LC-19LE430E/UK, LC-22LE430E/UK, LC-26LE430E/UK, LC-32LE430E/UK
50
[2] MAIN BOARD TROUBLESHOOTING TABLE
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 IC U401 (I2S bus) normal?
NO
Check IC U401 and its peripheral circuits.
Is audio signal input to pin (15/20/21/22)(I2S bus) of IC U602
(AMP)?
NO
Check the lI2S bus trace between U602 and U401
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. (Q603, Q652, Q653 etc.)
Check IC U602 and its peripheral circuits.
Check Speaker Box (right and left) and wire harness.
NO
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