FUNAI A0C72EP, Service Manual

Page: 26 / 75

8-6 A0C70TR
Are the DIF signals outputted to Pin(16,18) of CN403?
No
Yes
Check the line between Pin(16, 18) of CN403 and
Pin(4, 5) of TU10, and TU10(Tuner Unit), and service
it if defective.
Audio is not outputted normally. (Tuner input (Digital))
FLOW CHART NO.19
No
Are the audio(L/R) signals inputted to the Pin(1,9)
of IC801?
No
Yes
Are the audio(L/R) signals outputted to Pin(8,10) of
CN403?
Yes
Check the line between Pin(8,10) of CN403 and
Pin(1,9) of IC801, and service it if defective.
Are the audio(L/R) signals outputted to CN801 and
CN802?
No
Yes
Check SP801,SP802 and their periphery circuit, and
service it if defective.
Check IC801 and the periphery circuit, and service it
if defective.
Replace Digital Main CBA Unit.
Audio is not outputted normally. (Audio input terminals)
FLOW CHART NO.20
Check the line between Pin(16, 18) of CN403 and
Pin(4, 5) of TU10, and TU10(Tuner Unit), and service
it if defective.
Are the DIF signals outputted to Pin(16, 18) of CN403?
No
FLOW CHART NO.18
Replace Digital Main CBA Unit or LCD Module
Assembly.
Are the audio(L/R) signals outputted to the specific
terminal?
Check the audio(L/R) signal line, and service it if
defective.
Check the component audio(L/R) signal line, and
service it if defective.
Check the PC audio(L/R) signal line, and service it if
defective.
Check the line between each pin of CN401 and input
terminal and service it if defective.
No
No
No
Yes
Are the audio(L/R) signals outputted to Pin(21,22) of
CN401?
Are the component audio(L/R) signals outputted to
Pin(18,19) of CN401?
Are the PC audio(L/R) signals outputted to Pin(24,25)
of CN401?
Replace Digital Main CBA Unit.
Yes
Picture does not appear normally.