PROBLEM DESCRIPTION: When the ImageWriter is turned on, the power light comes
on and the carriage moves to the left, but the select light doesn't come on.
The head may vibrate or "buzz" in the home position. Pushing the select button
has no effect. Closer inspection shows that the carriage cannot be moved as
far to the left as it should be.
CAUSE: The detector plate located below the front guide rail on the left side
of the ImageWriter is misaligned or malfunctioning.
CURE: Inspect the detector plate. If it is not straight, adjust it and clean
it. You will need a small Phillips screwdriver to do this. If the adjustment
does not help, remove the top cover of the ImageWriter and replace the sensor
assembly. If problem still not found, search on ImageWriter General
Troubleshooting.