System-Board Jumpers - IBM x3630 M3 7377 Problem Determination And Service Manual

System-board jumpers

This section describes the jumpers on the system board.
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IBM System x3630 M3 Type 7377: Problem Determination and Service Guide
Table 3. System board jumpers
Jumper number
JP2
JP3
Notes:
v If no jumper is present, the server responds as if the pins are set to 1 and 2.
v Changing the position of the UEFI recovery jumper from pins 1 and 2 to pins 2 and 3
before the server is turned on sets the UEFI recovery process. Do not change the jumper
pin position after the server is turned on. This can cause an unpredictable problem.
Jumper name
Clear CMOS jumper
UEFI boot recovery jumper
Jumper setting
v Pins 1 and 2: Normal
(default) - This keeps the
CMOS data.
v Pins 2 and 3: This clears
the CMOS data such as
power-on password and
loads the default UEFI
settings.
v Pins 1 and 2: Normal
(default) Loads the primary
firmware ROM page.
v Pins 2 and 3: Loads the
secondary (backup)
firmware ROM page.