System-Board Switches And Jumpers - IBM x3250 M3 Problem Determination And Service Manual

System-board switches and jumpers

The following illustration shows the jumpers on the system board.
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IBM System x3250 M3 Types 4251, 4252, and 4261: Problem Determination and Service Guide
Table 2. System board jumpers
Jumper number
JP1
JP6
Jumper name
Clear CMOS jumper
Boot block jumper
Jumper setting
v Pins 1 and 2: Keep CMOS
data (default).
v Pins 2 and 3: Clear CMOS
data (including power-on
password)
v Pins 1 and 2: Boot from
primary BIOS page
(default).
v Pins 2 and 3: Boot from
backup BIOS page.