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
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