Sharp LC-46D92U Service Manual page 61

[Audio signal] INPUT-6 No audio (HDMI analog input)
[HDMI analog input]
Is INPUT-6 selected on the input select menu screen?
Is the audio output selected for "VARIABLE" on the menu
screen?
Set the audio output to "FIXED"
YES
[HDMI analog input]
Does the audio signal come from pins (4) (L) and (2) (R) of input termi-
nal (J1501) to pins (57) (L) and (58) (R) of IC1404?
[HDMI analog input]
Check the line between J1501 and IC1404, and their
peripheral circuits.
YES
Is ther 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 Audio (1)
[DVI-I analog input]
Is INPUT-7 selected on the input select menu screen?
NO
YES
[DVI-I analog input]
Does the audio signal come from pins (2) (L) and (3) (R) of input termi-
nal (J1502) to pins (55) (L) and (56) (R) of IC1404?
NO
YES
YES
YES
YES
YES
4 – 13
[Audio signal] INPUT-7 No audio (DVI-I analog input)
Is the audio output selected for "VARIABLE" on the menu
screen?
Set the audio output to "FIXED"
YES
[DVI-I analog input]
Check the line between J1502 and IC1404, and their
peripheral circuits.
YES
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
NO
(AMP_MUTE line).
Check IC2701 and its peripheral circuit.
NO
LC-46D92U/LC-52D92U
NO
YES
NO