Laser/scanner failure
The DC controller determines that a laser/scanner has failed when any of the following conditions occurs:
●
Laser failure: The detected laser intensity does not match a specified value when the product
initializes.
●
Scanner motor startup failure: The scanner motor does not reach a specified rotation within a
specified period from when the laser scanner starts driving.
●
Scanner-motor abnormal rotation: When a specified BD interval is not detected during a print
operation, a BD error is determined. If the BD interval does not recover within a specified period after
the BD error occurs, the product determines a scanner motor abnormal rotation.
The laser/scanner system does not have a mechanical laser shutter. For safety reason, the product has a
interlock switch. The interlock switch is turned off to interrupt +5 V power supply to the laser/scanner
system, when the front or right door is open.
24 Chapter 1 Theory of operation ENWW
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