Ricoh Aficio 551 Copy Reference Manual page 316

What to Do If Something Goes Wrong
To initialize the staple unit with the User Tools (System Settings)
A Press the {User Tools/Counter} key.
B Press the [System Settings] key.
C Press the [Staple initialization] key on the "Basic Page 2" menu.
D Press the [OK] key.
The machine staples a few times without ejecting staples.
E Press the [Exit] key and return to the User Tools Main Menu.
F Press the [Exit] key and return to Copy mode.
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