LC-32L407I
6 – 7
No audio heard (3)
No HDMI sound heard. <INPUT 1>
(*INPUT 1 is digital audio.)
Does the HDMI image appear onscreen?
NO
Refer to “<INPUT 1> in No external input video onscreen
(HDMI)”.
YES
No audio output from INPUT 1.
NO
Check the EDID.
YES
Are waveforms input in to the pins of IC3301 normally and I2S out-
put from the pins (180), (181) normally?
NO
Check peripheral circuits of IC3301.
YES
Is there L-ch audio signal input at pin(3) of IC2701?
NO
Check connection between IC3301 and IC2701 and its periph-
eral circuits.
Is there R-ch audio signal input at pin(7) of IC2701?
YES
Is the L-ch audio signal output at pin(27), (28), (29) and (30) of
IC2701 normal?
NO
Check IC2701 and its peripheral circuits.
Is the R-ch audio signal output at pin(11), (12), (13) and (14) of
IC2701 normal?
YES
Are the audio signal L-ch and R-ch output at (1)/(2) and (3)/(4) of
P2701 normal?
NO
Check circuit between IC2701 & P2701.
YES
Check speakers and their peripheral circuits.
