Oki C9300 User Manual page 24

e. Gently push the colored lever toward the rear of the machine
until it stops. This releases the toner into the image drum.
CAUTION!
The lever should go back easily. If you meet any resistance,
stop and push down on the cartridge to be sure that it is
firmly in place before attempting to push the lever back.
2. Close the top cover.
C9300/C9500 Setting up • 24