Sharp LC-32D44U Service Manual page 47

[HDMI analog audio input] INPUT-5 No audio
Is INPUT-5 selected on the input select menu screen?
Is the audio output selected for "VARIABLE" on
the menu screen?
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".
YES
Does the audio signal come from pins(2)(R) and (4)(L) of input termi-
nal(J507) to pins(43)(L) and (44)(R) of IC1403(CODEC)?
Check the line between J507 and IC1403, and
their peripheral circuits.
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)?
Does the audio signal come from pins(AN28)(SPOUT_LP),
(AN29)(SPOUT_RN), (AP28)(SPOUT_LN), and (AP29)(SPOUT_RP) of
IC8001 to pins(5)(SP_LP),(6)(SP_LN), (8)(SP_RN), and (9)(SP_RP) of
IC2701(AMP)?
Is the audio output from IC2701 as specified?
Check the connector(P2701), speakers and their peripheral circuits.
No audio (2)
NO
NO
YES
YES
YES
[PC analog audio input] INPUT-6 No audio
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
Does the audio signal come from pins(2)(L) and (3)(R) of input termi-
nal(J508) to pins(46)(L) and (47)(R) of IC1403(CODEC)?
Check the line between J508 and IC1403, and their
peripheral circuits.
YES
Check the line between IC1403 and IC8001.
Check the line between IC8001 and IC2701, and their
NO
peripheral circuits. (AMP_MUTE line, etc.)
NO Check IC2701 and its peripheral circuits.
6 – 9
LC-32D44U
NO
NO
NO