pin
1 of I501
Yes
Is the output at pin 4 of I501
Yes
Check I501
No
Is 11V applied to pin
No No
Is Q101
base 'H'?
Yes
Check Check I701
I501 pin42
No
Check
I601
98
7 of IU01 ?
Yes
Is 5V applied to pin
11 of IU01 ?
Yes
Is pin 24 of of
IU01 0V ?
Yes
No
Is pin 3 of IU01
Ground ?
Yes
Check pin 3,4
of PAN05
No
Check power
circuit
No
Check QN07
No
Check QN06
Check IU01