Paper Size Sensing - Xerox 7300B - Phaser Color Laser Printer Service Manual

Paper 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 activate four switches on the paper size sensor board. The
combinations of the slot positions indicate to the paper size sensor board, the size of
the paper in the tray.
Paper Size Detection
State of Microswitch
SW1 SW2
(top)
0 0
1 1
1 0
1 0
0 0
1 1
0 0
0 1
0 1
0 0
1 1
1 0
1 0
1 1
0 1
0 1
1. Paper Size Sensor Board
2. Plate on the back of the Paper Tray
8-236
SW3 SW4
(bottom)
0 0
1 1
1 0
0 1
1 1
1 0
1 0
1 0
1 1
0 1
0 0
0 0
1 1
0 1
0 0
0 1
2
Phaser 7300 Color Printer Service Manual
Paper Size
No tray installed
A/Letter (portrait)
A/Letter (landscape)
A3
A3-Nobi
A4 (portrait)
A4 (landscape)
A5
A6
B4
B5 (portrait)
B5 (landscape)
B/Tabloid
Executive
Legal 13 in.
Legal 14 in.
1
S7300-12