Combination Sensors And Their Meanings; Media Tray Type Sensing; Table 1-1 Tray Switch Sensor Combinations - Tektronix Phaser 340 Service Manual

Combination sensors and their meanings

Media tray type sensing

Combinations of sensors are used by the printer to determine the type of
standard media tray installed in the printer.
The combinations of the three tray sensors "tell" the print engine what type of
standard media tray is installed. (The print engine does not detect the type of
media installed in the tray; it only detects the particular tray being used.) The
tray sensors are located on the right-side interior of the paper tray slot, mounted
on I/O board 2. There are four tray types:
Letter (A-size). This tray is sized for 8.5 x 11-inch (Olympic) paper.
Metric Letter (A4-size). This tray is used for 210 x 297 mm (Metric)
paper.
Transparency (A). This tray supports Olympic-size transparency film.
Transparency (A4). This tray supports Metric-size transparency
film.

Table 1-1 Tray switch sensor combinations

Tray type A Paper
Top switch Closed
Middle switch Open
Bottom switc h Open
A4 Paper A Transparency
Open Closed
Closed Open
Open Closed
General Information
A4 Transparency
Open
Closed
Closed
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