IBM HS40 manual Switches and jumpers, Jumpers

Switches and jumpers

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

Configuration switch block (S6H1)

3

2

1

BIOS code page jumper (J1E2)

Light path

diagnostics button (S8A1)

Switches

Table 1 describes the function of each switch on switch block (S6H1).

Table 1. Configuration Switch block (S6H1)

Switch		Switch
number	Default value	description
1	Off	Reserved
2	Off	Password disable
3 through 5	Off	Reserved

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 BIOS page has become damaged, you need to flash the primary BIOS code. See “Recovering the BIOS code” on page 30 for instructions.

38BladeCenter HS40 Type 8839: Hardware Maintenance Manual and Troubleshooting Guide