Sharp Aquos LC-60LE740E, Руководство по обслуживанию

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LC-60/70LE740E/RU,741E/S,743E,60LE840E/RU,841E/S,843E,80LE645E/RU,646E/S,648E
6 – 44
The sound is not emitted from the Speaker.
No sound output in all modes?
YES
Do audio signals output from pins [Y30/CPU_AOLRCK, Y31/
CPU_AOBCK, Y32/CPU_AOMCLK, V27/CPU_AOSDATA0] of
IC3303 (Digital AV decode & Main CPU) ? NO Check IC3303 and its peripheral circuits.
YES
Do audio signals input to pins[5/AMP_MCLK ,6/
AMP_DATA_LR,, 7/AMP_BCLK, 8/AMP_LRCLK] of IC2703
(SP_AMP) ? NO Check the line between IC3303 and IC2703.
YES
Do audio signals output from pins
[28/OUTML, 30/OUTPL, 12/OUTPR, 14/OUTMR] of IC2703 ? NO Check IC2703 and its peripheral circuits.
YES
DIs AMP_MUTE [pin(21)] of IC2703 at "H" ? NO Check the line between IC2703 and IC3303 & IC2001(UCOM).
(Q2701,D2701 etc...)
YES
Do audio signals input to pins[1&2/L-ch, 3&4/R-ch] of P2701 ? NO P2701 terminal and the peripheral circuit (L/C filter) are checked.
YES
Check Speaker (right and left) and wire harness.