Drum home position
sensor
Drum encoder
sensor
Process gear
position sensor
Paper preheat
exit sensor
Paper preheat
entry sensor
Left maintenance
tray sensor
Front cover and
handfeed sensors
Figure 1-7 Left-side sensors and switches on the print engine
Sensors in the printer provide information to the main board to determine the
state of the printer. The printer monitors the positions of some of the movable
assemblies, such as the drum, as well as the temperature of many other
assemblies, such as the printhead, paper preheater and the drum.
Drum
temperature
sensor
Ink load door
sensor
Ink stick out
sensors
Ink stick low
sensors
General Information
9923-72
Service Manual
1-9
1