Ricoh Di-C1 Manual page 107

Remove the NVRAM from the old iCTL and install
it on the new one.
Make sure that you install the correct board.
There are 4 models. The iCTL board is different
for each one.
If you install the wrong board, the machine will
not work.
Slide 107
No additional notes
Replacing the iCTL
107
Di-C1 Training