Table 10. System-board SW13 switch block descriptions (continued)
2
Off Disable PASSWORD_OVERRIDE
function
Enable PASSWORD_
OVERRIDE function
3
Off Serial port message from Lenovo
XClarity Controller
Serial port message from
uEFI
4
Off Reserved for trained service technician
5
Off Reserved for trained service technician
6
Off Reserved for trained service technician
7
Off Reserved for trained service technician
8
Off
Normal
Force RTC reset
Important:
1. Before you change any switch settings or move any jumpers, turn off the server; then, disconnect all
power cords and external cables. Review the information in
http://thinksystem.lenovofiles.com/help/topic/
safety_documentation/pdf_files.html
, “Installation Guidelines” on page 59, “Handling static-sensitive
devices” on page 61, and “Power off the server” on page 10.
2. Any system-board switch or jumper block that is not shown in the illustrations in this document are
reserved.
The following table describes the functions of the button on the system board.
Table 11. Button on the server
Button name Function
Force NMI button This button is on the rear of the server. Press this button
to force a nonmaskable interrupt to the processor. You
might have to use a pen or the end of a straightened
paper clip to press the button. You can also use it to force
a blue-screen memory dump (use this button only when
you are directed to do so by Lenovo Support).
System-board LEDs
Use this information to locate the system-board LEDs.
The following illustration shows the light-emitting diodes (LEDs) on the system board.
26
ThinkSystem SR860 Maintenance Manual
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