Sharp LC-20AV7U Service Manual - Page 27

Flow Chart No.27

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FLOW CHART NO.27 Audio is not outputted normally. (Audio input terminals) Are the audio (L/R) signals inputted to the No Pins(2,4,11,15) of IC852? Yes Are the audio (L/R) signals outputted to the Pins(3,13) No of IC852? Yes Are the audio (L/R) signals outputted to the No Pins(11,14) of IC801? Yes Check SP801, SP802, JK801 and their periphery circuit, and service it if defective. Check the line between Pins(2,4,11,15) of IC852 and each Audio input terminals (JK704, JK705, JK709, JK710), and service it if defective. Check IC852 and the periphery circuit, and service it if defective. Check IC801 and the periphery circuit, and service it if defective. 7-10 A7144_45TS

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7-10
A7144_45TS
Are the audio (L/R) signals inputted to the
Pins(2,4,11,15) of IC852?
No
Yes
Check the line between Pins(2,4,11,15) of IC852 and
each Audio input terminals (JK704, JK705, JK709,
JK710), and service it if defective.
Are the audio (L/R) signals outputted to the Pins(3,13)
of IC852?
No
Yes
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
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. (Audio input terminals)
FLOW CHART NO.27