HP LaserJet Pro P1102 HP LaserJet Professional P1100 Series Printer - Service - Page 38
Laser failure detection, motor drive.
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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 within a specified period of the scanner motor start up. ● The rotation of the scanner motor is out of specified range for a specified period during the scanner motor drive. ● The BD interval is out of a specified value during a print operation. 20 Chapter 1 Theory of operation ENWW
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 within a specified period of the scanner
motor start up.
●
The rotation of the scanner motor is out of specified range for a specified period during the scanner
motor drive.
●
The BD interval is out of a specified value during a print operation.
20
Chapter 1
Theory of operation
ENWW