• Code: 50.3
• Display: 50.X FUSER ERROR To continue turn off then on
• Description: A fuser error has occurred.
  high fuser temperature
• Remedy: 1. Turn the device off, and allow it to cool. 2. Verify that the correct model of fuser is installed. 3. Verify that the correct voltage fuser is installed. 4. Reinstall the fuser, and check the connection between the fuser and the high-voltage power supply. Replace the high-voltage power supply if the connector is damaged. 5. Replace the fuser. Replace the dc controller PCA. See DC controller PCA on page 357. 7. Replace the high-voltage power supply.

• Code: 50.4
• Display: 50.X FUSER ERROR To continue turn off then on
• Description: A fuser error has occurred.
  faulty fuser, power supply drive circuit
• Remedy: 1. Turn the device off, and allow it to cool. 2. Verify that the correct model of fuser is installed. 3. Verify that the correct voltage fuser is installed. 4. Reinstall the fuser, and check the connection between the fuser and the high-voltage power supply. Replace the high-voltage power supply if the connector is damaged. 5. Replace the fuser. Replace the dc controller PCA. See DC controller PCA on page 357. 7. Replace the high-voltage power supply.

• Code: 50.5
• Display: 50.X FUSER ERROR To continue turn off then on
• Description: A fuser error has occurred.
  the wrong fuser is installed or no fuser is installed
• Remedy: 1. Turn the device off, and allow it to cool. 2. Verify that the correct model of fuser is installed. 3. Verify that the correct voltage fuser is installed. 4. Reinstall the fuser, and check the connection between the fuser and the high-voltage power supply. Replace the high-voltage power supply if the connector is damaged. 5. Replace the fuser. Replace the dc controller PCA. See DC controller PCA on page 357. 7. Replace the high-voltage power supply.

• Code: 50.6
• Display: 50.X FUSER ERROR To continue turn off then on
• Description: A fuser error has occurred.
  open fuser, heating element broken
• Remedy: 1. Turn the device off, and allow it to cool. 2. Verify that the correct model of fuser is installed. 3. Verify that the correct voltage fuser is installed. 4. Reinstall the fuser, and check the connection between the fuser and the high-voltage power supply. Replace the high-voltage power supply if the connector is damaged. 5. Replace the fuser. Replace the dc controller PCA. See DC controller PCA on page 357. 7. Replace the high-voltage power supply.

• Code: 50.7
• Display: 50.X FUSER ERROR To continue turn off then on
• Description: A fuser error has occurred.
  fuser pressure release malfunction
• Remedy: 1. Turn the device off, and allow it to cool. 2. Verify that the correct model of fuser is installed. 3. Verify that the correct voltage fuser is installed. 4. Reinstall the fuser, and check the connection between the fuser and the high-voltage power supply. Replace the high-voltage power supply if the connector is damaged. 5. Replace the fuser. Replace the dc controller PCA. See DC controller PCA on page 357. 7. Replace the high-voltage power supply.

• Code: 50.8
• Display: 50.X FUSER ERROR To continue turn off then on
• Description: A fuser error has occurred.
  low fuser temperature
• Remedy: 1. Turn the device off, and allow it to cool. 2. Verify that the correct model of fuser is installed. 3. Verify that the correct voltage fuser is installed. 4. Reinstall the fuser, and check the connection between the fuser and the high-voltage power supply. Replace the high-voltage power supply if the connector is damaged. 5. Replace the fuser. Replace the dc controller PCA. See DC controller PCA on page 357. 7. Replace the high-voltage power supply.

• Code: 50.9
• Display: 50.X FUSER ERROR To continue turn off then on
• Description: A fuser error has occurred.
  high fuser temperature
• Remedy: 1. Turn the device off, and allow it to cool. 2. Verify that the correct model of fuser is installed. 3. Verify that the correct voltage fuser is installed. 4. Reinstall the fuser, and check the connection between the fuser and the high-voltage power supply. Replace the high-voltage power supply if the connector is damaged. 5. Replace the fuser. Replace the dc controller PCA. See DC controller PCA on page 357. 7. Replace the high-voltage power supply.

• Code: 51.10
• Display: 51.XY ERROR To continue turn off then on
• Description: A temporary printing error has occurred.beam detect error
• Remedy: 1. Turn the device off, and then turn the device on. 2. Reseat the connectors between the laser/scanner and the dc controller PCA (J801 and J321). 3. Make sure that the laser/scanner cartridge door interlock mechanism correctly functioning 4. Replace the laser/scanner assembly. 5. Replace the dc controller PCA.