Lenovo ThinkServer RS110, Hardware Maintenance Manual

Page: 26 / 252

System-board switches and jumpers
The following illustration shows the switches and jumpers on the system board.
NMI switch
Boot block
recovery jumper
Clear CMOS jumper
SAS/SATA
controller
card
The following illustration identifies the pins on a jumper and shows the location of
pin 1.
3
2
1
Pin 1 mark
Table 2. Switch and jumper settings
Component Settings
Clear CMOS jumper (JP3)
v
Pins 1 and 2: Keep CMOS data (default)
v
Pins 2 and 3: Clear the CMOS data, which clears the
power-on password and administrator password
Boot block jumper (JP4)
v
Pins 1 and 2: Normal (default)
v
Pins 2 and 3: Recover boot block
NMI (non-maskable
interrupt) switch (SW1)
v Normal (default): No NMI issued
v The NMI button that is on the rear of server, connected to
this switch, has been pressed: NMI issued
8
ThinkServer RS110 Types 6435, 6436, 6437 and 6438: Hardware Maintenance Manual