When you replace the FCU board, transfer the SRAM data from the old FCU board to the new FCU board. Perform 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 rear upper cover [A].
  2. IM 550F/600F only: Insert a flathead screwdriver into [A] to release a hook of the controller cover [B].

  3. Release the hook by opening the right side of the cover as shown below, and then remove the cover [A] by rotating it in the direction of the blue arrow.

    • Be careful not to damage the hooks on the inside of the controller cover when you remove or install the controller cover.

  4. Insert a flathead screwdriver in the order of , , and to release three hooks.
    IM 600SRF only: Release the hook .

  5. Remove the rear left stay [A].
    IM 550F/600F:

    IM 600SRF:

    • Be careful not to damage the hooks on the inside of the rear left stay when you remove or install the rear left stay.
      IM 550F/600F:

      IM 600SRF:

  6. IM 600F only: Remove the cover [A].
  7. Disconnect the connector of the speaker.
  8. Remove the fax unit [A].
  9. Remove the bracket [A].
  10. Disconnect the connector.
  11. Remove the FCU board [A].
  12. 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.

  13. 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.

  14. Install the new FCU board to the fax unit.
    1. Attach the two brackets [A] to the new FCU board [B].
    2. Connect the connector.
    3. Attach the bracket [A].
  15. Attach the flat cable [A] to CN603 of the new fax unit.
    Make sure that the blue tape of the flat cable faces outward.
  16. Remove the slot cover [A].
  17. Remove the controller box cover [A].

  18. Install the new fax unit [A] to the main machine.

    • When installing the new fax unit [A], be careful not to damage the flat cable [B]. After installing the new fax unit [A], pull out the flat cable [B] from the main machine, as shown below.

  19. Connect the connector of the speaker.
  20. Connect the flat cable [A] to CN603 of the removed FCU board [B].

  21. Turn ON the main power.
    SRAM data transmission starts. When the transmission is completed, you will hear a beeper sound.

    • The beeper sound is at the same volume as the speaker sound.
    • The beeper sounds even if the speaker sound is turned off.
    • If the beeper does not sound, repeat the main power OFF/ON until the beeper sounds, and then perform the transmission procedure. If the data cannot be transmitted, repeat transmission 2 or 3 times.
    • If the beeper does not sound after turning the main power OFF/ON 3 times, you need to input the settings stored in SRAM memory manually.

  22. When the message "Ready" is displayed on the operation panel, turn the main power OFF.
  23. Disconnect the flat cable [A] from the removed FCU board [B].
  24. Disconnect the connector of the speaker.
  25. Remove the new FCU board [A] from the main machine.

  26. Reattach the controller box cover [A].

    • The screw [B] is a small screw. Be careful not to use the wrong screw.

  27. Reattach the slot cover [A].
  28. Install the new fax unit [A] to the main machine.
  29. Connect the connector of the speaker.
  30. Reassemble the machine.
  31. Turn ON the main power. Execute SP6-101 to print the system parameter list.
  32. Check the system parameter list to make sure that the data is transferred correctly.
  33. 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.