LC-52SE94U/LC-52SE941U/LC-65SE94U
6 – 8
No audio (1)
INPUT-1 No audio
INPUT-2 No audio
Is INPUT-1 selected on the input select menu screen?
Is INPUT-2 selected on the input select menu screen?
YES
NO
YES
NO
Is the audio output selected for “VARIABLE” on the
menu screen?
Is the audio output selected for “VARIABLE” on
the menu screen?
Set the audio output to “FIXED”.
Set the audio output to “FIXED”.
Does the audio signal come from pins(4)(L) and (5)(R) of input termi-
nal(J501) to pins(8)(L) and (13)(R) of IC501(AV_SW) on the TERMI-
NAL unit?
Does the audio signal come from pins(4)(L) and (5)(R) of input
terminal(J503) to pins(7)(L) and (12)(R) of IC501(AV_SW) on
the TERMINAL unit?
YES
NO
YES
NO
Check the line between J501 and IC501.
Check the line between J503 and IC501.
Does the audio signal come from pins(20)(L) and (18)(R) of IC501 to pins(51)(L) and (53)(R) of connector(SC501)?
YES
NO
Check the line between IC501 and SC501 its
peripheral circuits.
Are there the audio signal inputs at pins(51)(L) and (53)(R) of connec-
tor(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 con-
nector(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.
