DC controller
The DC controller controls the operation of the printer and its components. The DC controller starts the
printer operation when the printer power is turned on and the power supply sends DC voltage to the DC
controller. After the printer enters the standby period, the DC controller sends out various signals to operate
motors, solenoids, and other printer components based on the print command and image data that the host
computer sends.
Figure 1-3 DC controller
AC input
LED
Transfer roller
High-voltage
power supply
Fan
Cartridge
Sensor
Motor
Clutch
Solenoid
Switch
Photointerrupte
Formatter
Control panel
Input accessory
Laser scanner ass’y
Fuser
Low-voltage
power supply
DC controller
Switch
Switch
Clutch
Photointerrupter
Output accessory
6 Chapter 1 Theory of operation ENWW
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