PROBLEM DESCRIPTION: During Self Test (initiated by turning on printer while
pressing Form Feed) the ImageWriter 15 prints character sets only 8 inches wide
(it should print test 15 inches wide).
CAUSE: ImageWriter 15 may have the wrong motherboard installed.
CURE: Locate the position for IC 22. If there is a chip installed at that
position, then the PCB is for the ImageWriter 15. If not, then the PCB is for
the ImageWriter 8.