Oki ES9170 Quick Start Manual page 44

Chapter 3 MAINTENANCE
Stapler Unit of Inner Finisher (MJ-1032)
Open the front cover of the Finisher.
Holding the lever, move the finisher to the left
until it comes to a stop.
1
Open the Hole Punch Unit while pushing the
lever.
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1
2
1
2
2
Take off the staple cartridge.
Push the buttons of both side of the cartridge to
take off the staple case.
Install a new staple case.