The machine automatically controls the dc bias, if automatic process control is enabled. However, if process
control is turned off, (that is, if SP3-501-001 is set to 1), the dc bias is the value stored in SP2212-001 to
–009 (do not adjust in the field unless told to do this).
Toner Supply Mechanism
Overview
This machine uses four toner bottles [A]. Each bottle has a spiral groove [B] in it. The toner supply motor
[F] turns the toner bottle (each bottle has a separate motor).
When the toner supply drive-mechanism starts, the toner bottles turn and the groove moves toner to the
mouth of the bottle. Here, toner spills into a hopper [C]. Mylar blades turn and move the toner to an opening
in the side of the hopper and the toner falls into the development unit [D]. The quantity of toner that is added
is controlled by the length of time that the toner supply mechanism turns.
Toner Near End Detection:
Toner end sensors [E] detect toner end conditions (* Toner near end/toner end detection).
Toner Bottle Detection:
Each toner bottle is detected by connection to the ID chip connector [G].
6. Detailed Function Descriptions
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