Intel SKA4 Product Manual page 60

WARNINGS
System power on/off: The on/off button (a convex button) on the
front panel DOES NOT turn off the system AC power. To remove
power from system, you must unplug the AC power cords from the wall
outlet or the system.
Hazardous conditions, devices, and cables: Hazardous electrical
conditions may be present on power, telephone, and communication
cables. Turn off the system and disconnect the power cords,
telecommunications systems, networks, and modems attached to the
system before opening it. Otherwise, personal injury or equipment
damage can result.
CAUTIONS
Electrostatic discharge (ESD) and ESD protection: ESD can
damage disk drives, boards, and other parts. We recommend that you do all
procedures in this chapter only at an ESD-protected workstation. If one is
not available, provide some ESD protection by wearing an antistatic wrist
strap attached to chassis groundany unpainted metal surfaceon your
system when handling parts.
ESD and handling boards: Always handle boards carefully. They can
be extremely sensitive to ESD. Hold boards only by their edges. After
removing a board from its protective wrapper or from the system, place it
component-side UP on a grounded, static-free surface. If you place the
baseboard on a conductive surface, the battery leads may short out. If they
do, this will result in a loss of CMOS data and will drain the battery. Use a
conductive foam pad if available but NOT the board wrapper. Do not slide
board over any surface.
Chassis covers, proper cooling, and airflow: For proper cooling and
airflow, always install the chassis access covers before turning on the
system. Operating the system without this cover in place can damage
system parts.
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 install a jumper; grip the narrow sides of
the jumper with the pliers, never the wide sides. Gripping the wide sides can
damage the contacts inside the jumper, causing intermittent 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.
60 SKA4 Baseboard Product Guide