Sharp Aquos LC-37D90U, Руководство по обслуживанию

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LC-37D90U
6 – 11
No audio (1) [With HDMI connected] No audio (2)
[Audio signal] INPUT-1 No audio
[Audio signal] INPUT-4 No audio (HDMI analog
input)
[Audio signal] INPUT-3 No audio (HDMI
connected)
[Audio signal] INPUT-2 No audio
[Audio signal] INPUT-5 No audio (DVI analog
input)
[Audio signal] INPUT-4 No audio (HDMI
connected)
[INPUT-1 input]
Is INPUT-1 selected on the input select menu
screen? [HDMI analog input]
Is INPUT-4 selected on the input select menu
screen? [INPUT-3 input] Is INPUT-3 selected on
the input select menu screen?
[INPUT-2 input]
Is INPUT-2 selected on the input select menu
screen? [DVI analog input]
Is INPUT-5 selected on the input select menu
screen? [INPUT-4 input] Is INPUT-4 selected on
the input select menu screen?
YES
NO
YES
NO
YES
NO
Is the audio output selected for
“VARIABLE” on the menu
screen? Is the audio output selected for “VARI-
ABLE” on the menu screen? Is the audio output selected
for “VARIABLE” on the menu
screen?
YES YES YES
Set the audio output to “FIXED”. Set the audio output to “FIXED”. Set the audio output to
“FIXED”.
[INPUT-1] Does the audio signal come from
pins (12)(L) and (18)(R) of input terminal
(J501) to pins (4)(L) and (2)(R) of connector
(SC502) on the IF unit? [HDMI analog input] Does the audio signal come
from input terminal (J1501) to pins (59)(L) and
(60)(R) of IC1403? [INPUT-3] If no video appears, refer to “No
external input video (HDMI) [INPUT-3]”.
[INPUT-2] Does the audio signal come from
pins (10)(L) and (16)(R) of input terminal
(J501) to pins (12)(L) and (10)(R) of connec-
tor (SC502) on the IF unit? [DVI analog input] Does the audio signal come
from input terminal (J1502) to pins (55)(L) and
(56)(R) of IC1403? [INPUT-4] If no video appears, refer to “No
external input video (HDMI) [INPUT-4]”.
YES
NO
YES
NO YES
Check the audio signal from
J501 to SC502, and their
peripheral circuits. (HDMI analog input)
Check the line between J1501 and
IC1403, and their peripheral circuits. Is the SII9011_MUTE line as specified?
(DVI analog input)
Check the line between J1502 and
IC1403, and their peripheral circuits.
YES
NO
[INPUT-1] Is there the audio signal input at
pins (4)(L) and (2)(R) of connector (SC1102)
on the main unit? Check Q1301, IC1303 and
their peripheral circuits.
[INPUT-2] Is there the audio signal input at
pins (12)(L) and (10)(R) of connector
(SC1102) on the main unit?
Does the HDMI_SPDIF signal come from
pin (70) of IC1508 to pin (2) of IC1403
(CODEC)?
YES
NO