• Code: 0150
• Description: Backup memory read/write error (control PWB)
  No response is issued from the device in reading/writing for 5 ms or more and this problem is repeated 5 times successively. Mismatch of reading data from 2 locations occurs 8 times successively. Mismatch between writing data and reading data occurs 8 times successively.
• Causes: EEPROM (Control PWB)
• Remedy: 1. Turn the main power swtch off and after 5 seconds, then turn power on. 2. Check that the EEPROM is peroperly installed on the control PWB and reinstall it. 3. Replace the control PWB and check for correct operation. 4. Check the EEPROM and if the data are currupted, contact the service support.

• Code: 0160
• Description: Backup memory data error (control PWB)
  Reading data from EEPROM is abnormal.
• Causes: EEPROM
• Remedy: 1. Turn the main power swtch off and after 5 seconds, then turn power on. 2. Execute U021 - memory initializing. 3. If the EEPROM data are currupted, contact the service support.

• Code: 0170
• Description: Billing counting error
  The values on the main circuit PWB and on the engine do not match for any of charging counter, life counter, and scanner counter.
• Causes: EEPROM. Control PWB
• Remedy: EEPROM 1. Check that the EEPROMs installed in the control PWB are correct and, if not, use the correct EEPROM for the model. 2. If the EEPROM data are currupted, contact the service support.
  Control PWB Replace the control PWB and check for correct operation.

• Code: 0180
• Description: Machine number mismatch
  Machine number of control does not match.
• Causes: Data damage of EEPROM.
• Remedy: 1. Confirm the machine data for the control units by using U004. 2. If the serial number data of different models is alternately displayed, install the correct EEPROM in the PWB of the wrong serial number data. 3. Contact the Service Support.

• Code: 0190
• Description: Backup memory device error (control PWB)
• Causes: Control PWB
• Remedy: Control PWB Replace the control PWB and check for correct operation.

• Code: 0800
• Description: Image processing error
  JAM010X is detected twice.
• Causes: Control PWB.
• Remedy: Control PWB Replace the control PWB and check for correct operation.

• Code: 0830
• Description: FAX control PWB flash program area checksum error
  A checksum error occurred with the program of the FAX control PWB.
• Causes: FAX software. FAX control PWB.
• Remedy: FAX software 1. Reinstall the fax software.
  FAX control PWB 1. Execute initializing by U600.(Refer to the FAX service manual) 2. Replace the FAX control PWB.

• Code: 0840
• Description: Faults of RTC (“Time for maintenance T” is displayed) [Check at power up]
  The RTC setting has reverted to a previous state. The machine has not been powered for 5 years (compared to the settings stored periodically in the EEPROM). The RTC setting is older than 00:01 on January 1, 2000. [Checked periodically (in 5- minute interval) after powered up] The RTC setting has reverted to a state older than the last time it was checked. 10 minutes have been passed since the previous check.
• Causes: Battery (Control PWB). Control PWB.
• Remedy: Battery (Control PWB) 1. Make sure that the back-up batteries on the control PWB are not short-circuited. 2. If the same C call is displayed when power is switched on and off, replace the back up battery. 3. If communication error (due to a noise, etc.) is present with the RTC on the control PWB, check the PWB is properly grounded.
  Control PWB Replace the control PWB and check for correct operation.