IBM 306m User Guide - Page 25

System-board, switches, jumpers

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System-board switches and jumpers The following illustration shows the switches and jumpers on the system board. Disable mBMC Boot block recovery jumper Clear CMOS jumper The following illustration identifies the pins on a jumper and shows the location of pin 1. 3 2 Pin 1 mark 1 Table 2. Switch and jumper settings Component Settings CMOS jumper (JP3) v Pins 1 and 2: Keep CMOS data (default) v Pins 2 and 3: Clear the CMOS data, which clears the power-on password and administrator password Boot block jumper (JP4) v Pins 1 and 2: Normal (default) v Pins 2 and 3: Boot from boot block. Mini-BMC jumper (JP6) v Pins 2 and 3: Normal (default) v Pins 1 and 2: Disable the mini-BMC. Use this setting when a service processor adapter other than the optional Remote Supervisor Adapter II is installed. Chapter 2. Installing options 13

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System-board
switches
and
jumpers
The
following
illustration
shows
the
switches
and
jumpers
on
the
system
board.
Boot block
recovery jumper
Clear CMOS jumper
Disable mBMC
The
following
illustration
identifies
the
pins
on
a
jumper
and
shows
the
location
of
pin
1.
3
2
1
Pin 1 mark
Table
2.
Switch
and
jumper
settings
Component
Settings
CMOS
jumper
(JP3)
v
Pins
1
and
2:
Keep
CMOS
data
(default)
v
Pins
2
and
3:
Clear
the
CMOS
data,
which
clears
the
power-on
password
and
administrator
password
Boot
block
jumper
(JP4)
v
Pins
1
and
2:
Normal
(default)
v
Pins
2
and
3:
Boot
from
boot
block.
Mini-BMC
jumper
(JP6)
v
Pins
2
and
3:
Normal
(default)
v
Pins
1
and
2:
Disable
the
mini-BMC.
Use
this
setting
when
a
service
processor
adapter
other
than
the
optional
Remote
Supervisor
Adapter
II
is
installed.
Chapter
2.
Installing
options
13