HP LaserJet Pro M402d

Engine-control system
The engine-control system receives commands from the formatter and interacts with the other main systems
to coordinate all printer functions. The engine-control system consists of the following components:
●
DC controller
●
Low-voltage power supply
●
High-voltage power supplies
●
Fuser power supply
Figure 1-2 Engine-control system
Formatter
Engine-control system
DC controller
Low-voltage power supply
Laser scanner system
Image-formation system
Pickup, feed, and delivery
system
Accessory
High-voltage power supplies
Fuser power supply
F
o
rm
a
tt
e
r
En
g
ine-control s
y
stem
D
C
controller
Low-volta
g
e power suppl
y
Laser scanner s
y
stem
Ima
g
e-
f
ormation s
y
stem
Pickup,
f
eed, and deliver
y
sy
stem
Accessor
y
H
i
g
h-volta
g
e power supplies
Fuser power suppl
y
ENWW Engine-control system 5