Konica Minolta SD-501 - Manual (Page 15)

Cleaning Conveyance Belt of Saddle Stitcher Tray (continued)
1-11
4.
Clean the bottom plate of the saddle stitcher tray.
Wipe the whole surface of the bottom plate with a soft cloth slightly
dampened with alcohol (cleaner).
5.
Return the tray stand to its original position, then return the saddle
stitcher tray.
Never return the saddle stitcher tray to its original position with the tray stand
opened.