G144
Ricoh Europe B.V.
Technical Training Centre
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47
Slide 47
Sensors
Paper empty sensor
The machine flashes the red ERROR LED when the paper
feed unit is empty.
By-pass tray sensor
The CPU monitors this sensor to detect if paper is in the by-
pass tray.
Paper feed sensor
Paper gets detected by the photo interrupter when it passes
the actuator on the feed sensor.
Paper exit sensor
The exit sensor on the engine board, and actuator on the
frame detect when paper exits from the machine.
Cover open sensor
Located on the power supply board and is operated by a
molded tab on the front cover.
5. Engine
Service Manual, Section 6.4.4
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