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SERVICE CALL CONDITIONS
7.1.2 PRINTER ENGINE SC CODES
SC302: High voltage power supply error
Definition: [B]
A charge roller current leak signal is detected.
Possible causes
• Charge roller damaged
• Charge high voltage supply board defective
• Poor connection of the PCU
SC320: Polygon mirror motor error
Definition: [B]
The polygon mirror motor does not reach its operating speed within 10 seconds
after the polygon mirror motor on signal, or the lock signal is not detected for more
than 200 ms continuously during operation.
Possible causes
• Polygon mirror motor defective
• Poor connection between the polygon mirror motor driver and the engine board
• Engine board defective
SC321: No laser writing signal (F-GATE) error
Definition: [B]
The laser writing signal (F-GATE) is still not LOW when the laser writing area +5
mm has passed since the laser writing start position on the drum.
Possible Causes:
• Engine board defective
• Printer controller board defective
SC322: Laser synchronization error
Definition: [B]
The main scan synchronization detector board cannot detect the laser
synchronization signal for more than 500 ms.
Possible causes:
• Poor connection between the laser synchronization detector board and the
engine board
• Laser synchronization detector board out of position
• Laser synchronization detector board defective
• Engine board defective
• LD unit defective
7-2
1 October, 1999
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