Macintosh 128K, 512K and Plus : Prints All "U"s to ImageWriter



PROBLEM DESCRIPTION: When the print to the ImageWriter is started by the
Macintosh in question, the ImageWriter prints all "U"s. The ImageWriter
performs the Self-Test OK and works fine with other Macintoshes and
computers. This problem occurs with all applications.

CAUSE: The Macintosh is confused.

CURE: Verify that the customer is using "Choose Printer version 1.5" or
greater. Previous versions had problems setting ports correctly. If
"Choose Printer" revision is OK, do the following:
1. Turn the Macintosh and printer off and on again and recheck for this
problem.
2. If the problem remains after step 1, clear Parameter RAM. You can do
this by disconnecting the battery inside the Macintosh for about 10
seconds to help the Macintosh forget its improper port configuration.
If the problem still is not cured, search on "Macintosh General
Troubleshooting".



Published Date: Feb 19, 2012