Xerox 2135DT Service Guide - Page 25
Paper tray size sensing
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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 (top) SW2 0 0 0 0 0 0 0 0 0 1 0 1 0 1 0 1 1 0 1 0 1 0 1 0 1 1 1 1 1 1 1 1 SW3 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 SW4 (bottom) 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 Paper Size No tray installed B4 A4 (landscape) A3-Nobi Legal 13 in. Legal 14 in. A5 A6 B5 (landscape) A3 A/Letter (landscape) B/Tabloid B5 (portrait) Executive A4 (portrait) A/Letter (portrait) Paper tray sensor board Back of paper tray Tray switch sensors and actuators 12 Phaser 2135 Color Printer 0725-67
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