Ricoh DD 4450 Service Manual page 149

3. Remove the printer board [A] from the case ( × 7,
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.
SM
× 1).
4-77
Network Printer Controller
C279