Theory of Operation 2-7
Printer Controls
Paper Size Control
The paper size detection for Trays 2, 3, 4, and 5 is determined by three paper size 
switches located in each paper tray slot. The switch condition is set by moving the 
paper guide in the tray. This in turn sets the plastic “fingers” on the side of the paper 
tray to a specific position that activates the correct switch combination for the selected 
paper size.
Selective Control; Paper Pick
Unless changed in printer setup, the default tray is Tray 2. Trays in the optional  
1100-Sheet Feeder are identified as Tray 3 and Tray 4. The tray in the optional  
550-Sheet Feeder is identified as Tray 3. If both optional Feeders are installed, the 
550-Sheet Feeder tray is identified as Tray 3, and the trays of the 1100-Sheet Feeder 
are identified as Tray 4 and Tray 5.
Note
The Phaser 6300/6350 printer supports the installation of only one 550-Sheet 
Feeder. Attempting to install a second results in an unsupported configuration 
error.
Paper Size Switches Indicated as SW1, SW2, and SW3
Paper Size 
Paper Size Switch
SW1 SW2 SW3
LEGAL14" On On On
US FOLIO (LEGAL 13)" On On Off
EXECUTIVE On Off On
B5 On Off Off
A4  Off On On
A5 (for reference, supported in Tray 1(MPT) only) Off On Off
LETTER  Off Off On
No Tray Off Off Off