This figure shows a Finisher FS-535 with Saddle Stitcher SD-512 and Punch Kit PK-521 installed.
Do not remove staples that remain in the machine. Otherwise, the stapling function will activate but no sheets will be stapled.
When moving the Saddle Stitcher, be sure to only hold the handle. Otherwise, your hand or finger may get caught in the machine.
Be sure to replace the Staple Cartridge after the relevant message has appeared. If a Staple Cartridge is removed before the relevant message appears, it may result in a failure.