• Code: SC391-00
• Description: High Voltage Power Source: Development : Output Error When the machine detects the error detection signal “L (abnormal)” 10 times for 200 ms consecutively by monitoring the error ditection signal every 20ms during output of the PWM signal used as an error detection target.
• Causes: Hardware error • Input / Output connector is disconnected. • Surface/air clearance insufficient (arc discharge) • Input / Output harness is short-circuited. • BCU error (signal error) • HVPS defective Load error • Grounding fault of charging output, short-circuit with other outputs • Surface/air clearance insufficient in charging output path (including distance from other outputs) • Unexpected deterioration of drum, and over current due to pinholes • Over current due to drum surface condensation • PCDU is not set properly.
• Remedy: • Cycle the main power off/on • Replace the harness between the BCU and HVPS. • Reconnect or replace the harness between the BCU and HVPS. • Reinstall or replace the development unit. • Check if the contact and separation movement of the transfer works correctly. • Replace the HVPS. • Replace the BCU.

• Code: SC396-01
• Description: Drum Motor Lock Lock signals are observed at 2 sec intervals during motor ON, and a High level is detected at least 20 times.
• Causes: • Motor defective • Connector disconnected • Harness broken • IOB defective • PCU torque increased
• Remedy: • Reconnect the connector. • Replace the harness of the drum/waste toner motor. • Replace the drum/waste toner motor. • Replace the PCU. • Replace the IOB.

• Code: SC440-00
• Description: High Voltage Power Source: Paper Transfer : Output Error The machine detects the error detection signal “L (unexpected)” 10 times for 200 msec consecutively when monitoring the error signal every 20 msec during outputting the PWM signal.
• Causes: Hardware error • Input / Output connector is disconnected. • Input / Output harness is short-circuited. • IOB error (signal error) • HVPS defective Load error • Transfer roller's impedance increases. • Transfer unit is not set properly.
• Remedy: • Cycle the main power off/on. • Reconnect or replace the harness of the HVPS (power pack). • Reconnect or replace the harness between the BCU and the HVPS. • Rset or replacee the transfer unit. • Check if the contact and separation movement of the transfer unit works correctly. • Replace the HVPS. • Replace the BCU.

• Code: SC452-00
• Description: Transfer Roller Contact Motor Error When the machine does not detect the high/low signal for a specified time after the transfer roller contact motor has been turned on.
• Causes: • Motor overload, Motor defective • Connector disconnected • Harness broken • Interlock mechanism is defective.
• Remedy: • Cycle the main power off/on • Check if the contact and separation movement of the transfer unit works correctly. • Replace the transfer roller contact motor. 6. Troubleshooting

• Code: SC460-00
• Description: High Voltage Power Source: Separation : Output Error The machine detects the error detection signal “L (unexpected)” 10 times for 200 msec consecutively when monitoring the error signal every 20 msec during outputting the PWM signal.
• Causes: Hardware error • Input / Output connector is disconnected. • Input / Output harness is short-circuited. • Transfer unit is not set properly. • IOB error (signal error) • HVPS defective Load error • Grounding fault of separation power output, short-circuit with other outputs • Surface/air clearance insufficient in separation power output path (including distance from other outputs)
• Remedy: • Cycle the main power off/on • Reconnect or replacethe harness of the HVPS (power pack). • Reconnect or replace the harness between the BCU to the HVPS. • Reset or replace the trausfer unit. • Check if the contact and separation movement of the transfer unit works correctly. • Replace the HVPS. • Replace the BCU.

• Code: SC497-00
• Description: Machine Temperature Detection Thermistor Error The output of the temperature sensor is out of the following range. • 0.56 V or less (90°C or more) • 3.0 V or more (-18°C or less)
• Causes: • Connector disconnected or broken • Temperature sensor defective
• Remedy: • Reconnect or replace the harness. • Replace the temperature sensor.

• Code: SC498-00
• Description: Temperature and Humidity Sensor Error (Main machine) The output of the temperature/humidity sensor is out of the following range. • 0.76 V or less/ 2.90 V or more (temperature sensor) • 2.4 V or more (humidity sensor)
• Causes: • Connector disconnected or broken • Temperature/Humidity sensor defective
• Remedy: • Reconnect or replace the harness. • Replace the temperature/humidity sensor.

• Code: SC501-01
• Description: 1st Tray Lift Error The machine detects the error of the 1st tray lift motor 3 times consecutively when the 1st tray is lifted.. (The message of resetting the tray is displayed when the machine detects the error consecutively 2 times or less.)
• Causes: • 1st tray limit sensor connector disconnection, malfunction or sensor's dirt. • 1st tray lift motor connector disconnection, malfunction • Foreign matter, such as paper scrap, is caught between the paper feed tray and the tray lift motor. • Paper set fault
• Remedy: • Reset the paper. • Remove the foreign matter. 1st tray limit sensor, 1st tray lift motor • Check the harness. • Reset the connector. • Replacement 1st paper feed unit, 1st tray • Replacement Paper transport IOB • Replacement