26 July 2002 IMAGE FUSING AND PAPER EXIT
6-67
Detailed
Descriptions
Oil Supply
[A]: Oil end sensor
[B]: Oil overflow sensor
The oil end sensor [A] controls the supply of oil from the oil tank in the bottom of
the machine, via the oil pump, to the reservoir in the oil supply unit.
The oil end sensor detects oil by emitting a beam through the protruding part of the
tank bottom (the bottom is transparent).
When oil is detected, the pump does not supply oil up from the lower tank. So, the
reservoir is normally less than half full (maximum capacity: 70 grams).
When oil has been used up so that the level in the reservoir falls below the sensor,
the sensor detects oil end. Then, the oil pump turns on to pump oil up from the oil
tank, until the oil end sensor detects oil.
• If the oil end sensor fails, the oil overflow sensor [B] detects when the reservoir is
full [C], and the pump stops (SC571 will be generated, and the machine must be
repaired). This failsafe measure prevents oil flooding inside the machine.
B051D505.WMF
[B]
[A]
[C]
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