Electrical Components
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board.
• Make sure the NVRAM [A] is installed at the correct mounting location and orientation. Install
the NVRAM so that the indentation on the NVRAM corresponds with the mark [B] on the
controller board.
• Incorrect installation of the NVRAM will damage both the controller board and NVRAM.
NVRAM on the controller board
• SC195 (Machine serial number error) will be displayed if you forget to attach 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.
• Installing a new NVRAM initializes SPs and issues an SC. Reset the SC with the procedure below.
1. Make sure that you have the SMC report (factory settings). This report comes with the machine.
2. Output the SMC log using one of the following methods:
To print SMC log data, execute SP5-990-001.
To save SMC log data to an SD card, execute SP5-992-001 (SMC List Card Save Function).
3. Turn off the main power switch.
4. Insert a blank SD card in the 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
SP5-846-051.
• The address data stored in the machine will be discarded later during this procedure. So be sure
to obtain a backup of the customer’s address book data.
• Note that the counters for the user will be reset when doing the backup/restore of the address
book data.
• If they have a backup of the address book data, use their own backup data for restoring. This is
because there is a risk that the data cannot be backed up properly depending on the NVRAM
condition.
7. Do the following steps if the machine has the fax unit. If not, skip this step:
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