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Component identification 13
Switch Default Function
2
Off Off = System configuration can be
changed
On = System configuration is locked
5
Off Off = Power-on password is enabled
On = Power-on password is disabled
6
Off Off = No function
On = ROM reads configuration as
invalid
3, 4, 7, 8, 9,
10, 11, 12
— Reserved
When the system maintenance switch position 6 is set to the On position, the system is prepared to erase all
system configuration settings from both CMOS and NVRAM.
CAUTION: Clearing CMOS and/or NVRAM deletes configuration information. Be sure to
properly configure the server or data loss could occur.
NMI header
The NMI header enables administrators to perform a memory dump before performing a hard reset. Crash
dump analysis is an essential part of eliminating potential reliability issues, such as hangs or crashes in
operating systems, device drivers, and applications. Many crashes can freeze a system, requiring you to
perform a hard reset. Resetting the system erases any information that supports root cause analysis.
Systems running Microsoft® Windows® experience a blue-screen trap when the OS crashes. When this
happens, Microsoft® recommends that system administrators perform an NMI event by temporarily shorting
the NMI header with a jumper. The NMI event enables a hung system to become responsive again.
For additional information, see the HP website
(http://h20000.www2.hp.com/bc/docs/support/SupportManual/c00797875/c00797875.pdf).