Laser Scanner Failure Detection; Laser Scanner Safety Function - HP LaserJet Enterprise 700 M712 series Handbuch Zur Fehlerbehebung

Laser scanner failure detection

The DC controller determines a laser scanner failure and notifies the formatter of the error state when
any of the following conditions occurs:
BD failure
●
A specified BD interval is not detected within a specified period during the scanner motor drive.
Scanner motor start-up failure
●
The scanner motor does not reach a specified rotation within a specified period from when the
laser scanner starts driving.
Laser failure
●
A specified laser intensity is not detected.

Laser scanner safety function

The laser scanner has a mechanical shutter. For user and service technician safety, the laser shutter
interrupts optical path of the laser scanner when the cartridge door is open.
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Laser scanner system
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