IBM IntelliStation M Pro 6218, Problem Determination And Service Manual

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System-board jumpers
Figure 6 shows the jumper blocks on the system board.
Any jumper blocks on the system board that are not shown in the illustration are
reserved.
Jumper Settings
Boot block (J1)
v
Normal (default): jumper on pins 1 and 2
v Boot block recovery: no jumper; see “Recovering from a BIOS update failure”
on page 55 for more information.
Clear CMOS (JBAT1)
v Keep CMOS data (default): jumper on pins 1 and 2
v Clear CMOS data: jumper on pins 2 and 3 with power cords removed from the
computer; see “Erasing a lost or forgotten password (clearing CMOS)” on page
62 for more information.
IEEE 1394, Firewire (J1394)
v
IEEE 1394 enabled (default): jumper on pins 1 and 2
v
IEEE 1394 disabled: jumper on pins 2 and 3
Boot Block Jumper (J1)
Recover
(no jumper)
Default
(pins 1 and 2))
3 2 1 3 2 1
Clear CMOS Jumper (JBAT1)
Recover Default
3 2 1 3 2 1
IEEE 1394 ( FireWire )
enable / disable jumper
Disable Default
3 2 1 3 2 1
Figure 6. System-board jumpers
Chapter 1. Introduction
9