Oki C6100 Series User Manual page 74

If the printer has been powered on, the fuser is HOT.
This area is clearly labelled. Do not touch it.
2. Note the positions of the four cartridges: Cyan (1),
Magenta (2), Yellow (3), Black (4).
c53_09_lidup.jpg
3. Pull the colored toner release lever on the cartridge to be
replaced towards the front of the printer.
Shown: replacement of the black toner cartridge
c53_74_tonerlvropen.jpg
WARNING!
C6100 Series User's Guide
74