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Troubleshooting
POWER button
ON
YES
Does the POWER
indicator light?
YES
Can the tray be
opened/closed with the
OPEN/CLOSE button?
YES
Can the SOURCE disc
drive read the
TOC of the CD?
YES
Can the REC/PLAY disc
drive play the CD?
YES
Is the audio output from
the CD in the REC/PLAY
disc drive?
YES
Can the data be written
in the REC/PLAY
disc drive?
YES
Check the general
operations.
Are the front keys and
indicators normal?
YES
OK
(For repairing the audio CD dubbing)
NO
NO
Are the pins
and
on the Front board short-circuited
NO
Go to the
"OPEN/CLOSE Operation".
NO
Go to the
"Reproduction Operation"
NO
NO
Go to the
"Audio Operation".
NO
Go to the
"Write Operation".
NO
Go to the "Front Key
/Indicator Operation".
Check the CN991 and S1034
on the Front board.
YES
Go to the "Power
of the CN991
Supply Operation".
XR-D400SL
1-9
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