• Code: 54.01.05
• Display: 54.XX.YY Error
• Description: The product experienced a sensor error.
  Media sensor is out of calibration range
• Remedy: 1. Turn the product off and then on. 2. If the error persists, replace the registration assembly.

• Code: 54.0X.07
• Display: 54.XX.YY Error
• Description: The product experienced a sensor error. • X = 5: Black • X = 6: Cyan • X = 7: Magenta • X = 8: Yellow
  Drum home position sensor failure
• Remedy: 1. Turn the product off and then on. 2. If the error persists, replace the main drive assembly. 3. If the product has had parts removed or replaced, check all the connectors on the main drive assembly, and check the connector (J140) on the DC controller PCA.

• Code: 54.0X.0B
• Display: 54.XX.YY Error
• Description: The product experienced a sensor error. • X = 0: Black • X = 1: Cyan • X = 2: Magenta • X = 3: Yellow
  Density sensor out of range error or Dhalf calibration failure
• Remedy: 1. Check the supplies status page to make sure that the print cartridges are not past their useful life. 2. Check the ITB for damage. 3. Make sure that the CPR sensor is not contaminated with toner or paper dust. Clean the sensor with compressed air and a soft brush. 4. If the error persists, replace the density detect assembly.

• Code: 54.0X.0C
• Display: 54.XX.YY Error
• Description: The product experienced a sensor error. • X = 0: Black • X = 1: Cyan • X = 2: Magenta • X = 3: Yellow
  Density sensor out of range error or Dhalf calibration failure
• Remedy: 1. Check the supplies status page to make sure that the print cartridges are not past their useful life. 2. Check the ITB for damage. 3. Make sure that the CPR sensor is not contaminated with toner or paper dust. Clean the sensor with compressed air and a soft brush. 4. If the error persists, replace the density detect assembly.

• Code: 54.0X.0D
• Display: 54.XX.YY Error
• Description: The product experienced a sensor error. • X = 0: Black • X = 1: Cyan • X = 2: Magenta • X = 3: Yellow
  Optical memory element abnormal or CPR sensor out of range
• Remedy: 1. Check the supplies status page to make sure that the print cartridges are not past their estimated 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 a soft brush. 4. If the error persists, replace the density detect sensor assembly.

• Code: 54.0X.0E
• Display: 54.XX.YY Error
• Description: The product experienced a sensor error. • X = 0: Black • X = 1: Cyan • X = 2: Magenta • X = 3: Yellow
  Optical memory element abnormal or CPR sensor out of range
• Remedy: 1. Check the supplies status page to make sure that the print cartridges are not past their estimated 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 a soft brush. 4. If the error persists, replace the density detect sensor assembly.

• Code: 54.0X.1E
• Display: 54.XX.YY Error
• Description: The product experienced a sensor error. • X = 0: Black • X = 1: Cyan • X = 2: Magenta • X = 3: Yellow
  Halftone calibration error
• Remedy: 1. Check the supplies status page to make sure that the print cartridges are not past their estimated 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 a soft brush. 4. If the error persists, replace the density detect sensor assembly.

• Code: 54.1X.1E
• Display: 54.XX.YY Error
• Description: The product experienced a sensor error. • X = 0: Black • X = 1: Cyan • X = 2: Magenta • X = 3: Yellow
  Halftone calibration error
• Remedy: 1. Check the supplies status page to make sure that the print cartridges are not past their estimated 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 a soft brush. 4. If the error persists, replace the density detect sensor assembly.