Sharp AR-505 Operation Manual page 161

Specified Paper Tray Selection in Tandem Mode
In tandem copying, the paper tray in the sub copier will be selected
based on this program. In the default setting, this program is not set and
the paper tray of the same size as the paper tray selected in the main
copier will be selected. If this program is set, the paper tray of the same
position as the paper tray selected in the main copier will be selected.
KEY OPERATOR PROGRAMS
To select the paper tray of the same position for tandem
copying, press the check box of "SPECIFIED PAPER TRAY
SELECTION IN TANDEM MODE." to display a check mark in
the check box.
To select the paper tray of the same size for tandem copying,
press the check box of this program again to clear the check
mark in the check box.
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