• Code: 160 ... 163
• Description: Toner sensor detection error (160=Y, 161=M, 162=C, 163=K). This error does not occur with the MFP in the factory shipped configuration.
• Remedy: Is the toner cartridge installed? Is the toner slide shutter set?
  Install the toner cartridge. Turn it to the fixed position. Turn off and on the MFP. Replace the toner sensor assembly.

• Code: 167
• Description: Thermistor slope error
• Remedy: Does an error message appear? Does the error occur again?
  Turn off and on the MFP. Turn off and on the MFP after leaving it for 30 minutes.

• Code: 168
• Description: Compensation thermistor error
• Remedy: Does an error message appear? Does the error occur again? Yes Turn off and on the MFP. Turn off and on the MFP after leaving it for 30 minutes.

• Code: 169
• Description: An error of the Upper Side Thermistor
• Remedy: Does the error occur again? Yes Turn on the power unit. Leave the device for 30 minutes and turn on the power unit again.

• Code: 170, 171
• Description: A fuser thermistor short or open circuit was detected.
• Remedy: Does the error occur again? Yes Turn off and on the MFP. Replace the fuser unit.

• Code: 172 ... 173
• Description: A fuser thermistor temperature error (high or low temperature) was detected.
• Remedy: Does the error occur again? Turn off and on the MFP. Replace the fuser unit. Replace the lowvoltage power supply, and then replace the CU/PU board when the error occurs again.

• Code: 174
• Description: A backup thermistor shot circuit was detected (high temperature)
• Remedy: Does the error occur again? Yes Turn off and on the MFP. Replace the fuser unit.

• Code: 175
• Description: A backup thermistor open circuit was detected (low temperature)
• Remedy: Does the error occur again? Yes Turn off and on the MFP. Replace the fuser unit.