LC-52SE94U/LC-52SE941U/LC-65SE94U
6 – 9
No audio (1)
INPUT-3 No audio
Is INPUT-3 selected on the input select menu screen?
YES
NO
Is the audio output selected for “VARI-
ABLE” on the menu screen?
Set the audio output to “FIXED”.
Does the audio signal come from pins(5)(L) and (4)(R)
of input terminal(J901) to pins(3)(L) and (1)(R) of
P901 on the SIDE unit?
YES
NO
Check the line between J901 and P901,
and their peripheral circuits.
Are there the audio signal inputs at pins(3)(L) and
(1)(R) of P501 on the TERMINAL unit?
YES
NO
Check the line between P501 and P901.
Does the audio signal come from pins(3)(L) and (1)(R)
of P501 to pins(6) and (11) of IC501 on the TERMI-
NAL unit?
YES
NO
Check the line between P501 and IC501,
and their peripheral circuits.
Does the audio signal come from pins(20)(L) and (18)(R) of IC501 to pins(51)(L) and (53)(R) of con-
nector(SC501)?
NO
Check the line between IC501 and
SC501 its peripheral circuits.
YES
Are there the audio signal inputs at pins(51)(L) and (53)(R) of connector(SC2203) on the MAIN unit? NO
Check the line between SC501 and
SC2203.
YES
Does the audio signal come from pins(51)(L) and (53)(R) of SC2203 to pins(35)(L) and (36)(R) of
IC1403(CODEC)?
NO
Check the line between IC1403
and SC2203.
YES
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 connector(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 cir-
cuits. (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.
