2008-03-14
LC-19LE320, LC-22LE320, LC-26LE320, LC-32LE320, LC-37LE320, LC-42LE320
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The sound is not emitted from the speaker though the picture has come out.
No sound output in all modes?
TEREMINAL UNIT:
YES
YES
YES
YES
Is the audio signal output of pin (U36)(AR3), (V37)(AL3) of IC U401
normal?
NO
Check IC U401 and its peripheral circuits.
Is audio signal input to pin (4)(LINN), pin (11)(RINN) of IC U601
(AMP)?
NO
Check the line between IC U605 and IC U601.
Is MUTE circuit [ Shutdown, OFF_MUTE] normal?
Is the audio signal output of pin (3, 4) (L-ch) and pin (1, 2) (R-ch) of
CN601 (AOUDIO-CONNECTOR) normal?
NO
Check the Mute circuit. (Q601, Q602 etc.)
Check IC U601 and its peripheral circuits.
Check Speaker Box (right and left) and wire harness.
NO
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