Xerox DocuPrint N2125 Service Manual page 278

Network laser printer
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Figure 2 The Duplex Paper Path
Drive Flow
The Duplex Drive Assembly generates the mechanical energy needed to run the Duplex Unit
(Figure 3).
Figure 3 The Drive Flow of the Duplex Assembly
Function of Major Components (Figure 4)
Duplex Roll Assemblies (Rear, Middle, and Front) -
Transfers the paper through the Duplex Assembly.
Duplex Motor Assembly -
Generates the drive to the Duplex Assembly.
Gears -
General Procedures / Information
GP 3.10
Transmits the drive power generated by the Duplex Motor Assembly to the Duplex Roll Assem-
bly.
Synchronous Belt -
Transmits the drive power from the Middle Roll Assembly to the Front Roll Assembly.
Duplex Sensor Assembly -
Detects paper entering and leaving the Duplex Assembly.
Home Position Sensor -
Detects the position of the Face Up Tray.
Duplex PWB -
Receives the control signals for the Duplex Motor Assembly from the Print Engine Controller
PWB, and provides the phase signals to operate the Duplex Motor Assembly.
Transmits the detection signals of the Duplex Sensor Assembly and the Duplex Sensor to the
Print Engine Controller PWB.
Provides +24VDC and +3.3VDC for the Duplex Motor Assembly and Sensors.
Figure 4 The Major Components of the Duplex Assembly
Duplex Printing Methods
Single Sheet Batch Printing -
Involving a single sheet of paper. The first side of the page is printed, then the second side is
printed and the page is sent to the output tray.
02/2000
6-38
Initial Issue
DocuPrint N2125

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