Ricoh DD 4450 - Page 149

Network Printer Controller
SM 4-77 C279
Replacement
and
Adjustment
3. Remove the printer board [A] from the case (
× 7, × 1).
 Remove the SD card [B] before you remove the printer board, if there is an SD card
in the board.
 When you replace the printer board, remove the NVRAM [C] from the old printer
board and install it on the new printer board. Otherwise, all the controller settings
(such as the IP address) will be lost.