OKIDATA OKIPAGE 20, Руководство по обслуживанию

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When the stirring bar reaches the maximum
height, since there is no resistance provided by the toner on the
other side, it falls to the minimum height due to its own weight.
Because of this, the time interval during which it is in encounter with
the magnet of the sensor lever becomes long. By monitoring this
time interval, toner low can be detected.
When the toner low state is detected 2 times consecutively, Toner Low is established.
When the toner full state is detected 2 times consecutively, Toner Low is canceled.
When there is no change with the toner sensor for 2 cycles (2.77 sec. x 2) or more, then the Toner
Sensor Alarm is activated.
The toner sensor is not monitored while the drum motor is in a halt.
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