Mitsubishi Electric apricot VS660, System Product Manual

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5-4
Installing and Configuring System Board Options
Jumper Block Overview
The system board in your computer contains six jumper blocks with
moveable jumpers. The jumpers make it possible to change certain aspects
of the system configuration. For instance, you can prevent access to the
system Setup program by moving one of the jumpers. If you forget your
system password, you can clear the password by moving one of the jumpers.
The system has been properly configured at the factory. Normally, the only
time you will ever change the jumper is if you want to:
•
Disable or enable access to the Setup program
•
Reset the CMOS RAM settings to the default values
•
Clear the system password
•
Change the ISA bus speed
•
Recover from a corrupted BIOS during a BIOS upgrade
Table 5-1 describes the function of the jumper blocks. Figure 5-2 shows the
location of the jumper blocks on the system board. Descriptions of how to
change the jumpers follow Figure 5-2.
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! CAUTIONS
If you change a jumper, you will need to remove the system cover
and possibly add-in boards or other system components. Be sure to
follow the precautions and procedures provided in Chapter 4 when
you remove the cover or other system parts.
Do not squeeze the pliers or other tool you use to remove a jumper,
or you may bend or break the pins.
✏
Notes
A jumper is a small plastic-encased conductor that slips over jumper
pins. To change a jumper setting, use a pair of fine needle-nosed
pliers to remove the jumper from its current location and slide it
onto the new pins to obtain the desired setting.