User Manual

● When this message is displayed, you cannot continue printing. <Canon Genuine Mode>(P. 594)
When Printouts are Poor in Quality
If your printouts begin to sho
w any of the following features, one of your toner cartridges is consumed. Replace the
nearly empty toner cartridge even if no message is displayed.
Procedure for Replacing the Toner
Cartridge(P
. 615)
Streaks Appear/Printing is
Uneven
Partially faded Uneven density White Spots Appear
Toner smudges and splatters appear Blank space of originals becomes grayish in printouts
Procedure for Replacing the Toner Cartridge
Follo
w the procedure below to replace the toner cartridge.
1
Open the front cover.
MF746Cdw / MF745Cdw / MF743Cdw / MF741Cdw
MF644Cdw / MF642Cdw / MF641Cw
Maintenance
615