3. Sensors
No.
Name
Description
17
Document Sensor
This detects the presence of a document in the feeder.
19
Scan Line Sensor
This detects when a page is approaching the auto
shading position.
20
Document Width Sensor
This detects when a B4 width [10.1"] document has
been placed in the feeder.
39
Toner End Sensor
This detects when the toner has run out.
40
Paper Size Detector
This detects the paper size installed in the cassette.
The user must install the correct actuator.
33
Paper End Sensor
This detects when the paper in the cassette has run out.
37
Registration Sensor
This detects when paper has reached the registration
roller.
31
Paper Feed-out Sensor
This detects when the paper has been fed out of the
printer.
32
Paper Exit Cover Switch
This detects whether the paper feed-out cover is open
or closed.
36
Bypass Feed Sensor
This detects when a sheet of paper has been inserted
into the bypass feed slot. Then the registration roller
feeds the paper a short distance into the machine to
prepare for printing, and stops.
21
ADF Cover Switch
This detects whether the ADF cover is open or closed.
28
Scanner Home Position
Sensor
This detects when the image sensor is at home position.
23
24
Paper Size Sensors
These detect the size of the paper which was placed
on the exposure glass.
25
Platen Cover Sensor
This detects whether the platen cover is open or closed.
22
ADF Switch
This detects whether the ADF unit is open or closed.
4. Interlock Switches
No.
Name
Description
27
30
Fusing Unit Cover
Interlock Switches
If the fusing unit cover and/or top cover are open, these
interlock switches interrupt the +5VLD power supply for
the laser diode and the +24VD power supply for the
power pack, motors, and other components.
OVERALL MACHINE INFORMATION
May 22nd, 1995
COMPONENT LAYOUT
1-10