Daewoo DV6T812N Service Manual page 21

TROUBLESHOOTING
B. No Hi-Fi playback audio (PLAY MODE)
Is the voltage at IC251 pin#44
over 3.2V ?
Is A.SW Signal input at IC251
pin#41?
Is there Playback Audio signal
at IC251 pin#19,20?
YES
Is thereAudio at IC252
pin#5,14?
YES
Is Playback Audio signal
output at IC252 pin#3, 13?
YES
C at Q258 is L or H?
L
Check Output JACK.
NO
Is 12V obtained at IC252
pin#16?
YES
IC601 pin#20 is H?
pin#21 is L?
YES
Is about 3.5V obtained at
IC252 pin#9? Is about 8V
obtained at pin#10 ?
YES
Replace IC252.
20
NO
Check DRUM connector
and DRUM
NO
Check A.SW at IC601 pin#19
NO
Replace IC251.
NO
Check signal circuit IC251
to IC252
NO
Check power circuit
NO
Check IC601.
NO
Check R298,R299 R646,R647.
H
Check MUTE circuit.