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Scanner Options, Maintenance and Troubleshooting
Xerox
®
DocuMate
®
4790
User’s Guide
9-173
Fxx System error occurred. An unknown system
error has occurred.
Reset the scanner and computer:
1. Turn off the scanner power.
2. Unplug the USB cable and power from the
scanner.
3. Reboot (restart) the computer.
4. Plug the USB cable and power cable back
into the scanner.
5. Turn the scanner back on.
If you are still unable to scan, contact Xerox
Technical Support. Please refer to the Technical
Support Card you received with the scanner for
contact information.
— **Warning**
The rollers need to be
cleaned.
The number next to
After Clean Roller:, in
the User Utility main
screen, has exceeded the
maximum number
between cleaning.
The rollers should be cleaned every 20,000
scans, or as needed if your scanner is
experiencing frequent paper feed issues. After
cleaning the rollers click on Clear Counter to
reset the cleaning roller count back to 0. Please
refer to
Cleaning the Inside of the Scanner
on page 178.
— **Warning**
The rollers need to be
replaced.
The number next to
After Replace Roller:, in
the User Utility main
screen, has exceeded the
maximum number
between replacement.
The rollers should be replaced every 400,000
scans, or as needed if cleaning the rollers does
not improve paper feeding issues. After
replacing the rollers click on Clear Counter to
reset the roller replacement count back to 0.
— **Warning**
Insufficient front light
error occurred.
Insufficient back light
error occurred.
Either the lamp is not
bright enough or the
scanning sensor is not
registering the light
strength.
Contact Xerox Technical Support or your
authorized service technician. Please refer to
the Technical Support Card you received with
the scanner for Xerox contact information.
— **Warning**
The front reference
plate is dirty.
The back reference
plate is dirty.
The front or back
scanning background
plate is dirty.
Clean the background reference plates as
described in the section
Cleaning the Inside
of the Scanner
on page 178.
— **Warning**
The scanner’s image
sensor cover is dirty
and requires routine
cleaning.
The image sensor cover
in the scanner is dirty.
Clean the image sensor as described in the
section
Cleaning the Inside of the Scanner
on page 178.
— **Warning**
Scanner is not
connected.
The power is off, the
power cord or USB cable
is unplugged.
Verify cables are securely plugged into the
scanner, computer and wall. If needed, reboot
the computer.
Error
Code Message Cause Resolution