Kyocera FS-1020D Operation Manual page 34

4
Click the button next to the pull-down menu on the right side of
the screen to display the available paper sizes. Select the paper size
you want to set. For paper sizes that can be fed from the printer, see
Chapter 4.
5
To set the paper size for the multi purpose tray, select and double
click Multi Purpose Tray and repeat the above procedure.
6
After you have selected a paper size, click the OK button to return to
the start-up screen. The new paper size is set for the paper source.
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Paper Size
Paper