Confidential
3-5
3-5 Audio Troubleshooting
Audio
troubleshooting
Plug in signal cable
and play audio
signal
Have audio
sound output
from the internal
speaker?
Does the signal
and source work
well?
Ensure the signal
and source work
well
Not fault found.
Change main board.
END
NO
YES
NO
If the sound is
abnormal?
NO
YES
Change main board.
YES