6-8
L0370TS
3. AUDIO SIGNAL SECTION
Are the SIF signal inputted to the Pin(21) of IC851?
No
Yes
Check TU1,SF,IC11,CF32 and their periphery circuit,
and service it if defective.
Are the audio(L/R) signal inputted to the Pin(4,11) of
IC852?
No
Yes
Check IC851 and the periphery circuit,
and service it if defective.
Are the audio(L/R) signal outputted to the Pin(3,13) of
IC852?
No
Yes
Check IC852 and the periphery circuit,
and service it if defective.
Are the audio(L/R) signal outputted to the Pin(11,14) of
IC801?
No
Yes
Check SP801,SP802,JK801 and their periphery circuit,
and service it if defective.
Check IC801 and the periphery circuit,
and service it if defective.
Are the audio(L/R) signal inputted to the Pin(1,2,12,15)
of IC852?
No
Yes
Check the line between Pin(1,2,12,15) of IC852 and
each Audio input terminals (JK723,JK724,JK729,JK730),
and service it if defective.
Are the audio(L/R) signal outputted to the Pin(3,13) of
IC852?
No
Yes
Check IC852 and the periphery circuit,
and service it if defective.
Are the audio(L/R) signal outputted to the Pin(11,14) of
IC801?
No
Yes
Check SP801,SP802,JK801 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.25
Audio is not outputted normally. (Audio input terminals.)
FLOW CHART NO.26
