Sharp AQUOS LC-32D62U, Service Manual

Page: 41 / 162

LC-32D62U/LC-37D62U 1st
6 – 9
[with HDMI connected] No audio (2) No audio in all modes (3)
YES
[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? NO Is the audio output selected for
“VARIABLE” on the menu
screen?
[INPUT-5 input] Is INPUT-5 selected
on the input select menu screen?
YES
YES
Set the audio output to “FIXED”.
[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? NO Check Q1301, IC1303 and their
peripheral circuits.
YES
Does the HDMI_SPDIF signal come
from pin (78) of IC1510 to pin (2) of
IC1404 (CODEC)? NO Check the line between IC1510,
IC1404 and their peripheral cir-
cuits.
YES
Is there the audio signal output at pins (38) (L) and (39) (R) of IC1404? NO Check IC1404 and its periph-
eral circuits.
YES
Is there the audio signal output at pins (11) (L) and (14) (R) of connector (SC1301) on the MAIN unit? NO Check the line between IC1404
and SC1301.
YES
Is there the audio signal input at pins (11) (L) and (14) (R) of connector (P2704) on the TERMINAL
unit? NO Check the SC1301 and P2704
connectors.
YES
Is there the audio signal input at pins (5) (L) and (3) (R) of IC2701 (STEREO_AMP)? NO Check the line between P2704
and IC2701, and their periph-
eral circuits (AMP_MUTE line).
YES
Is there the audio output from IC2701 as specified? NO Check IC2701 and its periph-
eral circuits.
YES
Check the connector (P2703), speakers and their peripheral circuits.