Sharp LC-32M400M-BK Service Manual page 35

No PC audio output
Pin (2) of J506: Is L-ch input into the pin (70) of IC3301?
Pin (3) of J506: Is R-ch input into the pin (71) of IC3301?
Are I2S signal output from the pins (180), (181) of IC3301 normally?
Is there L-ch audio signal input at pin(3) of IC2701?
Is there R-ch audio signal input at pin(7) of IC2701?
Is the L-ch audio signal output at pin(27), (28), (29), (30) and (31) of
IC2701 normal?
Is the R-ch audio signal output at pin(11), (12), (13), (14) and (15) of
IC2701 normal?
Are the audio signal L-ch and R-ch output at (3)/(4) and (1)/(2) of
P2701 normal?
Check speakers and their peripheral circuits.
No audio heard (5)
YES
YES
YES
YES
YES
YES
NO Check peripheral circuits of IC3301.
NO Check connection between IC3301 and IC2701 and its
peripheral circuits.
NO Check IC2701 and its peripheral circuits.
NO Check circuit between IC2701 & P2701.
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LC-32M400M-BK/WH/RD