• Code: 54.00.03
• Display: 54.XX.YY Error
• Description: A sensor error has occurred
  Environmental sensor failure
• Remedy: 1. Turn the product off, and then on. 2. If the error persists, replace the environment sensor assembly. 3. If the environment sensor has been removed or replaced check the connector (J2) on the environment sensor and the connector (J108) on the DC controller PCA.

• Code: 54.00.06
• Display: 54.XX.YY Error
• Description: A sensor error has occurred
  Registration density sensor failure
• Remedy: 1. Open and close the right door (or turn on and then off the power switch) to perform the color plane registration. 2. If the error persists, replace the registration density sensor assembly.

• Code: 54.00.14
• Display: 54.XX.YY Error
• Description: A sensor error has occurred
  Registration density sensor failure
• Remedy: 1. Open and close the right door (or turn on and then off the power switch) to perform the color plane registration. 2. If the error persists, replace the registration density sensor assembly.

• Code: 54.00.19
• Display: 54.XX.YY Error
• Description: A sensor error has occurred
  Registration density sensor failure
• Remedy: 1. Open and close the right door (or turn on and then off the power switch) to perform the color plane registration. 2. If the error persists, replace the registration density sensor assembly.

• Code: 54.01.05
• Display: 54.XX.YY Error
• Description: A sensor error has occurred
  Media sensor is out of calibration range
• Remedy: 1. Turn the product off, and then clean the media sensor with a lint-free cloth. Turn the product on. 2. If the error persists, replace the paper pickup assembly.

• Code: 54.06.21
• Display: 54.XX.YY Error
• Description: A sensor error has occurred
  Primary laser/scanner beam detect abnormality
• Remedy: 1. Turn the product off, and then on. 2. If the error persists, replace the laser/scanner assembly. 3. If the product has had parts removed or replace, check the connector (J110-C/M or J111-C/M) on the DC controller PCA.

• Code: 54.0X.0B
• Display: 54.XX.YY Error
• Description: A sensor error has occurred
  Density sensor out of range error or Dhalf calibration failure X = 0 black, X = 1 cyan, X = 2 magenta, X = 3 yellow
• Remedy: 1. Check the supplies status page to make sure the toner cartridges are not past their useful life. 2. Check the ITB for damage. 3. Make sure the CPR sensor is not contaminated with toner or paper dust. Clean the sensor with compressed air and soft brush. 4. If error persists, replace the registration sensor assembly.

• Code: 54.0X.0B
• Display: 54.XX.YY Error
• Description: A sensor error has occurred
  Density sensor out of range error or Dhalf calibration failure X = 0 black, X = 1 cyan, X = 2 magenta, X = 3 yellow
• Remedy: 1. Check the supplies status page to make sure the toner cartridges are not past their useful life. 2. Check the ITB for damage. 3. Make sure the CPR sensor is not contaminated with toner or paper dust. Clean the sensor with compressed air and soft brush. 4. If error persists, replace the registration sensor assembly.