Xerox 2135DX - Phaser Color Laser Printer, Service Manual

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12 Phaser 2135 Color Printer
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 Paper Size
SW1
(top) SW2 SW3 SW4
(bottom)
0 0 0 0 No tray installed
0 0 0 1 B4
0 0 1 0 A4 (landscape)
0 0 1 1 A3-Nobi
0 1 0 0 Legal 13 in.
0 1 0 1 Legal 14 in.
0 1 1 0 A5
0 1 1 1 A6
1 0 0 0 B5 (landscape)
1 0 0 1 A3
1 0 1 0 A/Letter (landscape)
1 0 1 1 B/Tabloid
1 1 0 0 B5 (portrait)
1 1 0 1 Executive
1 1 1 0 A4 (portrait)
1 1 1 1 A/Letter (portrait)
Tray switch sensors and actuators
0725-67
Back of paper tray
Paper tray
sensor board