Canon imagePRESS C1+ Reference Manual page 484

11
12
7
13
7-50
Replacing the Toner Cartridge/Waste Toner Container
Turn the knob of the inserted toner cartridge in the direction of the
arrow (counterclockwise) to lock it.
Close the toner replacement cover.
CAUTION
When closing the front cover of the main unit, be careful not to get your fingers caught,
as this may result in personal injury.
Close the protection pack with the used toner cartridge in it the way it
was before the new toner cartridge was removed.