User`s guide
DocuMate 765 Scanner User’s Guide 107
Scanner Options, Maintenance and Troubleshooting
Scanner Error Codes
If an error occurs during scanning the LCD will display an error code and 
you can use the User Utility to troubleshoot and resolve the issue. The 
User Utility displays an error code and message in the Scanner Status 
field. The following table lists the codes, messages, possible causes and 
common resolutions. 
If you are unable to resolve the issue using the troubleshooting steps in 
this table, please refer to the section “Troubleshooting” on page 130.
Error 
Code Message Cause Resolution
U11 - U18 Paper Jam and Paper 
Remains in Scanner 
errors.
Paper has jammed 
while being fed through 
the scanner. 
Document sensors are 
dirty.
Open the ADF and exit doors and remove any 
paper stuck in the scanner. Please see 
page 127 for complete instructions.
If problem persists, clean the rollers and paper 
sensors as described in the section “Cleaning 
the Inside of the Scanner” on page 115.
U20 A skew error has 
occurred. 
A page was pulled into 
the scanner at an 
angle.
Open the ADF and exit doors and remove all 
paper from the scanner. Close the doors, 
place paper in scanner and retry scanning.
If problem persists, clean the rollers and paper 
sensors as described in the section “Cleaning 
the Inside of the Scanner” on page 115.
U23 A paper double feed 
has occurred.
Two pages have fed 
through the scanner at 
the same time.
Open the ADF and exit doors and remove all 
paper from the scanner. Close the doors, 
make sure pages are not stuck together, 
replace paper in scanner and retry scanning.
If problem persists, clean the rollers and paper 
sensors as described in the section “Cleaning 
the Inside of the Scanner” on page 115.
U30 - U34 Scanner door is open. Either the ADF door or 
exit door is not fully 
closed.
Close the ADF and exit doors fully until they 
are locked in place. Do not slam either door 
closed.
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.










