Specifications

Table Of Contents
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Chapter 2
2. Upgrading Baseboard Components
Use the information in this chapter to upgrade or replace components on the system
baseboard(processorboard).Forinformationontoolsneeded,seeChapter 1.For a listof
safety relatedinformation see“Safety: Before You Removethe Access Cover” on page 1.
For acomplete list of warningsand cautions regarding internal power, ESD, and proper
system cooling, be sure to read “Warnings and Cautions” in Chapter 1.
Caution: Installing or removing jumpers: A jumper is a small, plastic-encased
conductor that slips over two jumper pins. Newer jumpers have a small tab on top that
you can grip with your fingertips or with a pair of fine, needle-nosed pliers. If your
jumpers do not have such a tab, take care when using needle-nosed pliers to remove or
installajumper;gripthenarrowsidesofthejumperwiththepliers,neverthewidesides.
Grippingthewide sides can damagethe contacts inside thejumper,causingintermittent
problems with the function controlled by that jumper. Take care to gently grip, but not
squeeze, with the pliers or other tool you use to remove a jumper; you might bend or
break the stake pins on the board.
Baseboard
Use the information in the following sections to remove or install the baseboard.
Removing the Baseboard
Caution: The baseboard can be extremely sensitive to ESD and always requires careful
handling. After removing it from the system, place it component-side UP on a
nonconductive, static-free surface to prevent shorting out the battery leads. If you place
the board on a conductive surface, the battery leads may short out. This will result in a
loss of CMOS data and will drain the battery. Do not slide the baseboard over any
surface.