FUNAI LED22-T800M Service Manual page 26

FLOW CHART NO.19
Audio is not outputted normally. (Audio input terminals)
Are the audio(L/R) signals outputted to the specific
terminal?
Are the audio(L/R) signals outputted to Pin(9, 10) of
CN907?
Are the component audio(L/R) signals outputted to
Pin(18,19) of CN907?
Are the PC audio(L/R) signals outputted to Pin(24,25)
of CN907?
Yes (Output to headphone)
Are the audio(L/R) signals outputted to Pin(8,10) of
CN905?
Are the audio(L/R) signals inputted to the Pin(19, 32)
of IC801?
Are the audio(L/R) signals outputted to CN503 and
CN801?
Check CL503, CL801 and their periphery circuit, and
service it if defective.
Are the audio(L/R) signals outputted to Pin(3, 4) of
CN907?
Check JK206 and their periphery circuit, and service it
if defective.
Yes (Output to speakers)
Yes
Yes
Yes
Yes
Check the line between each pin of CN907 and input
terminal and service it if defective.
No
Check the audio(L/R) signal line, and service it if
defective.
No Check the component audio(L/R) signal line, and
service it if defective.
No
Check the PC audio(L/R) signal line, and service it if
defective.
No
Replace Digital Main CBA Unit.
No
Check the line between Pin(8,10) of CN905 and
Pin(19, 32) of IC801, and service it if defective.
No
Check IC801 and the periphery circuit, and service it
if defective.
No
Replace Digital Main CBA Unit.
8-6 A0C76TR