System-Board Switches And Jumpers - IBM eServer xSeries 235 Installation Manual

System-board switches and jumpers

The following illustration shows the system-board switch block (SW1) and jumper
blocks (J28 and J42) on the system board.
Table 2 describes the function of each switch on the switch block.
Table 2. Switches 1-8
Switch Default value
number
8 Off
7 Off
6 Off
5 Off
4 Off
3 Off
2 Off
IXA adapter
jumper (J42)
1 1
2 2
3 3
1-2 2-3
Disabled Enabled
Switch
description
400 MHz system board - Reserved. 533 MHz system board - Disable Wake on LAN
after ac power-on.
Power-on override. When toggled to On, this switch forces the server to turn on,
overriding the power-on button.
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
Configuration/Setup Utility program so that you can change or delete the power-on
password. You do not need to move the switch back to the default position after the
password is overridden.
Changing the position of this switch does not affect the administrator password
check, if an administrator password is set.
See the User's Guide on the IBM xSeries Documentation CD for additional
information about the power-on password.
Reserved.
Reserved.
Reserved.
Reserved.
Boot block recovery
jumper (J28)
3 3
2 2
1 1
1-2 2-3
Normal Update
System board
switch block (SW1)
9
Chapter 1. Introduction