User manual

98.05.08.09.00
Color LaserWriter 12/600 PS Troubleshooting 2–31
Miscellaneous Issues
1 The front door opens too easily.
When you open and close the front door with the power on, the DC
controller assumes that you have opened the door to clear a jam, and
drives the cleaning brush to remove scattered toner. This causes a
delay. If you want to tighten the door so that you do not open it inad-
vertently, perform the “Front Door Latch Adjustment” procedure in the
Take Apart chapter.
2 High-voltage power plays an extra role.
The Color LaserWriter 12/600 PS is the first printer from Apple in
which high-voltage power plays a role in both paper handling and
image quality. Inadequate transfer of high-voltage power to the attrac-
tion roller, separation discharge assembly, or the transfer drum itself
can result in paper jams, while the cutting of high-voltage to imaging
rollers can result in blank pages. If you experience such a problem,
refer to the lower right corner of the wiring diagram in this chapter.
Note what cables are going to what locations, and make sure that all
connections and contacts are secure.
3 There is a loud grinding sound coming from the toner carousel.
This indicates blockage of the carousel. If the printer has not yet been
operational, the problem is likely to be in initial setup, probably in the
handling of the toner cartridges. See “Troubleshooting Checklist” for
information on locking the internal workings of the cartridge.
If the printer has been operational, and this problem arose suddenly,
place the printer into a validation state (see “Verifying Printer Opera-
tion” in this chapter). Examine the carousel manual rotary assembly
and the carousel interlock. Remove the toner release assembly, if you
need more space to clear blockage.
4 The paper intermittently jams at the separation claw or doesn’t come
off the transfer drum at all.
The problem might be environmental. Force the separation voltage on
(see “Density Control Panel” in Chapter 1), and see if the problem
improves. This setting will not persist after printer shutdown, so it will
need to be reentered.
5 Desktop printing software was not installed. What can I do to get it?
Desktop printing software requires System 7.1.1 (Finder 7.1.3) or later.
If you have System 7.1, then Print Monitor 7.1.2 has been installed. To
get desktop printing capability, install System 7.1.1 or later, and rein-
stall the Color LaserWriter 12/600 PS software.