• Code: 50.6
• Display: 50.X FUSER ERROR To continue turn off then on
• Description: A fuser error has occurred.
  Open fuser circuit
• Remedy: 1. Turn the device off, and then turn the device on. 2. If the message persists, turn off the device to allow the fuser to cool. 3. Verify that the correct model fuser is installed in the device. 4. Check the cable connections between the ECU and the fuser. 5. If, after checking the cables, the message persists, replace the fuser. 6. If, after replacing the fuser, the message persists, replace the ECU. 7. If, after replacing the ECU, the message persists, replace the high-voltage power-supply

• Code: 51.XY
• Display: 51.XY ERROR To continue turn off then on
• Description: A temporary printing error has occurred.
• Remedy: 1. Turn the device off, and then turn the device on. 2. Check the cable connections between the laser/scanner and the ECU. 3. If, after checking the cables, the message persists, replace the laser/ scanner. 4. If, after replacing the laser/scanner, the message persists, replace the ECU

• Code: 52.00
• Display: 52.00 ERROR
• Description: A laser/scanner motor error has occurred. Laser/scanner motor rotation is verified at the initialization of a print job.
• Remedy: 1. Verify that the laser/scanner motor connector and the ribbon cable from the ECU are firmly seated on the laser/ scanner assembly. 2. Verify that the laser/scanner motor connector is firmly seated in connector J402 on the ECU. You might have to remove the main cooling fan to see this connection. 3. Verify that the ribbon cable installed in connector J403 on the ECU is fully seated. You must remove the ECU in order to verify this connection. 4. If, after checking the cables, the message persists, replace the laser/ scanner. 5. If, after replacing the laser/scanner, the message persists, replace the ECU.

• Code: 53.XY
• Display: 53.XY.ZZ CHECK RAM DIMM SLOT <X> To continue turn off then on
• Description: A problem exists with the device memory. The DIMM that caused the error will not be used.
  X description: 0 onboard memory 1 slot 1
• Remedy: You might need to reinstall or replace the specified DIMM. 1. Turn the device off, and then replace the DIMM that caused the error. 2. If, after replacing the DIMM, the message persists, replace the formatter.

• Code: 54.XX
• Display: 54.XX ERROR To continue turn off then on
• Description: A temporary printing error has occurred.
• Remedy: 1. Turn the device off, and then turn the device on. 2. If the message persists, check the sensors in the device to make sure that they are working correctly. 3. If the sensors are working correctly, but the message persists, replace the ECU

• Code: 55.05
• Display: 55.05 ERROR To continue turn off then on
• Description: The print engine is not communicating with the formatter. An error occurred while performing a remote firmware upgrade.
• Remedy: 1. Turn the device off, and then turn the device on. 2. Try again to perform the remote firmware upgrade.

• Code: 55.XX.YY
• Display: 55.XX.YY DC CONTROLLER ERROR To continue turn off then on
• Description: The print engine is not communicating with the formatter.
• Remedy: 1. Turn the device off, and then turn the device on. 2. If the message persists, replace the ECU. 3. If, after replacing the ECU, the message persists, replace the high-voltage power-supply.

• Code: 56.XX
• Display: 56.XX ERROR To continue turn off then on
• Description: A temporary printing error has occurred.
• Remedy: 1. Turn the device off, and then turn the device on. 2. If this message persists, uninstall and then reinstall all input trays, and then turn the device off. 3. Turn the device on. If the message persists, replace the formatter