Switches And Jumpers; Switches; Jumpers - IBM HS40 - BladeCenter - 8839 Installation And User Manual

Switches and jumpers

The following illustration shows the switches and jumpers on the I/O board.

Switches

Table 1 describes the function of each switch on switch block (S6H1).
Table 1. Configuration Switch block (S6H1)
Switch
number Default value
1 Off
2 Off
3 through 5 Off

Jumpers

When the BIOS code page jumper (J1E2) is moved from pins 1 and 2 to pins 2 and
3, you can start the blade server from a backup BIOS page. The default position is
pins 1 and 2. See the blade server Hardware Maintenance Manual and
Troubleshooting Guide on the IBM BladeCenter Documentation CD or the IBM
BladeCenter T Documentation CD for more information.
Note: If you start the blade server from the backup page because the primary
BIOS page has become damaged, you need to flash the primary BIOS code.
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BladeCenter HS40 Type 8839: Installation and User's Guide
Configuration
switch block (S6H1)
Light path
diagnostics button (S8A1)
Switch
description
Reserved
Password clear
Reserved
3
2
1
BIOS code
page jumper
(J1E2)