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: 303
Description: When the high voltage is output to the corona grid, feedback voltage exceeds the prescribed value 9 times.
Causes: • Charge corona power pack defective • Charge corona harness disconnected • Poor charge corona unit connection
Code: 304
Description: Charge grid circuit open When high voltage goes to the corona grid, feedback voltage is more than the set value 9 times. This feedback voltage is used to update PWM for output control.
Causes: • Charge corona unit defective or disconnected • Charge corona harness defective • Charge corona power pack is defective.
Code: 305
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
Description: Charge corona wire cleaner error 2 Charge coronal 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, connected
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: • IOB defective • OPC connector defective • Development power pack defective