• Code: 198
• Description: Memory address error
  The BICU does not receive the memory address report from the controller within one minute.
• Causes: • Inconsistency between the BICU firmware and the controller firmware
  • Defective BICU
  • Defective controller

• Code: 302
• Description: Charge roller current leak
  The polling module detects a current leak of the charge roller.
• Causes: • Defective charge roller
  • Defective high voltage supply board
  • Loose connection of the PCU

• Code: 320
• Description: Polygonal mirror motor error
  The polygon mirror motor does not reach the operating speed within 10 seconds. Or, the polygon mirror motor remains out of the operating speed for 0.2 second after reaching the operating speed.
• Causes: • Defective polygon mirror motor
  • Loose connection between the polygonal mirror motor and the BICU
  • Defective cable between the BICU and the polygon mirror motor
  • Defective BICU

• Code: 321
• Description: No laser writing signal (F-GATE) error
  The poling module does not detect the laser writing signal (F-GATE) asserting after the laser crosses 5 mm from the start point on the drum surface.
• Causes: • Defective BICU
  • Loose connection on the fax controller or the printer controller
  • Defective fax controller or printer controller

• Code: 322
• Description: Laser synchronization error
  The main scan synchronization detector does not detect the laser signal for 0.5 second.
• Causes: • Toner bottle not installed
  • Loose connection between the LD unit and the BICU
  • Defective cable between the BICU and LD unit
  • LD unit out of position
  • Defective LD unit
  • Defective BICU

• Code: 390
• Description: TD sensor error
  The BICU detects the TD sensor outputting extraordinary voltage (less than 0.2 V or more than 4.0 V) 10 times consecutively.
• Causes: • Defective TD sensor
  • Loose connection of the PCU

• Code: 391
• Description: Development bias leak
  The polling module detects a current leak of the development bias.
• Causes: • Loose connection of the PCU
  • Defective high voltage supply board

• Code: 392
• Description: Developer initialization error
  The ID sensor does not detect a correct pattern during developer initialization (* 2-214-001).
• Causes: • Defective ID sensor
  • Insufficient developer
  • Defective drum operation
  • Defective development roller operation
  • Loose connection of the PCU
  • Insufficient voltage for the charge roller