1-32 Service Manual
4023-001
Toner Empty Detection
Three empty-toner conditions are detected: sub-hopper empty, toner
bottle near empty, and toner bottle empty.
Sub-Hopper Empty
The toner detection plate lead switch checks the toner level by
detecting the position of the toner detection plate.
The toner bottle supplies toner to the rotating mixing plate. The
rotating mixing plate spreads the toner evenly in the sub-hopper.
The toner pushes upward on the toner detection plate. The position
of the toner detection plate indicates the amount of toner in the sub-
hopper.
A toner empty status occurs when the toner detection plate lowers
enough for the lead switch to detect the plate. However, the lead
switch is not activated when the toner supply motor stops or the
bottle motor rotates. When the sub-hopper empty status occurs, the
bottle motor activates to supply toner to the sub-hopper from the
toner bottle.
.
1 Toner Detection Plate 3 Rotating Mixing Plate
2 Toner Detection Plate Read
Switch
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