Oki MPS6150c User Manual page 68

colored lock lever back to open the toner slot and lock it
in place.
The lever should move easily.
If it does not, STOP!
Push down on the toner cartridge to be sure that it is
properly seated in the image drum. Press back on the lever
again.
To avoid toner spillage, DO NOT open the toner release lever
until the toner cartridge is firmly seated in the image drum.
c53_75_tonrlvrclose.jpg
IMPORTANT!
MPS6150c User's Guide
68