• Code: 221
• Description: Laser Synchronization Detector Error: K Leading Edge (Not LD0) While the polygon motor is rotating normally, no synchronizing detection signal is output for black, leading edge for any LD other than LD0.
• Causes: • Harness between the laser synchronizing detector and I/F unit is disconnected, defective • Check all connections between LD unit, LDB, IPU • LD unit • LDB defective • IPU defective

• Code: 230
• Description: FGATE ON error: K The PFGATE ON signal does not assert within 5 seconds after processing the image in normal job or MUSIC for start position [K].
• Causes: • Defective ASIC • Poor connection between controller and BICU. • Defective BICU

• Code: 231
• Description: FGATE OFF error: K • The PFGATE ON signal still asserts within 5 seconds after processing the image in normal job or MUSIC for end position [K]. • The PFGATE ON signal still asserts when the next job starts.
• Causes: See SC 230 for troubleshooting details.

• Code: 240
• Description: LD error: K The BICU detects LDB error a few times consecutively when LDB unit turns on after LDB initialization.
• Causes: • Worn-out LD • Disconnected or broken harness of the LD

• Code: 270
• Description: GAVD communication error A problem occurred in the GAVD or eSOC.
• Causes: - Check connection points on the BCU, IPU for loose, broken, or defective harness or connector - IPU defective -BCU defective - LDU effective

• Code: 300
• Description: Charge corona output error The feedback voltage from the charge corona unit is detected too high 9 times.
• Causes: • Charge corona power pack defective • Charge corona harness disconnected • Poor charge corona unit connection

• Code: 305-00
• Description: Charge corona wire cleaner error 1 The charge cleaner pad does not arrive at the home position: Motor locked within 4 s after switching on, or does not lock within 30 s. Motor locked within 10 s after reversing, or does not lock within 30 s.
• Causes: • Charge corona wire cleaner motor defective • Motor driver defective

• Code: 306-00
• Description: Charge corona wire cleaner error 2 Charge corona motor is disconnected. (The current at the charge corona motor is detected less than 83 mA.)
• Causes: • Charge corona wire cleaner motor connector is defective or disconnected.