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Error Messages (cont.)
CHECK FUSER UNIT
320: FUSER UNIT MISSING
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.
DISK FILE SYSTEM FULL
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 20 and 21).
Note:You can also use the Storage
Device Manager utility to clean up the
printer’s hard disk drive. See your
on-line User’s Guide for more
information.
PRESS ONLINE SW
INVALID DATA
The hard disk drive is not available
and job spooling cannot take place.
What to Do
Press the ON LINE button.