Lexmark X940E, Руководство по обслуживанию

Страница: 38 / 815

1-8
Service Manual
7510
Rear media guide
The rear media tray guide assembly can be adjusted to different media sizes by moving it to the front or rear. The
rear guide come into contact with the media and hold it in position.
End guide
The media tray assembly is designed so it can adapt to the media length in the media feed direction by moving the
end guide to the left or right.
Bottom plate
The force pushing up the bottom plate is transmitted by the driving force of the motor on the media feed unit
assembly. The bottom plate is pushed up by the rotation of the lift up shaft, which causes the supplied media to
come in contact with the pick roll.
Media tray assembly
Detection of media size
The media size set for the media tray assembly is transmitted to the switch (media size) by moving these guides.
The media size is detected by the on/off information of these switches.
Media feed unit assembly
Since tray 1 and tray 2 are functionally equivalent in terms of the switch (media size), sensor (media out),
sensor (media level) and sensor (pre-feed), only the components of one tray are described here.
The media feed unit assembly is a mechanical unit supplying media from the media tray assembly to the printer.
The driving force, from the media feed lift motor on the media feed unit assembly, is transmitted to the three media
feed rolls to feed media.
When the pick roll picks up media, the remaining media decreases, and the actuator of the sensor (media level)
lowers accordingly. When the sensor (media level) detects the lowering, the media feed lift motor is activated to lift
the lift up shaft and the bottom plate accordingly. Thus, the remaining media is ready to be fed.
Rear media guide
Bottom plate
End guide