Ricoh SP 8400DN Field Service Manual page 1144

4.Replacement and Adjustment
controller board.
•
When installing a new controller board, install the NVRAM removed from the old board, or a new
NVRAM if the old NVRAM is defective. Install the NVRAM [C] so that the indentation [B] on the
NVRAM corresponds with the mark [A] on the controller board. Incorrect installation of the
NVRAM will damage both the controller board and the NVRAM.
Replacing the NVRAM on the controller board
•
Referring to the previous procedure, be sure that there are no mistakes in the mounting position and
orientation of the NVRAM.
•
If you mounted the NVRAM in the wrong direction, each component needs to be replaced because a
short circuit was caused in the controller board and the NVRAM.
1. Make sure you have the SMC report (factory settings). This report comes with the machine.
2.
Output all the SMC data using SP5-990-001 (SP Print Mode: All (Data List)).
3. Turn off the main power switch.
4.
Insert a blank SD card in SD slot 2, and then turn on the main power switch.
5.
Use SP5-824-001 to upload the NVRAM data from the controller board.
6. Make sure the customer has a backup of their address book data. If not, obtain the backup by referring to the
following procedure.
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