When you replace the FCU board, transfer the SRAM data from the old FCU board to the new FCU board. Do the following procedure to back up the SRAM data.

  • The following data can be transferred: TTI, RTI, CSI, Fax bit switch settings, RAM address settings, NCU parameter settings

  1. Open the front cover.

  2. Open the rear cover.

  3. Remove the right cover [A].

    • There are four tabs on the back of the right cover.

  4. Remove the controller box cover [A].
  5. Remove the screws of the bracket [A] and the FCU board.
  6. Disconnect the speaker connector and remove the FCU board [A] with the bracket.
  7. Change the orientation of the battery jumper switch [A] on the removed FCU board [B], and then attach the battery jumper switch [C]. The battery jumper switch [C] is provided with the new FCU board.


  8. Change the orientation of the battery jumper switch [A] on the new FCU board [B].

    • If the battery jumper switch is not in the correct position, SC820 will occur.

  9. Remove the HDD.

    • It is not necessary to disconnect the HDD cable.


  10. Insert one end of the supplied flat cable [A] into the CN603 connector [B] on the new FCU board.

    • Make sure that the blue tape of the flat cable faces outward.

  11. Insert the new FCU board [A] in the machine and connect the speaker connector [B] to the new FCU board.
  12. Mount the old FCU board with bracket [A] to the controller box temporarily.

  13. Insert the other end of the flat cable [A] into the CN603 connector on the old FCU board [B].

    • To prevent a short circuit, make sure the old FCU board does not come into contact with anything metal.

    • Make sure that the blue tape of the flat cable faces outward.

  14. Turn the main power switch ON.

  15. The SRAM data transfer begins. Transfer is complete when a beep sounds.

    • The volume of the beep is set to the same level as the speaker volume.
    • If the speaker volume is set to off, the volume of the beep is set to its initial factory-set level.
    • If the machine does not beep, switch the main power off and then back on and try the data transfer again. Try several times if necessary.
    • Be sure to check the transfer result after executing data transfer. If the transfer has failed, you need to specify settings manually in the SP mode.

  16. When "Ready" appears on the control panel, switch the power OFF, and then remove the AC power plug from the receptacle.
  17. Disconnect the flat cable from both FCU boards.
  18. Remove the old FCU board with bracket from the controller box.
  19. Disconnect the speaker connector and remove the new FCU board [A] from the machine.
  20. Remove the bracket [B] from the old FCU board [A] and attach the bracket to the new FCU board.
  21. Mount the new FCU board in the machine and connect the speaker connector to the new FCU board.
  22. Reattach the controller box cover.
  23. Reattach the cover.
  24. Turn the main power switch on.
  25. Enter the SP mode, print the system parameter list from SP6-101 in the Fax SP menu, and then check the list to see whether the SRAM data has been transferred correctly.

  26. Set the correct date and time from the [User Tools].

    • User Tools > Machine Features > System Settings > Timer Setting > Set Date/Time

      • If any of the SRAM data was not transferred, input those settings manually.