You can change the paper output orientation when the paper tray is selected automatically according to the settings in "43. Method to Auto Select Paper Tray".
Press the [User Tools / Counter] key.
Press [Printer Features].
Press [].
Press the [RPGL Menu] tab.
Press [Next] three times.
Press [103. Paper Orientation Priority].
Press [Portrait (Short Edge Feed)], and then press [OK].
Press [Exit].
Print the data from the computer.