Switches And Jumpers; Switches; Jumpers - IBM HS40 - BladeCenter - 8839 Maintenance And Troubleshooting 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 for more
information.
Note: If you start the blade server from the backup page because the primary
38
BladeCenter HS40 Type 8839: Hardware Maintenance Manual and Troubleshooting Guide
Light path
diagnostics button (S8A1)
Switch
description
Reserved
Password disable
Reserved
BIOS page has become damaged, you need to flash the primary BIOS code.
See "Recovering the BIOS code" on page 30 for instructions.
Configuration
switch block (S6H1)
3
2
1
BIOS code
page jumper
(J1E2)