Sharp LC-32D62U Service Manual page 41

[with HDMI connected] No audio (2)
[Audio signal] INPUT-4 No audio (HDMI connected)
[Audio signal] INPUT-5 No audio (HDMI connected)
[INPUT-4 input] Is INPUT-4 selected
on the input select menu screen?
[INPUT-5 input] Is INPUT-5 selected
on the input select menu screen?
YES
[INPUT-4] If no video appears, refer to
"No external input video (HDMI)
[INPUT-4]".
[INPUT-5] If no video appears, refer to
"No external input video (HDMI)
[INPUT-5]".
YES
Is the SII9011 (pin (77) of IC1510)
_MUTE line as specified?
YES
Does the HDMI_SPDIF signal come
from pin (78) of IC1510 to pin (2) of
IC1404 (CODEC)?
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 there 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?
YES
Set the audio output to "FIXED".
NO Check Q1301, IC1303 and their
peripheral circuits.
NO Check the line between IC1510,
IC1404 and their peripheral cir-
cuits.
YES
YES
YES
YES
YES
6 – 9
LC-32D62U/LC-37D62U 1st
No audio in all modes (3)
YES
NO Check IC1404 and its periph-
eral circuits.
NO Check the line between IC1404
and SC1301.
NO Check the SC1301 and P2704
connectors.
NO Check the line between P2704
and IC2701, and their periph-
eral circuits (AMP_MUTE line).
NO Check IC2701 and its periph-
eral circuits.