Daewoo DV6T812N Service Manual page 19

TROUBLESHOOTING
A. c. LINE2 E-E
No sound in LINE2 E-E
mode.
Is there Audio at IC252
pin#4,11 in LINE2 mode?
YES
Is LINE2 Audio signal output
at IC252 pin#3,13?
YES
C at Q258 is L or H?
L
Check Output JACK.
NO
NO
IC601 pin#27 H
Check
H
A.Mute is L or
IC601.
H?
L
Check
Q257,Q258,R2
40,R241,R242.
Is 12V obtained at IC252
pin#16?
YES
IC601 pin#20 is H?
pin21 is H?
YES
Is about 8V obtained at
IC252 pin#9? Is about 8V
obtained at pin#10 ?
YES
Replace IC252.
18
Check Input LINE2 JACK.
NO
Check POWER circuit.
NO
Check IC601.
NO
Check
R298,R299,R646,R647.