• Code: 169
• Display: Service call 169: Error
• Description: Upper Side Thermistor Error
• Remedy: Is the error message displayed? Does the error recur?
  Turn on the power supply again Turn on the power supply again after storage for 30 minutes.

• Code: 170, 171
• Display: Service call 170: Error 171: Error
• Description: Thermistor Short circuit / Open circuit of the fuser is detected
• Remedy: Check the cable connection between the ZAK board and TB3 board and turn on the power again. Replace the fuser unit. Replace the TB3 board.

• Code: 172, 173
• Display: Service call 172: Error 173: Error
• Description: Thermistor Temperature abnormality (high or low) of the fuser is detected
• Remedy: Check the cable connection between the ZAK board and TB3 board and turn on the power again. Replace the fuser unit. Replace the TB3 board.

• Code: 174
• Display: Service call 174: Error
• Description: The short circuit of the backup roller Thermistor is detected. (For the high temperature)
• Remedy: Check the cable connection between the ZAK board and TB3 board and turn on the power again. Replace the fuser unit. Replace the TB3 board.

• Code: 175
• Display: Service call 175: Error
• Description: The open circuit of the backup roller Thermistor is detected. (For the low temperature)
• Remedy: Check the cable connection between the ZAK board and TB3 board and turn on the power again. Replace the fuser unit. Replace the TB3 board.

• Code: 176, 177
• Display: Service call 176: Error 177: Error
• Description: Temperature abnormality (high or low) of the backup Laura thermistor was detected
• Remedy: Check the cable connection between the ZAK board and TB3 board and turn on the power again. Replace the fuser unit. Replace the TB3 board.

• Code: 190
• Display: Service call 190: Error
• Description: System memory overflow
• Remedy: Turn on the power supply again. Install an additional RAM DIMM.

• Code: 200 ... 202
• Display: Service call 200: Error 202: Error
• Description: PU Firmware Download Error
  Error occurs when the PU firmware is rewritten
• Remedy: After the power supply is turned on again, try to download again. (Because this processing is not performed during usual operation, it does not occur.)