• Code: 173 ... 177
• Display: Service Call 173: Error 177: Error
• Description: Thermistor indicates Low Temperature (COLD) Error.
• Remedy: 1) Is an Error message displayed? 2) Does the Error take place again?
  Turn ON power again. Leave in that state for 30 minutes then turn ON power again.

• Code: 179
• Display: Service Call 179: Error
• Description: Wrong Fuser Standard
• Remedy: 1) Is the model and power voltage of the fuser mounted proper? 2) Fuser is properly mounted, but Error results again.
  Assemble the proper fuser. Check to see that the fuser is properly assemble. Replace fuser.

• Code: 180 ... 186
• Display: Service Call 180: Error to 186: Error
• Description: The engine detects communication is not possible with the optional unit.
  180:Envelope Feeder (Unused) 181:Duplex unit 182:Tray2 unit 183:Tray3 unit 184:Tray4 unit 185:Tray5 unit 186:Finisher unit
• Remedy: 1) Is an Error message displayed? 2) Does the Error take place again?
  Turn ON power again. Replace optional unit.

• Code: 187
• Display: Service Call 187: Error
• Description: Communication with control panel failed.
• Remedy: Is the control panel and cable connected properly?
  Connect properly Replace the control panel and cable.

• Code: 188
• Display: Service Call 188: Error
• Description: Sub-CPU I/F Error
• Remedy: Sub-CPU Communication Error. Check the connection of the S2M board. Replace the S2M board.

• Code: 189
• Display: Service Call 189: Error
• Description: Inverter Unit I/F Error
• Remedy: 1) Inverter communications error 2) Does the Error take place again?
  Check the connection of the I/F cable. Replace the V72-3 board.

• Code: 190
• Display: Service Call 190: Error
• Description: System Memory Overflow
• Remedy: System Memory Overflow Power OFF/ON Replace CU PCB. (Replace EEPROM)

• Code: 200 ... 202
• Display: Service Call 200: Error to 202: Error
• Description: PU Firm Download Error Error occurred when downloading PU firmware.
• Remedy: Error occurred when downloading PU firmware. After turning ON the power again, try downloading again. (This process isn’t executed for regular operations, therefore, will not occur)