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DC Controller System
The following systems and functions are controlled by the DC Controller
PCA:
• DC Power Distribution (+5V DC, +12V DC, +24V DC)
• Laser and Scanner Drive
• Paper Motion Monitoring and Control (photosensors and flags)
• Clutches (registration, tray pickup, and Tray 1 feed)
• Engine Test
• Motors (Main Drive, Scanner, and Fans)
Figure 5-2 shows the Low Voltage Power Supply and Distribution System.
Refer to the wiring diagrams at the end of Chapter 7 for detailed listings of
the DC Controller inputs and outputs.
Laser and Scanner Drive
Based on information received from the Formatter, the DC Controller sends
signals to the Laser/Scanner Assembly to modulate the laser diode ON and
OFF, and to drive the Laser/Scanner motor. Refer to “Image Formation
System” later in this chapter for more information.
Paper Motion Monitoring and Control
The DC Controller PCA controls paper motion by continuously monitoring
the various paper sensors, and coordinating paper movement with the other
print processes.
Clutches
The drive signals for the Registration Assembly Clutch (CL1), Paper Input
Unit Clutch (CL2), and the Tray 1 Feed Clutch, are provided by the DC
Controller PCA. The control signals for the clutches in the 2000-Sheet
Input Unit and Multi-Bin Mailbox/Mailbox With Stapler are provided by the
External Paper Handling PCA mounted on the Formatter Assembly.
5-10 Functional Overview