System-Board Leds - Lenovo System x3550 M3 Problem Determination And Service Manual

Table 6. System board SW4 switch block definition
Default position
Switch number
1
Off
2 Off
3
Off
4
Off
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
on page 417, "Handling static-sensitive devices" on page
2. Any system-board switch or jumper blocks that are not shown in the illustrations in this document are
reserved.

System-board LEDs

The following illustration shows the light-emitting diodes (LEDs) on the system board.
Description
Power-on password override. Changing the
position of this switch bypasses the power-on
password check the next time the server is
turned on and starts the Setup utility so that you
can change or delete the power-on password.
You do not have to move the switch back to the
default position after the power-on password in
overridden.
Changing the position of this switch does not
affect the administrator password check if an
administrator password is set.
See "Passwords" on page 520
information about passwords.
When you toggle this switch On and then Off,
you force a power-on, which overrides the
power-on and power-off button on the server
and they become nonfunctional.
(Trained service technician only) Forced power
permission. Changing the position of this switch
overrides the IMM power-on checking process.
Reserved.
"Safety" on page v, "Installation guidelines"
419, and "Turning off the server" on page
.
Chapter 2 The Lenovo System x3550 M3 server
for additional
16.
21