Restoring Cmos To Default Values - Intel AC450NX Product Manual

AC450NX Rack Server System Product Guide
Table 17-1. Configuration Jumpers (J2C1)
Pins (default in bold)
1(B–C)
1(A–B)
2(B–C)
2(A–B)
3(B–C)
3(A–B)
4(B–C)
4(A–B)
5(B–C)
5(A–B)
6(B–C)
6(A–B)
7(B–C)
7(A–B)
8(B–C)
8(A–B)

Restoring CMOS to Default Values

The jumper on J2C1 pins 5(B-C) preserves the settings stored in CMOS nonvolatile memory
(NVRAM) during server reset. Moving the jumper to pins 5(A-B) clears CMOS and sets it and the
real-time clock (RTC) to the Setup default values during server reset.
To clear CMOS and restore the Setup default values:
1. Observe the precautions on page 115, "Safety Guidelines."
2. Turn off the server, and unplug the AC power cords from the power supplies or wall outlets.
3. Remove the top and right side covers. See Chapter 12, "Server Covers:
Removing/Reinstalling."
4. Move the jumper on J2C1 from pins 5(B-C) to pins 5(A-B).
5. Reinstall the covers, and plug in the power cords.
6. Turn on the server, and wait for POST to complete. This automatically restores CMOS and
RTC to Setup default values. See Chapter 3, "Power-on Self Test: Description/Running."
7. Turn off the server, unplug the power cords, and remove the top and right side covers.
8. Move the jumper from J2C1 pins 5(A-B) to pins 5(B-C).
9. Reinstall the covers, and plug in the power cords.
10. Run the SSU to configure your server. See Chapter 5, "System Setup Utility: When to Run."
194
Function
Disable programming onboard programmable devices
Allow programming of onboard programmable devices
Normal boot
Boot Recovery BIOS
Reserved
Reserved
Allow BIOS flash update
Disable BIOS flash update
Do not clear CMOS
Clear CMOS
Do not clear password
Clear password
Do not override PHP switches
Override PHP switches
Disable I/O SPI chain
Allow I/O SPI chain