Component Identifications
HP ProLiant DL320 Generation 3 Server Maintenance and Service Guide
4-5
System Switches
The server has a switch bank (SW1) for system configuration and a non-maskable interrupt
switch (NMI button/SW3) that is used in the event of a service emergency that requires a
complete data dump before restarting the operating system.
Refer to the labels on the inside of the server access panel or to the following sections for the
proper switch settings. Figure 4-4 and Table 4-4 show the location of the system switches.
Figure 4-4: System switches
Table 4-4: System Switches
Item Description
1
System maintenance switch (SW1)
2
NMI button (SW3)
System Maintenance Switch (SW1)
The SW1 (eight-position switch) on the system board is used to implement the various
protections and override functions. All eight switches will have the off position as the default
configuration (defaults also shown in bold). This switch is also used to control a multiplexer
to switch between port 84/85 and iLO diagnostic LEDs. The use of this switch to control the
multiplexer is for debug purposes only. The shipping setting also controls the multiplexer
so
that the iLO diagnostic LEDs will be on (see Table 4-5).
