IBM 7947E3U, User Manual

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Table 3. Pass 8 level system board jumpers
Jumper number Jumper name Jumper setting
J29 UEFI boot recovery jumper
v
Pins 1 and 2: Normal
(default) Loads the primary
server (formerly BIOS)
firmware ROM page.
v
Pins 2 and 3: Loads the
secondary (backup) server
firmware ROM page.
J147 IMM recovery jumper
v Pins 1 and 2: Normal
(default) Loads the primary
IMM firmware ROM page.
v Pins 2 and 3: Loads the
secondary (backup) IMM
firmware ROM page.
Notes:
1. If no jumper is present, the server responds as if the pins are set to 1 and 2.
2. Changing the position of the UEFI boot recovery jumper from pins 1 and 2 to pins 2 and
3 before the server is turned on alters which flash ROM page is loaded. Do not change
the jumper pin position after the server is turned on. This can cause an unpredictable
problem.
The following table describes the functions of the SW3 switch block on the Pass 8
system board.
Table 4. Pass 8 level system board SW3 switch definition
Switch
number
Default position Description
1 Off Clear CMOS memory. When this
switch is toggled to On, it clears the
data in CMOS memory, which clears
the power-on password.
2 Off Reserved.
3 Off Reserved.
4 Off Reserved.
5 Off Power-on password override.
Changing the position of this switch
bypasses the power-on password
check the next time the server is
turned on and starts the Setup utility
so that you can change or delete the
power-on password. You do not have
to move the switch back to the
default position after the power-on
password in overridden.
Changing the position of this switch
does not affect the administrator
password check if an administrator
password is set.
Chapter 2. Installing optional devices
29