BICU and Controller Board
D127/D128 4-36 SM
When replacing the NVRAM on the controller board
1. Disconnect the cables of the HDD from the controller board.
 Disconnecting the cables of the HDD is very important. Otherwise, the HDD is
automatically formatted and all data in the HDD is lost due to the security limitation.
2. Install a New NVRAM on the controller. Then reassemble the machine.
 When you replace the NVRAM [A], make sure that the NVRAM is correctly installed.
 The mark [B] on the NVRAM should be directed to the right side (seem from the back
side of the machine).
3. Remove the Security Card or Printer/Scanner card from SD slot 1.
4. Install a new Security Card in SD slot 1.
5. Turn the main switch on.
6. SC995-02 occurs.
7. Turn the machine off.
8. Connect the cables of the HDD to the controller board.
9. Reassemble the machine, and then turn on the machine.
10. Do the process control self-check.
11. Do ACC for the copier application program.
12. Do ACC for the printer application program.
13. Do SP5-878-001 to install the DataOverwriteSecurity application.
14. Do SP5878-002 to install the HDD Encryption application.
15. Merge all applications in a one SD card in SD slot 1 with SP5831-001 if necessary.
16. Copy the old NVRAM data to the new NVRAM with SP5-825 or input the SMC data in the
machine. (For details, refer to the p.5-3 "NVRAM Data Upload/Download" in the "System
Service Mode" of the appendices of the this manual)
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