Kyocera Mita Ecosys FS-1800+ Operation Manual page 270

11
Normally, select Auto Source Selection. Then, the paper will be fed
from the paper feeder in which the paper with the selected Paper
Size (step 8) is installed.
12
Select the desired media in the Media Type drop down list. Paper will
be fed from the paper feeder to which the selected Media Type is set.
Printing through Application Software
3-5