LC-52SE94U/LC-52SE941U/LC-65SE94U
6 – 12
No audio (4)
INPUT-4 No audio (HDMI connected)
INPUT-5 No audio (HDMI connected)
INPUT-6 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?
[INPUT-6 input]
Is INPUT-6 selected on the input select menu screen?
YES
NO
Is the audio output selected for
“VARIABLE” on the menu screen?
Set the audio output to “FIXED”.
[INPUT-4 input] If no video appears, refer to “No external input video
(HDMI) [INPUT-4]”.
[INPUT-5 input] If no video appears, refer to “No external input video
(HDMI) [INPUT-5]”.
[INPUT-6 input] If no video appears, refer to “No external input video
(HDMI) [INPUT-6]”.
YES
Is the HDMI_MUTE line as specified?
YES
NO
Check Q1301, IC1302 and their
peripheral circuits.
Does the audio signal come from pins(4)(COD_LRCK), (5)(COD_BCK) and
(6)(COD_SDOUT) of IC1403 to pins(AK24), (AH24) and (AJ24) of IC8001(CPU)?
NO
Check the line between IC1403 and IC8001.
YES
Does the audio signal come from pins(AJ25)(DSP_LRCK), (AK25)(DSP_BCKIN),
(AL25)(DSP_SDIN1) and (L32)(DSP_SDIN2) of IC8001 to pins(2), (3), (6) and (4)
of IC1402(SOUND_DSP)?
NO
Check the line between IC8001 and IC1402.
YES
Does the audio signal come from pins(19)(DSP_SDOUT1) and
(21)(DSP_SDOUT3) of IC1402 to pins(11) and (12) of IC1403(CODEC)?
NO
Check the line between IC1402 and IC1403.
Does the audio signal come from pins(AJ25)(DSP_LRCK), (AK25)(DSP_BCKIN)
and (AL24)(DSP_MCLK) of IC8001 to pins(8), (9) and (10) of IC1403?
NO
Check the line between IC8001 and IC1403.
YES
Does the audio signal come from pins(17)(SPOUT_LP) and (18)(SPOUT_RP) of
IC1403 to pins(21)(SP_LP) and (25)(SP_RP) of connector(SC2203) on the MAIN
unit?
NO
Check the line between SC2203 and IC1403.
(D1305, D1312, Q1306 and Q1307, etc.)
YES
Are there the audio signal inputs at pins(21)(SP_LP) and (25)(SP_RP) of connec-
tor(SC501) on the TERMINAL unit?
NO
Check the line between SC501 and SC2203.
YES
Does the audio signal come from pins(21)(SP_LP) and (25)(SP_RP) of SC501 to
pins(5)(SP_LP) and (9)(SP_RP) of IC2701(AMP) on the TERMINAL unit?
NO
Check the line between SC501 and IC2701,
and their peripheral circuits. (AMP_MUTE line,
etc.)
YES
Is the audio output from IC2701 as specified?
NO
Check IC2701 and its peripheral circuits.
YES
Check the connector(P2701), speakers and their peripheral circuits.
