9-8
FL11.10TR
[ Audio Signal Section ]
Check SP801,SP802 and their periphery circuit,
and service it if defective.
Are the audio(L/R) signals inputted to the Pin(3, 40)
of IC801?
Are the audio(L/R) signals inputted to the Pin(3, 5)
of IC2871?
Yes
Yes
Audio is not outputted normally.(Audio input)
FLOW CHART NO.1
Are the audio(L/R) signals inputted to Pin(2, 15)
of IC771?
Check the line between Pin(2, 15) of IC771 and
input terminal(JK2753, JK2754), and service it if
defective.
Yes
No
No
No
Are the audio(L/R) signals outputted to the Pin(1, 2)
of CN801 and CN802?
Are the audio(L/R) signals outputted to the audio
output terminal?
Check IC801 and their periphery circuit, and
service it if defective.
CN801: SP(L)
CN802: SP(R)
JK2871: AUDIO(L)-OUT
JK2872: AUDIO(R)-OUT
No
Yes
Are the audio(L/R) signals inputted to each pin of
CN301?
Replace Digital Main CBA Unit.
Check the line between Pin(6, 8) of CN301 and
Pin(3, 40) of IC801, and service it if defective.
Check the line between Pin(2, 4) of CN301 and
Pin(3, 5) of IC2871, and service it if defective.
No
Check the line between Pin(1, 7) of IC2871 and audio
output terminal(JK2871, JK2872), and service it if
defective.
Pin(6) :
Pin(8) :
Pin(2) :
Pin(4) :
AMP(L)-OUT
AMP(R)-OUT
AUDIO(L)-OUT
AUDIO(R)-OUT
No
