HP LaserJet Pro M201n - Page 24

DC controller operations
The DC controller controls the operational sequences of the product systems.
Figure 1-3 DC controller block diagram
Fuser
Transfer roller
Cartridge
Control panel
High-voltage
power supply
DC controller
Engine controller
Low-voltage
power supply
Motor
Fan
Solenoid
Photointerrupter
Switch
Laser scanner ass’y
Formatter
AC input
Table 1-2 DC controller controlled components
Component Designator Description
Motor M1 Main motor
M2 Scanner motor
Fan FM1 Main fan
Duplex models only.
Solenoid SL1 Pickup solenoid
SL2 Duplex reverse solenoid
NOTE: Duplex models only.
Switch SW501 Cartridge-door switch
Photointerrupter PS701 Fuser delivery sensor
PS702 Media-width sensor
8 Chapter 1 Theory of operation ENWW