Xerox Phaser 6120

Print Engine Theory of Operation
Phaser® 6120 Color Laser Printer Service Manual
7-17
Developing Roller Drive
■ The Developing Roller is driven by the Developing Motor (M3) and Intermediate Gear.
■ When the Toner Cartridge Rack is stationery at the developing position, the Developing
Roller Drive Gear comes into mesh with the Intermediate Gear. The Developing Roller is
then rotated through the drive provided by the Developing Motor (M3) and Intermediate
Gear.
Developing Drive Control
[1] Developing Roller Drive Gear [3] Developing Motor (M3)
[2] Intermediate Gear
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[2]
[1]
[3]
Y
M
C
K
Y
K Toner
Developing
Position
Standby Position
Belt Positioning
Sensor Activated
Print Start
Developing Motor (M3)
Charge output bias
Polygon Motor Energized
Rack Motor (M2)
Main Motor (M1)
Developing bias DC
Developing bias AC
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