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MF 6990dn - Agoris C935
14 -
Troubleshooting
Troubleshooting print quality problems
The table and illustrations in this section exhaustively present print quality problems that may occur and the corrective
actions you can implement to solve them.
If the corrective action suggested does not solve the problem, contact a maintenance technician.
Symptom
Possible cause
Solution
Blank print
White spots on
the printed page
One or more toner cartridges are
defective.
Remove the toner cartridges and check their
condition.
Replace the defective toner cartridge(s).
The printer driver is not correctly
configured.
In the driver, select the Standard paper option
instead of Transparency.
The media used is damp.
Check the ambient humidity in the media storage
room.
Remove the loaded media and replace it with dry
media.
The type of media defined in the
printer driver does not
correspond with the media in the
paper tray.
Load the appropriate media into the paper tray.
Several sheets are fed at the
same time into the printer
Remove the sheets from the paper tray and check
they are not sticking together.
Fan sheets of paper (not transparencies), and
replace them in the paper tray.
The media is not correctly
inserted in the paper tray(s).
Remove the sheets from the paper tray and align
their front edges.
Replace them in the paper tray and adjust the guides
against the pile of paper.
Single-colour
printing
One or more toner cartridges are
defective.
Remove the toner cartridges and check their
condition.
Replace the defective toner cartridge(s).
Print media
creased
The media used is damp.
Remove the loaded media and replace it with dry
media.
The media used is not
compatible (format, thickness,
type, etc.).
Only use compatible media supports (see
Recommendations for the paper [
148]).
The transfer roller or fuser unit
may be defective.
Check the condition of the transfer roller or the fuser
unit.
If the transfer roller or fuser unit need to be replaced,
contact a maintenance technician.
