Ricoh AP610N Maintenance Manual page 22

Paper and Other Media
A
Take the seal off the paper wedge's under side.
B
Affix the paper wedge to the front side of the main unit's paper output
tray.
If you load a paper size that is not selected automatically
To load paper whose size cannot be selected automatically, set the paper size
on the control panel. Follow the procedure described below to set the paper size.
A
Press the {Menu} key.
The [Menu] screen appears on the display.
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