System-Board Switches And Jumpers - IBM xSeries 346 Hardware Maintenance Manual And Troubleshooting Manual

System-board switches and jumpers

The following illustration shows the switches and jumpers on the system board.
Any switches or jumpers on the system board that are not shown in the illustration
are reserved. See the section about recovering the basic input/output system
(BIOS) code in the Hardware Maintenance Manual and Troubleshooting Guide on
the IBM xSeries Documentation CD for information about the boot block recovery
jumper.
Table 7 describes the function of each switch on the switch block.
Table 7. Switches 1-8
Switch
number Default value
8 On
7 Off
6 Off
5 Off
4 Off
3 Off
2 Off
1 Off
68
xSeries 346 Types 8840 and 1880: Hardware Maintenance Manual and Troubleshooting Guide
Switch
description
Reserved.
Reserved.
Reserved.
Reserved.
Reserved.
Reserved.
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 have 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.
Power-on override. When toggled to On, this switch forces the power on, overriding
the power-on button.
System board
ON
switch block
(SW2)
1 2 3 4 5 6 7 8
Boot block
recovery jumper (J60)