LC-24LE170I
7 – 4
No audio heard (1)
No sound in the UHF/VHF reception.
YES
Is there audio signal input at pin(4) ,(10) of IC1701?
NO
Check connection between IC3301 and IC1701 and its
peripheral circuits.
YES
Is the L-ch audio signal output at pin(20)(21)(23)(24) of IC1701 ?
NO
Check IC1701 and its peripheral circuits.
Is the R-ch audio signal output at pin(26),(27),(29),(30) of
IC1701 normal?
YES
Are the audio signal L-ch and R-ch output at (3) /(4) and (1 ) /(2) of
P1701 normal?
NO
Check circuit between IC1701 & P1701.
YES
Check speakers and their peripheral circuits.
Is the IF output from the tuner pin (1
1
) of TU1101 as specified?
NO
Check TU1101 and its peripheral circuits.
YES
Is there the I2C signal at pins (29), (30) of IC3301?
NO
Check IC3301 and its peripheral circuits.
