Service manual
Principles of Operation
Sensors
The printer mechanism contains the following sensors:
l
Paper end (PE) sensor
l
Home position (HP) sensor
l
Thermal sensor
Paper end sensor
The paper end sensor switch goes on when the paper runs out. One switch detects
when the paper is out for both the rear and bottom paper slots. Figure 2-3
illustrates the paper end sensor.
Paper out
--t
on
+
LOW level
Paper present
-+
off
+
HIGH level
Figure 2-3. Pap End Sensor
2-4
LQ-200/AP3000