• Code: 160 ... 163
• Display: Service call 160: Error to 163: Error
• Description: Toner sensor detection error (160=Y, 161=M, 162=C, 163=K) This error does not occur with the factory default settings.
• Remedy: Is the toner cartridge installed? Is the lock lever of the toner set? Does this error recur?
  Install the toner cartridge. Move the lock lever of toner cartridge to the lock position. Replace the toner sensor assembly.

• Code: 166
• Display: Service call 166: Error
• Description: An abnormality was detected with the power supply temperature thermistor.
  01: Short 02: Open 03: High temp. 04: Low temp.
• Remedy: 01, 02: Does this error recur? Does this error recur? Does this error recur? Restore the power. Replace the low voltage power supply unit. Replace the CU/ PU board. Replace the cable between the low voltage power supply unit and the CU/PU board.
  03: Does this error recur? Remove anything obstructing the ventilation slots if any and restore the power. Replace the low voltage power supply unit. Replace the CU/ PU board. Replace the cable between the low voltage power supply unit and the CU/PU board.
  04: Does this error recur? Raise the room temperature and restore the power. Replace the low voltage power supply unit. Replace the CU/ PU board. Replace the cable between the low voltage power supply unit and the CU/PU board.

• Code: 167
• Display: Service call 167: Error
• Description: Temperature difference error with Upper Center Thermistor and Planar Heater Thermistor
• Remedy: Is the error message displayed? Does this error recur?
  Restore the power. Replace the fuser unit.

• Code: 168
• Display: Service call 168: Error
• Description: Planar Heater Thermistor Error
  01: Short 02: Open 03: High temp. 04: Low temp.
• Remedy: Is the error message displayed? Does this error recur?
  Restore the power. Replace the fuser unit.

• Code: 169
• Display: Service call 169: Error
• Description: Upper Side thermistor error
  01: Short 02: Open 03: High temp. 04: Low temp.
• Remedy: Is the error message displayed? Does this error recur?
  Restore the power. Replace the fuser unit.

• Code: 170, 171
• Display: Service call 170: Error, 171: Error
• Description: Short circuit or open circuit of the Upper Center Thermistor was detected.
• Remedy:
  Does this error recur? Yes Restore the power. Replace the fuser unit.

• Code: 172, 173
• Display: Service call 172: Error, 173: Error
• Description: An either temperature aberration (a hightemperature or cold temperature) of Upper Center Thermistor, Lower Thermistor, Upper Side Thermistor, Planar Heater Thermistor was detected.
• Remedy: Does this error recur? Yes Restore the power. Replace the fuser unit.

• Code: 174, 175
• Display: Service call 174: Error, 175: Error
• Description: Short circuit or open circuit of the Lower Thermistor was detected.
• Remedy: Does this error recur? Yes Restore the power. Replace the fuser unit.