• Code: 306
• 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.
• Remedy:

• Code: 310
• Description: Potential sensor calibration error 1
  During drum potential sensor calibration, the drum potential sensor output voltage does not meet specification when test voltages (–100V, –800V) are applied to the drum.
• Causes: • Potential sensor defective • Potential sensor harness disconnected • Potential sensor connector defective or disconnected • IOB defective • OPC connector defective • Development power pack defective
• Remedy:

• Code: 311
• Description: Potential sensor calibration error 2
  During drum potential sensor calibration, the drum potential sensor output voltage does not meet specification when test voltages (–100V, –800V) are applied to the drum.
• Causes: • Potential sensor defective • Potential sensor harness disconnected • Potential sensor connector defective or disconnected • IOB defective • OPC connector defective • Development power pack defective
• Remedy:

• Code: 312
• Description: Potential sensor calibration error 3
  During drum potential sensor calibration when adjusting the drum potential (VD), the drum potential sensor detects VD higher than VG (grid voltage). -or- When adjusting VD (drum surface potential of black areas after exposure), even after 5 adjustments of VG (charge corona grid potential), VD could not be set in the target range (–800±10 + VL + 130V)
• Causes: • Potential sensor defective • Potential sensor harness disconnected • Potential sensor connector defective or disconnected • IOB defective • OPC connector defective • Development power pack defective • Charge corona unit worn out, dirty
• Remedy:

• Code: 314
• Description: Potential sensor calibration error 4
  During drum potential sensor calibration when adjusting the drum potential (VH) for LD power adjustment, the first time the VH pattern is made, the drum potential sensor detects that VH is more than 500V: VH > –500 + VL + 130 V
• Causes: • Potential sensor defective • Potential sensor harness disconnected • Potential sensor connector defective or disconnected • IOB defective • OPC connector defective • LD defective
• Remedy:

• Code: 315
• Description: Potential sensor calibration error 5
  During drum potential sensor calibration, when -100V is applied to the drum, the output value is out of the prescribed range.
• Causes: • Potential sensor defective • Potential sensor harness disconnected • Potential sensor connector defective or disconnected • IOB defective • OPC connector defective • Development power pack defective
• Remedy:

• Code: 316
• Description: Potential sensor calibration error 6
  During drum potential sensor calibration, when -800V is applied to the drum, the output value is out of the prescribed range.
• Causes: • Potential sensor defective • Potential sensor harness disconnected • Potential sensor connector defective or disconnected • IOB defective • OPC connector defective • Development power pack defective
• Remedy:

• Code: 317
• Description: Potential sensor calibration error 7
  During drum potential sensor calibration, when VL is adjusted, the pattern surface potential VL pattern is not within range 0V to -400V. (VL is the potential after exposing a white pattern.)
• Causes: • Potential sensor defective • Potential sensor harness disconnected • Potential sensor connector defective or disconnected • IOB defective • OPC connector defective • Charge corona power pack defective • Development power pack defective
• Remedy: