Xerox B205 User Manual page 212

Symptoms
Error message "Cannot open port device
file" displays when printing a document.
The printer does not appear on the
scanners list.
The printer does not scan.
Note: Refer to the Linux User Guide supplied with your computer for further information on Linux
error messages.
Solutions
Avoid changing print job parameters while a print job is in
progress. Known versions of CUPS server break the print job
whenever print options are changed and then try to restart the job
from the beginning. Since Unified Linux Driver locks the port while
printing, the abrupt termination of the driver keeps the port locked
and unavailable for subsequent Print jobs. If this situation occurs,
try to release the port by selecting Release port in Port
configuration window.
• Ensure your printer is attached to your computer, connected
properly via the USB port, and is turned on.
• Ensure the scanner driver for your printer is installed on your
system.
• Make sure that a driver with a name corresponding to your
printer's name is listed in the window.
• Ensure the port is not busy. Since functional components of the
printer (printer and scanner) share the same I/O interface
(port), simultaneous access of different "consumer"
applications to the same port is possible. To avoid possible
conflicts, only one of them at a time is allowed to gain control
over the printer. The other "consumer" will encounter "device
busy" response. This usually happens when starting a scan
procedure. An appropriate message box appears.
• To identify the source of the problem, open the Ports
configuration and select the port assigned to your scanner,
port's symbol /dev/mfp0 corresponds to LP:0 designation
displayed in the scanners' options, /dev/mfp1 relates to LP:1,
and so on. USB ports start at /dev/mfp4, so scanner on USB:0
relates to /dev/mfp4 respectively and so forth sequentially. In
the Selected port pane, you can see if the port is occupied by
another application. If this is the case, you should either wait
for completion of the current job or press the Release port
button.
Ensure a document is loaded into the printer, ensure your printer is
connected to the computer.
Xerox B205 Multifunction Printer
®
User Guide
Printing Problems
210