Xerox DocuPrint C11 User Manual page 59

If there is still no improvement in the print quality, try
cleaning the print cartridge nozzles.
The following operation MUST NOT be repeated often,
as it will damage the print cartridge. It should be
attempted ONLY as a last resort, before changing the
print cartridge.
1 Dampen a lint-free cloth with clean water. Squeeze it to
remove any excess water.
2 Open the printer cover.
Position, release and remove the print cartridge
3
See "Removing and Replacing Print Cartridges"
(page 4-3), Step 1 to Step 4.
Chapter 4: Maintaining the Printer
Cleaning Print Cartridges
.
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