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Appendix A. Working with Electrostatic Discharge-Sensitive
Parts
When holding or installing electrostatic discharge-
sensitive (ESD) parts, use the ESD handling kit
(IBM part 6428316) or similar. Read the
instructions inside the top cover of the carrying
case.
All system logic cards are sensitive to electrostatic
discharge (ESD). To prevent damage to
ESD-sensitive logic cards, follow these
instructions:
• Switch off power to the system or device
before removing logic cards.
• Keep the ESD-sensitive card in the original
shipping container until you install the card in
the machine.
• When holding logic cards, move your body as
little as possible to prevent an increase of
static electricity from clothing fibers, carpet
fibers, and furniture.
• Just before touching the ESD-sensitive card,
discharge any static electricity in your body by
touching the metal frame or cover of the
machine. If possible, keep one hand on the
© Copyright IBM Corp. 1993, 1994
frame when, for example, you are installing or
removing a logic card.
• Hold the ESD-sensitive card by the edge or
connector shroud cover. Do not touch the
pins. If you are removing a field-replaceable
module, use the correct tool.
• Return the card to the special container when
it is not being used. Do not place the
ESD-sensitive card on the machine cover or
on a metal table. Machine covers and metal
tables are electrical grounds. They make a
discharge path from the ESD-sensitive card
through your body to ground, increasing the
risk of damage to the card. Large metal
objects can be discharge paths without being
grounded.
• Prevent ESD-sensitive cards from being acci-
dentally touched by other persons. Reinstall
machine covers when you are not working on
the machine. Do not place unprotected
ESD-sensitive cards on a table.
• Be careful when working with ESD-sensitive
cards during cold weather heating. Cold
weather heating causes low humidity and
increases the risk of static electriCity.
A-1
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