• Code: 201
• Description: Polygon motor error
  • The polygon motor starts operating or changes its speed. The lock signal is not detected within 5 seconds. • The polygon motor stops operating. The lock signal is still detected for 3 seconds. • The polygon motor is operating. The lock signal remains undetected for 0.5 seconds.
• Causes: • Defective polygon motor • Defective harness

• Code: 220
• Description: 1st beam synchronization error
  A polygon motor lock is detected; the LD door is closed; and the LD remains on. The LD error (1st beam synchronization error) continues for 0.5 seconds.
• Causes: • Disconnected synchronization detector board • Defective LD unit • Defective BICU

• Code: 221
• Description: 2nd beam synchronization error
  A polygon motor lock is detected; the LD door is closed; and the LD remains on. The LD error (2nd beam synchronization error) continues for 0.5 seconds.
• Causes: • Disconnected synchronization detector board • Defective LD unit • Defective BICU

• Code: 230
• Description: FGATE on error
  A transfer belt mark is detected. No FGATE on signal is detected within 1 second.
• Causes: • Defective BICU

• Code: 231
• Description: FGATE off error
  An FGATE assert signal is detected. The FGATE negate signal is not detected within 30 seconds.
• Causes: • Defective BICU

• Code: 241
• Description: LD error
  An LD error continues for 0.5 seconds. (After an LD error is detected, an LD error release is written to the GAVD chip during monitoring.)
• Causes: • Defective LD unit

• Code: 280
• Description: Image transfer belt mark detection error
  • An imaging process starts. No belt mark for the first color is detected within 5 seconds. • A color imaging process starts. A belt mark other than the one for the first color is not detected within 8 seconds after a former belt mark has been detected.
• Causes: • Defective BICU • Poor electrical connection between sensor and BICU

• Code: 282
• Description: GAVD communication error
  Data is transferred. The status register in the BICU does not get to the ready condition within 10 milliseconds.
• Causes: • Defective BICU