Sharp Aquos LC 37D64U, Руководство по обслуживанию

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LC-32/37D64U
6 – 9
No audio (2)
[HDMI analog audio input] INPUT-5 No audio [PC analog audio input] INPUT-6 No audio
Is INPUT-5 selected on the input select menu screen? Is INPUT-6 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”.
Is the HDMI audio output selected for “Digital” on the
menu screen?
Set the HDMI audio output to “Analog”.
Does the audio signal come from pins(4)(L) and (2)(R) of input ter-
minal(J507) to pins(9)(L) and (14)(R) of IC501(AV_SW) on the
TERMINAL unit? Does the audio signal come from pins(2)(L) and (3)(R) of input termi-
nal(J508) to pins(10)(L) and (15)(R) of IC501(AV_SW) on the TERMINAL
unit?
YES
NO
YES
NO
Check the line between J507 and IC501, and their
peripheral circuits. Check the line between J508 and IC501, and their peripheral
circuits.
Does the audio signal come from pins(20)(L) and (18)(R) of IC501 to pins(69)(L) and (71)(R) of connector(SC501)?
YES
NO
Check the line between IC501 and SC501 its peripheral circuits.
Are there the audio signal inputs at pins(69)(L) and (71)(R) of con-
nector(SC2203) on the MAIN unit? NO Check the line between SC501 and SC2203.
YES
Does the audio signal come from pins(69)(L) and (71)(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(39)(SP_LP) and (43)(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(39)(SP_LP) and
(43)(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(39)(SP_LP) and (43)(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.