NEC MC2400 - Manual (Page 79)

Configuring Your System 3-29
Resetting the CMOS NVRAM
Use the clear CMOS memory procedures, which includes the reset CMOS
NVRAM process, under "Enable F2 Prompt by Changing a Jumper and Using
SSU" in Chapter 5.
Clearing and Changing the Passwords
To clear and change the passwords:
1. Power off the system and remove the left panel as described in chapter 4 of
this guide.
2. Move the Password Clear jumper from pins 5-6 to pins 6-7. Refer to
“Configuring System Board Jumpers” to see the location of this jumper.
3. Power on the system and wait for POST to complete. This automatically
clears the old password.
4. Power off the system.
5. Move the Password Clear jumper back to pins 5-6.
6. Replace the panel and power on the system.
7. To specify a new password run the BIOS Setup Utility as described earlier
in this chapter.
Recovering the BIOS
Qualified technical personnel should only perform this procedure.
! CAUTION
Leave Recovery Boot jumper at factory-default setting.
A technically qualified person should only move this jumper.
Boot Block Write Protect
The jumper at pins 13, 14, and 15 controls whether the BIOS boot block is
protected from being erased and reprogrammed.
! CAUTION
Leave boot block jumper at factory-default setting:
Programming the boot block incorrectly will prevent the
system from booting. A technically qualified person should
only do programming. The procedure requires a special
“Boot Block Update Utility.” Contact your dealer or sales
representative for more information.