Sharp Aquos LC-60C6600U, Service Manual

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LC-60/70LE660U,C6600U
6 – 12
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Does not sound.
No audio (1)
INPUT-4 No audio. INPUT-5 No audio.
Is INPUT-4 selected on the input select menu screen? Is INPUT-5 selected on the input select menu screen?
YES
NO
YES
NO
Refer to ":No external input video [INPUT-4]". Refer to ":No external input video [INPUT-5]".
Is the audio output selected for "Variable" on the menu screen? Is the audio output selected for "Variable" on the menu screen?
YES
NO
YES
NO
Set the audio output to "Fixed". Set the audio output to "Fixed".
Does the audio signal come from pins(7)(L) and (5)(R) of input termi-
nal(J502) to pins(6)(L) and (7)(R) of IC3301(CPU)? Does the audio signal come from pins(13)(L) and (11)(R) of input
terminal(J502) to pins(4)(L) and (5)(R) of IC3301(CPU)?
YES
NO
YES
NO
Check the line between J502 and IC3301. Check the line between J502 and IC3301.
Does the analog audio signal come from pins(11/12)(SP_L/SP_R) of IC3301(CPU) to pins(22/32)(SP_L/SP_R) of IC1701(Audio AMP)?
YES
NO
Check the audio line between IC3301 and IC1701, and their paripheral circuits.
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About the L/R Speakers.
Check the connector (P1701) L/R speakers and their peripheral circuits.