FUNAI LH7-M32BB Service Manual page 26

FLOW CHART NO.17
Picture does not appear normally.
Are the DIF signals outputted to Pin(16, 18) of CN403?
Yes
Replace Digital Main CBA Unit or LCD Module
Assembly.
FLOW CHART NO.18
Audio is not outputted normally. (Tuner input (Digital))
Are the DIF signals outputted to Pin(16,18) of CN403?
Are the audio(L/R) signals outputted to Pin(8,10) of
CN403?
Are the audio(L/R) signals inputted to the Pin(1,44)
of IC803?
Are the audio(L/R) signals outputted to CN801 and
CN802?
Check SP801,SP802 and their periphery circuit, and
service it if defective.
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(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 or LCD Module
Assembly.
Yes
Yes
Yes
Yes
Yes
No
Check the line between Pin(16, 18) of CN403 and
Pin(4, 5) of TU1, and TU1(Tuner Unit), and service it
if defective.
No
Check the line between Pin(16, 18) of CN403 and
Pin(4, 5) of TU1, and TU1(Tuner Unit), and service it
if defective.
No
Replace Digital Main CBA Unit.
No
Check the line between Pin(8,10) of CN403 and
Pin(1,44) of IC803, and service it if defective.
No
Check IC803 and the periphery circuit, and service it
if defective.
Check the line between each pin of CN401 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.
7-6 A93F0TR