Code :

Code: 309
Description: Charge cleaning unit: Position error: C. The machine does not detect an "OFF" signal from the cleaning unit HP sensor for 3 seconds after the cleaning pad unit has moved to the rear side from its home position (front side). The machine does not detect an "ON" signal from the cleaning unit HP sensor for 18 seconds after the cleaning pad unit has returned to its home position (front side) from the rear side.
Causes: • Disconnected harnesses (charge cleaning HP sensor or charge cleaning motor) • Defective charge cleaning HP sensor • Defective charge cleaning motor
Remedy: 1. Check if the charge cleaning HP sensor is correctly set or the sensor bracket is not bent. 2. Check the harness connection of sensor and motor. 3. Replace the charge cleaning HP sensor. 4. Replace the charge cleaning motor.

Code: 310
Description: Charge cleaning unit: Position error: M. The machine does not detect an "OFF" signal from the cleaning unit HP sensor for 3 seconds after the cleaning pad unit has moved to the rear side from its home position (front side). The machine does not detect an "ON" signal from the cleaning unit HP sensor for 18 seconds after the cleaning pad unit has returned to its home position (front side) from the rear side.
Causes: • Disconnected harnesses (charge cleaning HP sensor or charge cleaning motor) • Defective charge cleaning HP sensor • Defective charge cleaning motor
Remedy: 1. Check if the charge cleaning HP sensor is correctly set or the sensor bracket is not bent. 2. Check the harness connection of sensor and motor. 3. Replace the charge cleaning HP sensor. 4. Replace the charge cleaning motor.

Code: 311
Description: Charge cleaning unit: Position error: Y. The machine does not detect an "OFF" signal from the cleaning unit HP sensor for 3 seconds after the cleaning pad unit has moved to the rear side from its home position (front side). The machine does not detect an "ON" signal from the cleaning unit HP sensor for 18 seconds after the cleaning pad unit has returned to its home position (front side) from the rear side.
Causes: • Disconnected harnesses (charge cleaning HP sensor or charge cleaning motor) • Defective charge cleaning HP sensor • Defective charge cleaning motor
Remedy: 1. Check if the charge cleaning HP sensor is correctly set or the sensor bracket is not bent. 2. Check the harness connection of sensor and motor. 3. Replace the charge cleaning HP sensor. 4. Replace the charge cleaning motor.

Code: 320
Description: Development bias: high voltage error: K. The high voltage error signal of the development unit is detected for 60 ms or more.
Causes: • Defective development HVPS
Remedy: 1. Check the harness connection of the development HVPS. 2. Replace the development HVPS. 3. Replace the development unit.

Code: 321
Description: Development bias: high voltage error: C. The high voltage error signal of the development unit is detected for 60 ms or more.
Causes: • Defective development HVPS
Remedy: 1. Check the harness connection of the development HVPS. 2. Replace the development HVPS. 3. Replace the development unit.

Code: 322
Description: Development bias: high voltage error: M. The high voltage error signal of the development unit is detected for 60 ms or more.
Causes: • Defective development HVPS
Remedy: 1. Check the harness connection of the development HVPS. 2. Replace the development HVPS. 3. Replace the development unit.

Code: 323
Description: Development bias: high voltage error: Y. The high voltage error signal of the development unit is detected for 60 ms or more.
Causes: • Defective development HVPS
Remedy: 1. Check the harness connection of the development HVPS. 2. Replace the development HVPS. 3. Replace the development unit.

Code: 324
Description: Development motor error: K. The lock signal remained HIGH or LOW for longer than the prescribed time for the K, M, C, or Y, development motor.
Causes: • Disconnected harness from the development motor • Development motor shaft locked, blocked by obstruction • +24V off • Development motor defective
Remedy: 1. Check if the developer in the development unit is stuck. 2. Check the development motor operation with Output Check (SP5-804-162 to -165) after the development unit has been pulled out from the machine. 3. Check the harness connection of the development motor. 4. Remove the obstruction around the development motor shaft. 5. Check if the +24V at the motor connector is ON. If not, check the following: • Check if 24V is output from the PSU-EB. • Check all harness connections on the PSU-EB. • Replace the PSU-EB. 6. Replace the development motor.