Xerox PHASER 6121MFP, Service Manual

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2-38 Phaser 6121MFP Service Manual
Theory of Operation
Transfer Roller Drive
The Transfer roller is driven through a set of intermediate gears by the Main Motor.
Image Transfer
To apply pressure to the Transfer Roller (sometimes referred to as the 2nd Transfer
Roller), the system follows these steps:
1. Drive from the Main Motor is transmitted to the drive gear.
2. Rotation of the drive gear is transmitted to the Transfer Roller Clutch.
3. When the 2nd Image Transfer Solenoid is energized, the Transfer Roller Clutch
rotates a half turn. This moves the Pressure Slider.
4. When the Pressure Slider is moved, the ribs push against the Pressure
Retraction Roller.
5. When the assembly is pushed up, the Transfer Roller presses against the
Transfer Belt.
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2nd Transfer Roller
Main Motor (M1)
Pressure/Retraction Clutch
2nd Transfer Assembly
Ribs
Pressure Slider
2nd Image Transfer Pressure/
Retraction Solenoid (SD4)
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