Ricoh Di-C1 Manual page 108

Remove the NVRAM from the old BCU and install
it on the new one.
Turn the machine on.
SC995-01 appears. This means that the serial
number is not stored.
Store the serial number with SP 5811-004.
Cycle the main power off/on.
There is only one type of BCU. You install the
same board in each of the four models.
Slide 108
No additional notes
Replacing the BCU
108
Di-C1 Training