• Code: 51.23
• Display: 51.XX Error
• Description: The product has experienced an internal error with a laser scanner.
  yellow
• Remedy: 1. Turn the product off and then on. 2. Verify that the connectors J61 and J62 on the DC controller PCA are correctly seated. Also verify that the connectors on the laser scanner are correctly seated. 3. If the problem remains, replace the laser scanner.

• Code: 54.15
• Display: 54.XX Error
• Description: The product has experienced an error with one of the print cartridge sensors.
  yellow
• Remedy: 1. Open the door to the cartridge tray and slide out the cartridge tray. 2. Inspect the white mechanism on the relevant cartridge. It is located on the right side of the cartridge. 3. Push the mechanism in and out slowly. A black flag will raise up as you push it. If it does not move smoothly, push repeatedly to try to clear any potential obstruction. 4. Push in the cartridge tray and close the door.

• Code: 54.16
• Display: 54.XX Error
• Description: The product has experienced an error with one of the print cartridge sensors.
  magenta
• Remedy: 1. Open the door to the cartridge tray and slide out the cartridge tray. 2. Inspect the white mechanism on the relevant cartridge. It is located on the right side of the cartridge. 3. Push the mechanism in and out slowly. A black flag will raise up as you push it. If it does not move smoothly, push repeatedly to try to clear any potential obstruction. 4. Push in the cartridge tray and close the door.

• Code: 54.17
• Display: 54.XX Error
• Description: The product has experienced an error with one of the print cartridge sensors.
  cyan
• Remedy: 1. Open the door to the cartridge tray and slide out the cartridge tray. 2. Inspect the white mechanism on the relevant cartridge. It is located on the right side of the cartridge. 3. Push the mechanism in and out slowly. A black flag will raise up as you push it. If it does not move smoothly, push repeatedly to try to clear any potential obstruction. 4. Push in the cartridge tray and close the door.

• Code: 54.18
• Display: 54.XX Error
• Description: The product has experienced an error with one of the print cartridge sensors.
  black
• Remedy: 1. Open the door to the cartridge tray and slide out the cartridge tray. 2. Inspect the white mechanism on the relevant cartridge. It is located on the right side of the cartridge. 3. Push the mechanism in and out slowly. A black flag will raise up as you push it. If it does not move smoothly, push repeatedly to try to clear any potential obstruction. 4. Push in the cartridge tray and close the door.

• Code: 55.0601
• Display: 55.X Error
• Description: DC controller NVRAM data error
• Remedy: 1. Turn the product off and on. If the problem remains, replace the DC controller PCA.

• Code: 55.0602
• Display: 55.X Error
• Description: DC controller NVRAM access error
• Remedy: 1. Turn the product off and on. If the problem remains, replace the DC controller PCA.

• Code: 55.1
• Display: 55.X Error
• Description: DC controller memory error
• Remedy: 1. Turn the product off and on. If the problem remains, replace the DC controller PCA.