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76 Functional information Q1860-90918
Laser and scanner drive
Based on information received from the formatter, the dc controller board sends signals to the
laser/scanner assembly to modulate the laser diode on and off and to drive the laser/scanner
motor. See Image-formation system on page 82 for more information.
Paper-motion monitoring and control
The dc controller board controls paper motion by continuously monitoring the various paper
sensors, and coordinating paper movement with the other print processes. For more information,
see Paper feed system on page 91.
Solenoids, sensors, clutches, and switches
See Dc controller inputs and outputs on page 252.
Engine test
See Engine test on page 190.
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