IBM HS40 Hardware Maintenance Manual - Page 48

Switches, jumpers, Jumpers

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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 number Default value Switch 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. 38 BladeCenter HS40 Type 8839: Hardware Maintenance Manual and Troubleshooting Guide

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Switches
and
jumpers
The
following
illustration
shows
the
switches
and
jumpers
on
the
I/O
board.
1
2
3
Configuration
switch block (S6H1)
Light path
diagnostics button (S8A1)
BIOS code
page jumper
(J1E2)
Switches
Table
1
describes
the
function
of
each
switch
on
switch
block
(S6H1).
Table
1.
Configuration
Switch
block
(S6H1)
Switch
number
Default
value
Switch
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.
38
BladeCenter
HS40
Type
8839:
Hardware
Maintenance
Manual
and
Troubleshooting
Guide