Code :

Code: L8-20
Description: Power controller communication trouble. Communication establishment error / framing / parity/ protocol error
Causes: Connection trouble of the connector between the mother board and the MFPC PWB. MFPC PWB mother board connector pin breakage.
Remedy: Check connection of the connector between the mother board and the MFPC PWB. Check grounding of the machine.

Code: U2-00
Description: EEPROM read / write error (ICU)
Causes: EEPROM device trouble. EEPROM device connection trouble. Device access error due to noises
Remedy: Replace the EEPROM device. Check installation of the EEPROM device. Replace the ICU PWB.

Code: U2-05
Description: HDD / SRAM Flash / EEPROM discrepancy. The HDD or the SRAM which differs from what was installed before turning off the power is installed
Causes: HDD replacement or SRAM replacement
Remedy: Initialize the authentication information with Sim. 16. Import the backup (export data by device cloning) if any.

Code: U2-10
Description: SRAM user authentication index check sum error. User index information (user authentication basic data) check sum error on the SRAM
Causes: SRAM trouble. Control circuit malfunction. ISU PWB SRAM access circuit trouble.
Remedy: Use Sim. 16 to develop the user index information save data from the HDD to the SRAM.

Code: U2-11
Description: Counter check sum error (ICU). A check sum error of the counter information on the EEPROM occurs
Causes: EEPROM device trouble. EEPROM device contact trouble. Device access error due to noises.
Remedy: Cancel the U2 trouble.

Code: U2-22
Description: SRAM memory check sum error (MFP)
Causes: SRAM trouble. Control circuit malfunction due to noises. MFP PWB SRAM access circuit trouble.
Remedy: Initialize the communication management table registered in the SRAM and the FAX soft switch setting. Since the registered contents are deleted, register the deleted contents again. Use Sim. 16 to cancel the U2 trouble. Replace the MFP PWB.

Code: U2-23
Description: SRAM memory individual data check sum error (MFP). MFP PWB SRAM memory individual data check sum error (communication management table, sender registration data, etc.)
Causes: SRAM trouble. Control circuit malfunction due to noises. MFP PWB SRAM access circuit trouble.
Remedy: Turn OFF / ON the power to initialize the data related to the content of check sum error. Since the registered content is deleted, register the deleted content again. All the SRAM contents are set to 0 (default) in production. In this case, it is not treated as the U2-22 trouble, but the SRAM contents are initialized by the software. (The default values of the software are set.) Use Sim. 16 to cancel the U2 trouble. Replace the MFP PWB.