Apple has announced that replacement ROM chips will be available from service providers to fix two problems in the Personal LaserWriter NTR printer. Users who have experienced either problem are eligible for the upgrade; users who haven’t seen either problem probably don’t need it.
The first problem would be immediately apparent. If the Personal LaserWriter NTR is used in a network with routers that have checksum capability, the printer will not appear in the Chooser, and therefore can’t be selected. The second problem, perhaps less evident, is that the printer might occasionally print a blank sheet of paper immediately prior to a print job or immediately upon startup.
The upgrade kit consists of six ROM chips to replace chips in the printer, and is available from Apple service providers (such as most Apple dealers) free of charge through 15-Aug-94.
— Information from: