When the Finisher FS-532 is mounted with Saddle Stitcher SD-510 and the stapler in the saddle unit becomes empty, the following message will appear in the message area of the screen.
[Pull out staple finisher saddle unit / then, set staples in stapler]
The Staple Cartridge indicator lights in red in the [Consumable and Scrap Indicators] area of the [MACHINE] screen.
Be sure to supply the designated stapler with staples.
Display the help message on the [MACHINE] screen, and then press [Consumable/Scrap].
Press the [Add Stapler] tab in the help message area.
Perform the process while using [][] to follow the steps.
For details about the help message, refer to Displaying Help Message.