Sharp LC-15AV7U User Manual

7-8
A7121TS
3. AUDIO SIGNAL SECTION
Are the SIF signal inputted to the Pin(21) of IC851?
No
Ye s
Check TU61, IC31, SF11 and their periphery circuit,
and service it if defective.
Are the audio(L/R) signals inputted to the Pins(1,12) of
IC852?
No
Ye s
Check IC851 and the periphery circuit,
and service it if defective.
Are the audio(L/R) signals outputted to the Pins(3,13)
of IC852?
No
Ye s
Check IC852 and the periphery circuit,
and service it if defective.
Are the audio(L/R) signals outputted to the Pins(11,14)
of IC801?
No
Ye s
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.24
Are the DIF signals outputted to the Pins(11, 12)
of CN62?
No
Ye s
Check the line between Pins(11, 12) of CN62 and
TU61, and service it defective.
Are the audio (L/R) signals outputted to the
Pin(15, 16) of CN62?
No
Ye s
Replace DTV MODULE CBA UNIT.
Are the audio (L/R) signals inputted to the
Pins(5, 14) of IC852?
No
Ye s
Check the line between Pins(5, 14) of IC852 and
CN62, and service it defective.
Are the audio (L/R) signals outputted to the
Pins(11, 14) of IC801?
No
Ye s
Are the audio (L/R) signals outputted to the
Pins(3, 13) of IC852?
Check SP801, SP802, JK801 and their periphery
circuit, and service it if defective.
Ye s
Check IC852 and the periphery circuit,
and service it if defective.
No
Check IC801 and the periphery circuit,
and service it if defective.
Audio is not outputted normally. (Tuner input (Digital))
FLOW CHART NO.25

Sharp LC-15AV7U Specifications

General

Brand	Sharp
Model	LC-15AV7U
Category	TV
Language	English