Xerox Phaser 6120

Theory of Operation
Phaser® 6120 Color Laser Printer Service Manual
9-20
Theory of Operation
Duplex Unit
Key Name Function/System
[1] Duplex Unit Transport Roller 1 ■ Conveys paper in the Duplex Unit.
■ Driven by the Duplex Transport Motor.
[2] Duplex Registration Roller Starts feeding the paper from the Duplex Unit so that the
paper is correctly synchronized with the image on the
Transfer Belt.
[3] Duplex Unit Transport Roller 2
[4] Duplex Cooling Fan Motor (M10 DU) Cools the inside of the Duplex Unit.
[5] Duplex Reverse Motor (M9 DU)
■ Conveys the paper into the Duplex Unit.
■ Drives the Paper Exit Roller.
[6] Duolex Transport Motor (M8 DU) Conveys paper in the Duplex Unit.
[7] Duplex Door Sensor (PC11 DU) Determines whether the Duplex Door is open or closed.
[8] Duplex Registration Solenoid
(SL6 DU)
Controls drive of the Duplex Registration Roller.
[9] Duplex Paper Loop Sensor (PC10
DU)
Activated to allow a loop to be formed in the paper.
[10] Duplex Board (PWB-A DU) Controls drive of the Duplex Unit.
[11] Duplex Transport Sensor (PC12 DU) Detects paper conveyed into the Duplex Unit.
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