Sharp LC-32M400M-BK Service Manual page 31

No sound in the UHF/VHF reception.
Is the IF output from the tuner pin (10) of TU1101 as specified?
Is there the I2S signal input at pins (180), (181) of IC3301?
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 (1)
YES
YES
YES
YES
YES
NO Check TU1101 and its peripheral circuits.
NO Check IC3301 and its peripheral circuits.
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