• Code: 160 ... 163
• Display: SERVICE CALL 160:ERROR 163:ERROR
• Description: Toner sensor detection error (160=Y, 161=M, 162=C, 163=K). This error does not occur with the printer 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 printer. Replace the toner sensor assembly.

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

• Code: 168
• Display: SERVICE CALL 168:ERROR (Note)
• Description: Compensation thermistor error
• Remedy: Does an error message appear? Does the error occur again?
  Turn off and on the printer. Turn off and on the printer after leaving it for 30 minutes.

• Code: 170, 171
• Display: SERVICE CALL 170:ERROR 171:ERROR (Note)
• Description: A fuser thermistor short or open circuit was detected.
• Remedy: Does the error occur again? Turn off and on the printer. Replace the fuser unit.

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

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

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

• Code: 176, 177
• Display: SERVICE CALL 176:ERROR 177:ERROR
• Description: A backup thermistor temperature error (high or low temperature) was detected.
• Remedy: Does the error occur again? Turn off and on the printer. Replace the fuser unit.
  Does the error occur again? Replace the lowvoltage power supply.