Ricoh Aficio 2090

• Code: SC301
• Description: Charge Corona Output Error 2 (Circuit Open)
  A low feedback voltage for the charge corona (less than 1.5 V) was detected from the CBG power pack 9 times for 60 ms.
• Causes: • Charge/bias/grid power pack defective • Poor charge corona unit connection • Charge corona unit connector defective

• Code: SC303
• Description: Charge Grid Output Error 1 (Grid Leakage)
  A high feedback voltage for the grid (more than 4.5 V) was detected from the CBG power pack 9 times consecutively for 60 ms.
• Causes: • Charge/bias/grid power pack defective • Poor charge corona unit connection • Charge corona unit connector defective

• Code: SC304
• Description: Charge Grid Output Error 2 (Grip Open)
  A low feedback voltage for the grid (less than 1.0 V) was detected from the CBG power pack 9 times for 60 ms.
• Causes: • Charge/bias/grid power pack defective • Poor charge corona unit connection • Charge corona unit connector defective

• Code: SC305
• Description: Charge Corona Wire Cleaner Error 1
  The charge corona wire cleaner does not return to its home position, and there is no stop signal 30 s after cleaning starts.
• Causes: • Charge corona wire cleaner lock defective • Charge corona wire cleaner motor defective • BCU defective

• Code: SC310
• Description: Drum Potential Sensor Error 1
  During drum potential sensor calibration, the output voltages from the drum potential sensor are not within specifications while .200V then .700V are applied to the drum. NOTE: After this SC is issued, the grid voltage changes to the value set with SP2001-001 (Charge Corona Bias Adjustment) and LD power changes to the value set with SP2103 (LD Power Adjustment).
• Causes: • Drum potential sensor defective • Poor connection between the drum potential sensor and the BCU • Drum potential sensor defective • IOB defective • Poor drum ground connection • CBG power pack defective

• Code: SC311
• Description: Drum Potential Sensor Error 2
  When calibrating the drum potential sensor during process control initialization, the rate of change of drum potential sensor output with voltage on the drum is out of specification. NOTE: After this SC is issued, the grid voltage changes to the value set with SP2001-001 (Charge Corona Bias Adjustment) and LD power changes to the value set with SP2103 (LD Power Adjustment).
• Causes: • Drum potential sensor defective • Poor connection between the drum potential sensor and the BCU • Drum potential sensor defective • IOB defective • Poor drum ground connection • CBG power pack defective