Paper Tray Size Sensing; Tray Switch Sensors And Actuators; Paper Size Detection - Xerox 2135N - Phaser Color Laser Printer Quick Reference Manual

Paper tray size sensing

The position of a multi-slotted plate, at the rear of the paper tray, is set according
to the position of the tray's paper guides. Upon insertion of the tray in the printer,
the plate's four rows of slots activate four switches. The combinations of the slot
positions indicate the size of the paper in the tray.

Paper size detection

State of Microswitch
SW1 SW2 SW3
(top)
0 0 0
0 0 0
0 0 1
0 0 1
0 1 0
0 1 0
0 1 1
0 1 1
1 0 0
1 0 0
1 0 1
1 0 1
1 1 0
1 1 0
1 1 1
1 1 1
Back of paper tray

Tray switch sensors and actuators

12 Phaser 2135 Color Printer
Paper Size
SW4
(bottom)
0 No tray installed
1 B4
0 A4 (landscape)
1 A3-Nobi
0 Legal 13 in.
1 Legal 14 in.
0 A5
1 A6
0 B5 (landscape)
1 A3
0 A/Letter (landscape)
1 B/Tabloid
0 B5 (portrait)
1 Executive
0 A4 (portrait)
1 A/Letter (portrait)
Paper tray
sensor board
0725-67