#Part
1 Lockable back restraint
2 Media end guide
3 Auto size finger actuator
4 Rear media tray guide
Media size sensing
The media size set for the media tray assembly is set by positioning the right media guide, unlocking the slider
lock, and sliding the rear paper guide. The rear paper guide triggers the movement of the auto size sensing
finger, which then sets the switches of the controller card board. The combination of on/o position of the three
switches provides information of the media sizes to the engine.
Pick arm
assembly
Sensor (media empty)
Sensor (media low)
Media size
actuator
Sensor
(pass through)
HCF drawer
assembly
Sensor
(tray raised HP)
Tray lift drive motor
Media size Switch 1 Switch 2 Switch 3
Unknown OFF OFF OFF
A4 OFF OFF ON
Legal OFF ON OFF
B5 OFF ON ON
A5 ON OFF OFF
Executive ON OFF ON
Letter ONONOFF
Custom ON ON ON
Note: Media size sensing through on/o switch combination
7462
Appendix C: Theory of operation
675
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