Canon iR4570 User Manual page 66

IMPORTANT
Use only the toner cartridges intended for use with this machine.
Do not replace toner cartridges until the message prompting you to do so appears.
Do not replace toner cartridges while the machine is in the process of printing.
NOTE
When the message <Toner is low. Replacement not yet needed.> appears, approximately 1,000 pages
can be printed.
If toner runs out during a print job, the remaining prints are made after you replace the toner cartridge.
2
1
Open the toner supply port cover.
2
Pull the lever up until it becomes vertical.
IMPORTANT
Make sure that the
the 'Unlock' position.
2-6
Replacing the Toner Cartridge
on the lever is aligned with the of