HP LaserJet M1319 - Multifunction Printer - Page 63

Product base laser/scanner
The ECU sends signals to the laser/scanner assembly to modulate the laser-diode on and off modes
and to drive the laser/scanner motor.
Figure 5-3 Laser/scanner operation
VDO
/VDO
CNT0
CNT1
/BDI
/BD
/ACC
/DEC
Formatter
Laser driver PCB
Focusing lens
Scanner motor
Four-sided
mirror
Cylindrical lens
BD
sensor
Engine
controller
PCB
Photosensitive
drum
ENWW Product base functions 45