Sharp LC-32LE440U, Service Manual

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21
CHAPTER 4.TROUBLESHOOTING TABLE
[1]TROUBLE SHOOTING TABLE
YES
NO
TEREMINAL
The sound is not emitted from the speaker though the picture has come out.
No sound output in all models?
Is the audio signal output of pin (96)
(AOSDATA0), pin (95) (AOBCK), pin (94)
(AOLRCK) and pin (93) (AOMCLK) of IC
U2102 normal?
NO
YES
NO
YES
NO
YES
Check IC U2102 and its peripheral circuits.
Is audio signal input to pin (6) (AOSDATA0),
pin (7) (AOBCLK), pin (8) (AOLRCK) and
pin (5) (AOMCLK) of IC U6101 (AMP)?
Check the line between IC U2102 and IC
U6101.
Is MUTE circuit [YDA_MUTE] normal ? Check the PD#. (R6130, Q6101, R6134, etc.)
Is the audio signal output of pin (1, 2) (L-ch)
and pin (3, 4) (R-ch) of CN6101
(AOUDIO-CONNECTOR) normal?
Check IC U6101 and its peripheral circuits.
Check Speaker Box (right and left) and wire
harness.
TEREMINAL