Oki c3530 User Manual page 85

If the printer has been powered on, the fuser may be
hot. This area is clearly labelled. Do not touch it.
3.
4.
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Note the positions of the 4 cartridges.
ID Positions.jpg
1. Cyan cartridge
3. Yellow cartridge
Carry out one of the following:
(a) If you are replacing a toner cartridge that has been
supplied with your printer (release lever has 3
positions), pull the colored toner release lever on the
cartridge to be replaced towards the front of the
WARNING!
2. Magenta cartridge
4. Black cartridge
C3530 MFP User's Guide
Maintenance > 85