HP ProLiant DL145 Maintenance And Service Manual page 86

Connectors, Switches, and LEDs
Table 4-3: System Board Components
Item
36
37
38
39
40
41
42
43
44
45
46
System Switches
The two system switches—SW1 and SW2— are located on the system board.
NMI Switch
If the system crashes or stops operating properly, you can use the NMI switch (SW1) to
mechanically force the server to issue a non-maskable interrupt. This will perform a memory
dump—writing the contents of the server's CPU registers and RAM to a network server or to
diskettes. This memory dump can later be analyzed to determine the cause of the problem.
The NMI switch is recessed beneath a small button on the system board. Figure 4-4 show the
location use of this switch. By the default the NMI switch is always enabled.
Figure 4-4: NMI switch
NOTE: Use of the NMI switch is not supported in all NOS. As of the present, NMI implementation is not
available for systems running on Solaris and Linux operating systems.
4-6
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Component Code Component
BT1 3 V internal lithium system battery
SW2 System configuration switch (dip switch)
U79 SMSC LPC47M192 Super I/O chipset
U60 16 MB DDR SDRAM
SW1 NMI (non-maskable interrupt) switch
U56 NVIDIA GeForce2 MX400 GPU (Graphics Processor Unit)
U82 SMSC LAN91C113I-NC LAN controller (10/100 Mbps)
U52 BMC flash EEPROM
CN23 BMC debug port
U67 QLogic Zircon UL BMC (Baseboard Management Controller)
U47 IC61LV25616-10T BMC SRAM
HP ProLiant DL145 Generation 2 Server Maintenance and Service Guide
continued