Daewoo TVZ 1321 Service Manual page 111

C. This flow chart must be used only in Record Mode.
Audio sound is not output when self Record-Playback
RF/AV
Check I503 pin 6
RF(H)/AV(L)
No
Check
I701
Check I501
pin 3
Yes No
Check Change
Q105 I501
Adjust record
current
AV
RF
'H'
Yes
No
Check I503 pin 8
Yes
Check IU01 pin 24
When recording
'H'
Does LU06 pin 5
oscillate ?
Yes
No
Is record current
3.0mVrms
Yes
Check IU01
pin 3 & pin 21
Yes
Check and clean
FE head &
Audio head
Check I503 pin 12
RF(L)/AV(H)
Yes
Check I503 pin 11
Yes
'L"
Check QN06
and IN01
Is the voltage
No
12V at pin 3
of LU06 ?
Yes
Check QU05
Yes
Check LU06
No
Check IU01
109
No
Check I701
No
Check A/V Jack
No
Check power
circuit
No
QU05 and side
components.