• Code: 503-01
• Description: 3rd tray (option) error (lift error) The tray lift sensor does not detect the tray bottom plate or stack of paper for 10 seconds after the machine start to initialize all units. * If the machine detects an error three times consecutively, this SC is issued.
• Causes: • Tray lift motor error or harness disconnected • Tray lift sensor error or harness disconnected • Each harness damaged • Main board defective • Foreign matter, such as paper scrap, is caught between the tray and tray lift motor. • Paper set fault • Tray bottom plate defective • Paper feed roller missing • Tray lift sensor feeler defective • Foreign matter, such as paper scrap, is caught in the tray.
• Remedy: • Reload the paper. • Remove the foreign matter. • Replace the tray lift motor. • Reconnect the connector. • Replace the harness. • Replace the tray lift sensor. • Replace the main board. • Replace the tray. • Replace the paper feed roller. • Replace the tray lift sensor feeler • Replace the tray bottom plate.

• Code: 503-02
• Description: 3rd tray (option) error (lowering error) The tray lift sensor does not turn off for 1,000 msec. after the tray bottom plate has started to lower when the upper limit and paper load are simultaneously detected at the power-on or tray installation. * If the machine detects an error five times consecutively, this SC is issued.
• Causes: • Tray lift motor error or harness disconnected • Tray lift sensor error or harness disconnected • Each harness damaged • Main board defective • Foreign matter, such as paper scrap, is caught between the tray and tray lift motor. • Paper set fault • Bottom plate defective • Paper feed roller missing • Tray lift sensor feeler defective • Foreign matter, such as paper scrap, is caught in the tray.
• Remedy: • Reload the paper. • Remove the foreign matter. • Replace the tray lift motor. • Reconnect the connector. • Replace the harness. • Replace the tray lift sensor. • Replace the main board. • Replace the tray. • Replace the paper feed roller. • Replace the tray lift sensor feeler • Replace the bottom plate.

• Code: 520-00
• Description: Main motor error "High" signal is detected continuously 20 times or more when the main motor is turned on. Detection cycle: 100 msec
• Causes: • Motor lock due to overload to the drive chain • Motor driver defective
• Remedy: • Replace the main motor.

• Code: 522-00
• Description: 2nd tray (option) transport motor error
• Causes: • Encoder defective An error is detected when phase A/phase B signals of the encoder are not input • Encoder phase pulse over An error is detected when the phase difference between phase A and phase B is shifted by more than the specified number of pulses. • Rotor restrained time over (overload) An error is detected when phase A/phase B signals of the encoder are not input within the predetermined time. • Transport motor error • Harness damaged • Harness not connected correctly • Main board defective
• Remedy: • Reconnect the harness. • Replace the harness. • Replace the main board. • Replace the transport motor.

• Code: 523-00
• Description: 3rd tray (option) transport motor error • Encoder defective An error is detected when phase A/phase B signals of the encoder are not input • Encoder phase pulse over An error is detected when the phase difference between phase A and phase B is shifted by more than the specified number of pulses. • Rotor restrained time over (overload) An error is detected when phase A/phase B signals of the encoder are not input within the predetermined time.
• Causes: • Transport motor error • Harness damaged • Harness not connected correctly • Main board defective
• Remedy: • Reconnect the harness. • Replace the harness. • Replace the main board. • Replace the transport motor.

• Code: 530-00
• Description: Main fan error A motor lock error is detected for 5 seconds or more when the main fan is turned on.
• Causes: Main fan motor defective
• Remedy: Replace the main fan.

• Code: 531-00
• Description: Exhaust fan error A motor lock error is detected for 5 seconds or more when the exhaust fan is turned on.
• Causes: Exhaust fan motor defective
• Remedy: Replace the exhaust fan.

• Code: 541-01
• Description: Thermistor (center) disconnection Temperature of 0°C or lower is detected for 7 seconds continuously.
• Causes: • Thermistor (center) disconnection • Thermistor (center) not connected correctly
• Remedy: • Reconnect the thermistor (center). • Replace the thermistor (center). • Clear this SC by executing SP5-810-001.