Laser failure detection
The DC controller determines an optical unit failure and notifies the formatter if the laser/scanner
encounters the following conditions:
●
The scanner motor does not reach a specified rotation frequency within a specified period of the
scanner motor start up.
●
If the beam detect (BD) interval is not detected during a print operation, the DC controller reports a
BD error. If the BD interval does not recover within a specified period after the BD error occurs, the
DC controller reports a scanner motor abnormal rotation error.
24 Chapter 1 Theory of operation ENWW
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