Xerox DocuPrint C621, User Manual, Page: 121 / 200

Troubleshooting
4
105
4.7 When An Error Message Appears
Message Meaning and Solution
Open the lower left and the
right covers to remove
jammed paper
Close the lower left unit
Remove paper from the
face-down tray
Replace black toner
cartridge
Install black toner cartridge
Invalid print command.
Press
Set .
Paper jammed inside the printer during two-sided
printing.
Remedy
Open the lower left and the right covers and
check if any paper is jammed inside the printer.
"5.1 Clearing Paper Jams"
The lower left unit is open.
Solution
Push the lower left unit firmly into the printer.
The quantity of paper output has exceeded the capacity
of the face-down tray.
Solution
Remove the paper from the face-down tray.
The black toner cartridge has run out.
Solution
Replace the black toner cartridge.
"6.1.2 Replacing the Toner
Cartridges"
The black toner cartridge is not installed or is not
installed correctly.
Solution
Push the black cartridge firmly into the printer.
"6.1.2 Replacing the Toner
Cartridges"
Unable to print with the settings specified on the
computer.
Solution
Press Set/Eject to cancel the printing. Check the
printer settings on the printer driver and try again.
Lower left unit