Xerox Phaser 6120 Service Manual page 240

Toner Cartridge Rack Drive
The Toner Cartridge Rack is driven by the Rack Motor (M2).
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Rack Motor
Toner Cartridge Rack Stop Position
The Toner Cartridge Rack must be brought to a stop so that the Toner Cartridge of each
color of toner is located at its correct position. To accomplish this task, three stop positions
are established: the standby (reference) position, the developing position, and the cartridge
replacement position. For additional information regarding rack positioning, see
Cartridge Rack Stop Position Detection
The standby position refers to the position at which the Toner Cartridge Rack is stationary
when the machine is in the Ready state. The Toner Cartridge Rack is located at this
standby position when the machine completes a warm-up cycle or waits for a print
command.
The development position refers to the position at which the Toner Cartridge Rack stops
during development of a specific color of toner.
The cartridge replacement position refers to the position at which the Toner Cartridge
Rack is stopped for replacement of the Toner Cartridge of a specific color of toner.
Phaser® 6120 Color Laser Printer Service Manual
4139to2065e0
on page 7-23.
7-20
Print Engine Theory of Operation
Rack Motor
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Toner