Description: Automatic SBU adjustment error
The white levels of the white plate and the white paper are extraordinarily different during the Scan Auto Adjustment (* SP4-428-001).
Causes: • Defective exposure lamp
• Unclean white plate
• Incorrect position or width of white plate scanning (* SP4-015)
• Defective BICU board
• Defective SBU board
Code: 193
Description: Image transfer error
Scanned images are not transferred to the controller memory within one minute.
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