Philips 32MF338B/27, Руководство по обслуживанию

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FUZ2.0U LA 29
7.3 Audio Signal Section
Are the SIF signal inputted to the Pin(9) of CN303?
No
Yes
Check TU1, Q4, Q5 and their periphery circuit,
and service it if defective.
No
Are the audio(L/R) signals outputted to the Pin(14,15)
of IC701?
No
Yes
Are the audio data signal outputted to the Pin(6) of
CN302?
Yes
Check IC701 and the periphery circuit,
and service it if defective.
Are the audio(L/R) signals outputted to the Pin(1,7)
of IC702?
No
Yes
Check IC702 and the periphery circuit,
and service it if defective.
Are the audio(L/R) signals outputted to the Pin(1,2)
of 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.
Audio is not outputted normally. (Tuner input)
FLOW CHART NO.21
Are the DIF signals outputted to the Pin(20, 22)
of CN303?
No
Yes
Check the line between Pin(20, 22) of CN303 and
Pin(20, 21) of TU1 and TU1(Tuner Unit),
and service it if defective.
Audio is not outputted normally. (Tuner input (Digital))
FLOW CHART NO.22
Replace Digital Main Board Unit.
No
Are the audio(L/R) signals outputted to the Pin(14,15)
of IC701?
No
Yes
Are the audio data signal outputted to the Pin(6) of
CN302?
Yes
Check IC701 and the periphery circuit,
and service it if defective.
Are the audio(L/R) signals outputted to the Pin(1,7)
of IC702?
No
Yes
Check IC702 and the periphery circuit,
and service it if defective.
Are the audio(L/R) signals outputted to the Pin(1,2)
of 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 Board Unit.