Phaser 6180 Color Laser Printer Service Manual 2-35
Theory of Operation
Main Drive
The Main Drive provides drive energy to the following components:
■ Main Motor
The Main Motor provides drive energy for the Black Drum, Transfer Unit, 
and Fuser.
■ Sub Motor
The Sub Motor provides drive energy for the Black Developer, Cyan, 
Magenta, and Yellow Drums.
■ Developer Motor
The Developer Motor provides drive energy for the Cyan, Magenta, and 
Yellow Developers.
■ Exit Clutch
The Exit Clutch transmits drive energy from the Main Motor to the Exit 
Roll in the Fuser. When Duplex mode is in use, the Exit Clutch stops. The 
Exit Roll is driven by the Duplex Motor.
■ Drive Assembly
The Drive Assembly provides drive energy for Tray 1 (MPT), Tray 2, and 
Registration. The Tray 2 Motor is part of the Drive Assembly.
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Refer to “Mechanical Components” on page 2-56 for detailed diagrams.
s6180-281
Main Drive
Exit Clutch
Main Motor
Sub Motor
Developer 
Motor
Tray 2 Motor
Drive Assembly