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Error Messages (cont.)
CHECK FUSER UNIT
320: FUSER UNIT MISSING
The Problem
The fuser is not properly installed.
What to Do
Open the top cover and check the
fuser:
1. Press down on the fuser to be sure
it is firmly locked in place. The
message should disappear.
Note: If the message still appears,
push the blue latches at
either end of the fuser back
(toward the printer cover
hinge) and lift the fuser out,
then lower it back into the
printer, pushing it firmly
down in place. You should
feel the latches at either end
engage.
2. Close the cover.
XXX TONER SENSOR ERROR
The Problem
Appears on the second line of the
display to indicate that there is a
problem with the color xxx toner
sensor.
What to Do
Turn the printer off, then on again. If
this does not clear the message, call
your local service dealer.
DISK FILE SYSTEM FULL
The Problem
The printer’s internal hard drive does
not have enough memory to print the
current job.
What to Do
Either print out or delete some of the
files already on the printer’s hard drive
(see pages 18 and 19).
Note: You can also use the OKI
Storage Device Manager utility
to clean up the printer’s hard
disk drive. See your on-line
User’s Guide for more
information.