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LC-32GP1U/LC-37GP1U 1st
[Audio signal] INPUT-6 No audio (HDMI analog input)
[HDMI analog input]
Is INPUT-6 selected on the
input select menu screen?
YES
[HDMI analog input]
Does the audio signal come
from pins (4) (L) and (2) (R)
of input terminal (J1501) to
pins (57) (L) and (58) (R) of
IC1404?
YES
Is there the audio signal output at pins (38) (L) and (39) (R) of IC1404?
Is there the audio signal output at pins (11) (L) and (14) (R) of connector (SC1301) on the MAIN unit?
Is there the audio signal input at pins (11) (L) and (14) (R) of connector (P2704) on the TERMINAL unit?
Is there the audio signal input at pins (5) (L) and (3) (R) of IC2701 (STEREO_AMP)?
Is the audio output from IC2701 as specified?
Check the connector (P2703), speakers and their peripheral circuits.
NO
Is the audio output selected
for "VARIABLE" on the
menu screen?
NO
[HDMI analog input]
Check the line between
J1501 and IC1404, and their
peripheral circuits.
YES
YES
YES
YES
YES
No Audio (1)
[Audio signal] INPUT-7 No audio (DVI-I analog input)
[DVI-I analog input]
Is INPUT-7 selected on the
input select menu screen?
YES
[DVI-I analog input]
Does the audio signal come
from pins (2) (L) and (3) (R)
of input terminal (J1502) to
pins (55) (L) and (56) (R) of
IC1404?
YES
6 – 8
NO
Is the audio output selected
for "VARIABLE" on the
menu screen?
NO
[DVI-I analog input]
Check the line between
J1502 and IC1404, and their
peripheral circuits.
NO
Check IC1404 and its
peripheral circuits.
NO
Check the line between
IC1404 and SC1301.
NO
Check the IC1301and
P2704 connectors.
NO
Check the line between
P2704 and IC2701, and
their peripheral circuits
(AMP_MUTE line).
NO
Check IC2701 and its
peripheral circuits.
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Troubleshooting
