Laser scanner system
The laser scanner system forms latent images on the photosensitive drums according to the VIDEO signals
sent from the formatter.
The main components of the laser/scanner are the laser unit and the scanner motor unit. The DC controller
sends signals to the laser/scanner to control the functions of these components.
Figure 1-10 Laser/scanner system
DC controller
Formatter
Scanner mirror
Scanner motor unit
SCANNER MOTOR CONTROL signal
VIDEO signal
LASER CONTROL signal
BDI signal
Laser unit (Y/M)
Laser unit (C/Bk)
Connecting board
Photosensitive drum
Laser failure detection
The DC controller determines an optical unit failure and notifies the formatter, if the laser/scanner
encounters the following conditions:
ENWW Engine-control system 23
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