• Code: U2-05
• Description: HDD/MFP PWB SRAM contents inconsistency
• Causes: The HDD or the MFP PWB which differs from that before turning OFF the power is installed. HDD trouble. MFP PWB trouble.
• Remedy: Use SIM16 to cancel the error. If there is backup data (export data by device cloning), import it.

• Code: U2-10
• Description: MFP PWB SRAM user authentication index check sum error
• Causes: SRAM user index information (user authentication basic data) check sum error. MFP PWB SRAM trouble. Strong external noises.
• Remedy: Use SIM16 to cancel the error. Transfer the user index information data in the HDD to the SRAM. Replace the MFP PWB.

• Code: U2-11
• Description: MFP PWB EEPROM counter check sum error
• Causes: MFP PWB EEPROM trouble. EEPROM socket contact trouble. MFP PWB trouble. Strong external noises.
• Remedy: Use SIM16 to cancel the error. Replace the MFP PWB.

• Code: U2-22
• Description: MFP PWB SRAM memory check sum error
• Causes: The identifier which controls the communication management table stored in the SRAM and the FAX soft switch is not detected correctly. MFP PWB SRAM trouble. MFP PWB trouble. Strong external noises.
• Remedy: Since the data of the communication management table and the FAX soft switch stored in the SRAM are initialized when an error occurs, register the deleted data again individually. Use SIM16 to cancel the error. Replace the MFP PWB.

• Code: U2-23
• Description: MFP PWB SRAM memory individual data check sum error
  MFP PWB SRAM memory individual data check sum error.
• Causes: The check sum value for individual data of the communication table and the sender registration does not match. MFP PWB SRAM trouble. MFP PWB trouble. Strong external noises.
• Remedy: Turn OFF/ON the power to initialize the data related to the content of check sum error. Since the registered contents are deleted, register the deleted contents again. Use SIM16 to cancel the error. Replace the MFP PWB.

• Code: U2-24
• Description: MFP PWB SRAM memory user authentication counter check sum error
• Causes: MFP PWB SRAM trouble. MFP PWB trouble. Strong external noises.
• Remedy: Use SIM16 to cancel the error.

• Code: U2-30
• Description: MFP PWB and PCU PWB manufacturing No. data inconsistency
• Causes: Inconsistency between the manufacturing No. saved in the PCU PWB and that in the MFP PWB. When replacing the PCU PWB or the MFP PWB, the EEPROM which was mounted on the PWB before replacement is not mounted on the new PWB. MFP PWB trouble. PCU PWB trouble
• Remedy: Check that the EEPROM is properly set. Check to confirm that the EEPROM which was mounted on the PWB before replacement is mounted on the new PWB. Replace the MFP PWB. Replace the PCU PWB.

• Code: U2-50
• Description: HDD/Flash memory registration data check sum error
  HDD/MFP Flash data check sum error (MFP PWB detection)
• Causes: HDD/MFP PWB Flash memory data check sum error (when HDD is not installed) • Address book • Image send series registration data (Sender record, meta data, etc.) • Job end list (FAX/Internet FAX/scanner job only), etc. Error in write/read circuit to HDD or MFP Flash memory Malfunctions caused by noises MFP PWB HSS access circuit error
• Remedy: Use SIM16 to cancel the U2 trouble. Check the following data for any abnormality. If there is any abnormality, reset and register the content. • Address book • Image send series registration data (Sender record, meta data, etc.) • Job end list (FAX/Internet FAX/scanner job only), etc. Replace the HDD. Replace the MFP PWB.