• Code: 176, 177
• Display: Service call 176: Error, 177: Error
• Description: An abnormal (high or low) temperature of the Lower Thermistor was detected.
• Remedy: Does this error recur? Yes Restore the power. Replace the fuser unit.

• Code: 181 ... 184
• Display: Service call 181: Error to 184: Error
• Description: Option unit I/F error (181=Duplex Unit, 182 to 184=Optional Tray)
• Remedy: Does this error recur? Yes Restore the power. Check to make sure the contact points of the connector and replace the optional unit.

• Code: 190
• Display: Power off/on 190: Error
• Description: System memory overflow
• Remedy: Does this error recur? Yes Restore the power. Install an add-on RAM DIMM.

• Code: 200 ... 202
• Display: Service call 200: Error to 202: Error
• Description: PU Firmware Download error
• Remedy: An error occurred during rewriting of the PU firmware. Restore the power and retry download. (This error doesn’t occur because this process is not performed in normal operation.)

• Code: 203, 204
• Display: Power off/on 203: Error, 204: Error
• Description: CU program error (not occur in normal operation)
  The CU program executed abnormal processing.
• Remedy: The CU program executed abnormal processing. Restore the power.

• Code: 207, 208
• Display: Power off/on 207: Error, 208: Error
• Description: CU program error (not occur in normal operation)
  The CU program executed abnormal processing.
• Remedy: The CU program executed abnormal processing. Restore the power.

• Code: 209
• Display: Power off/on 209: Download Error
• Description: Custom Media Type table downloading failed.
  Custom Media Type table downloading failed.
• Remedy: Custom Media Type table downloading failed. After turning on the power again, perform downloading again. (This error does not occur during the normal operation because this processing is not carried out in normal operation.)

• Code: 213, 214
• Display: Power off/on 213: Error, 214: Error
• Description: CU program error (not occur in normal operation)
  The CU program executed abnormal processing.
• Remedy: The CU program executed abnormal processing. Restore the power.