SC5xx: Main Motor Errors, Fusing Errors

501

D

Plate Action Error

The status of the bottom plate position sensor does not change even though 2 secs or more have lapsed after the bottom plate lift clutch is turned ON.

This SC is displayed if the error is detected 3 times.

• The bottom plate lift clutch is loose or defective.

• The bottom plate position sensor is loose or defective.

• Cycle the power OFF/ON.

• Replace the bottom plate lift clutch.

• Replace the bottom plate position sensor.

• Replace any harnesses connected to the bottom plate lift clutch or bottom plate position sensor.

520

D

Main Motor Error

• The machine failed to detect a lock signal within 550 ms after the main motor was turned on.

• The machine failed to detect a lock release signal with 2 sec. after the main motor was turned off.

• This SC is displayed if a lock signal cannot be detected for 8 consecutive times.

• The AIO is defective.

• The main motor is defective.

• Cycle the power OFF/ON.

• Check the areas around motor and main drive train for any physical obstruction such as paper scraps.

• Clean the main motor drive train.

• Replace the AIO.

• Replace the main motor.

530

D

Main Fan Motor Error

When the fan motor is ON, a lock signal is sampled every 100 ms. If an incorrect lock signal is detected 100 times (10 sec), the fan is not rotating properly.

• The fan is defective.

• The harness is loose, disconnected or defective.

• Cycle the power OFF/ON.

• Replace the fan.

• Check the harness.

541

A

Fuser Thermistor Error

No temperature was detected within 6 sec. after the machine was turned on (temperature was less than 0°C).

This SC is displayed if no temperature was detected 10 times or more.

• The fusing unit thermistor is disconnected, broken, or not set correctly.

• The fusing lamp is disconnected, broken, or not set correctly.

• The fusing unit is defective.

• Check the fusing unit thermistor.

• Check the fusing lamp.

• Replace the fusing unit.

• After solving the problem, the service technician must execute [FusingSCReset]. Otherwise, the machine will continue to issue this SC code and cannot be operated. (Executing Fusing SC Reset)

542

A

Fusing Reload Temperature Error

After starting up or during operation, the reload (operating) temperature cannot be reached.

• The fusing thermistor is deformed or out of position.

• The fusing lamp harness is loose, broken, or defective.

• The fusing unit is defective.

• The power voltage is not correct.

• Check the power voltage.

• Check the fusing unit thermistor.

• Check the fusing lamp.

• Replace the fusing unit.

• After solving the problem, the service technician must execute [FusingSCReset]. Otherwise, the machine will continue to issue this SC code and cannot be operated. (Executing Fusing SC Reset)

543

A

High Temperature Error (Software)

The temperature inside the fusing unit exceeded 235°C for more than 0.5 sec.

This SC is displayed if the error is detected 10 times or more.

However, the machine does not check for this error during low power mode, sleep mode, cover open, or when the fusing lamp relay is OFF due to malfunctions.

• The PSU is defective (triac has short-circuited).

• The main board is defective.

• Replace the main board.

• After solving the problem, the service technician must execute [FusingSCReset]. Otherwise, the machine will continue to issue this SC code and cannot be operated. (Executing Fusing SC Reset)

544

A

High Temperature Error (Hardware)

The machine checks the CPU port at 50 ms intervals.

This SC is displayed if the CPU port was detected to be LOW for 4 consecutive times.

• The PSU is defective (triac has short-circuited).

• The fusing unit is defective.

• The main board is defective.

• Replace the PSU.

• Replace the fusing unit.

• Replace the main board.

• After solving the problem, the service technician must execute [FusingSCReset]. Otherwise, the machine will continue to issue this SC code and cannot be operated. (Executing Fusing SC Reset)

545

A

Fuser Full Heater Error

The heating element of the fusing lamp remained at full power for more than 7 sec. (100 V) or 9 sec. (200 V) after the reload temperature was detected.

The machine checks for this error during standby, energy save, after reload, or when the fusing unit is not rotating.

• The thermistor is deformed or loose.

• The fusing lamp is damaged.

• The overheat prevention device is activated.

• Check the fusing thermistor.

• Check the fusing lamp.

• After solving the problem, the service technician must execute [FusingSCReset]. Otherwise, the machine will continue to issue this SC code and cannot be operated. (Executing Fusing SC Reset)

547

D

Motor Thermistor Error

After starting up, the temperature inside the machine is checked every 100ms. A temperature of -30°C is detected for 4 sec., or 105°C is detected for 1 sec.

• Cycle the power OFF/ON.

• Check the connection or replace the thermistor.

• Replace the I/F harness.

• Replace the main board.

559

A

Fusing Unit Third Jam Error

The exit sensor failed to detect the leading edge of the paper within the prescribed time and triggered a jam alert.

After this error has occurred three times, the machine will shut down automatically. It cannot be re-started until the machine has been serviced by a service technician.

• Check the paper transport path for any physical obstruction such as paper scraps.

• Make sure the fusing unit has been installed correctly.

• After solving the problem, the service technician must execute [FusingSCReset]. Otherwise, the machine will continue to issue this SC code and cannot be operated. (Executing Fusing SC Reset)

560

D

Low Voltage Fuser Reload Error

Reloading failed because of a voltage drop.

• Cycle the power OFF/ON.

• Ensure a stable power supply.