The memory device on the controller board stores the data listed below. When replacing the controller board, be sure to move to the new controller board the data that can be moved.

Where to storeDataData migrationHow to move
eMMC

Server certificate

SSL public certificate

Data for customizing the message in the authentication/charging control window

Cannot be moved-
NVRAM

SP/UP data

Counter Data

OKTransfer the NVRAM of the old controller board to the new controller board.

 

 

  1. Remove the rear cover. (Rear Cover - Printer Model)
  2. Remove the controller box cover.
  3. Remove the SD card/LAN guide [A].

    There are two hooks on the SD card/LAN guide [A].



  4. Remove the “L-shaped” bracket [A].
  5. Remove the Wireless LAN board with bracket [A].

  6. Remove the controller board [A].
When installing the new controller board

Remove the NVRAM [A] from the old controller board, and install it on the new board.

  • Keep the NVRAM away from objects that can cause static electricity. Static electricity can damage NVRAM data.

  • Install the NVRAM so that the mark [B] on the NVRAM is on the right side when the controller board is installed.