Data General AViiON 4600 Series, Клиентская документация

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Expanding and Maintaining Your Computer System
6-8
014–002091
Avoiding Electrostatic Discharge (ESD)
Damage
When your computer unit top and side panels are installed, they protect the electronic
circuits inside the computer unit from electrostatic discharge (ESD) damage. However,
when you remove the panels from the computer unit to install a subassembly, you can
inadvertently damage the electronic circuits in the computer unit by simply touching
them and discharging any electrostatic charge that has accumulated on your body. This
section contains procedures that you must follow to prevent ESD damage to the
computer unit.
•
Provide enough room to workon the equipment. Clear the worksite of any
unnecessary materials or materials that naturally build up electrostatic charge.
These include plastic foam packaging materials and cups, cellophane wrappers,
and similar materials.
•
Do not remove a subassembly from its antistatic packaging until the exact
moment that you are ready to install it.
•
Gather all the tools, manuals, an ESD kit (an ESD wrist strap shipped with your
computer system), and other materials you will need before you remove covers
and panels from the equipment. The chapters on adding or replacing a
subassembly list required tools and materials at the beginning of the procedures.
After you remove a cover or panel, you should avoid moving away from the work
site; otherwise, you may build up an electrostatic charge.
•
Use an ESD kit when handling a subassembly or when touching the electronic
circuits inside the equipment. (The section on Opening the Computer Unit" in
this chapter tells you how to attach this wrist strap.) If you lose your ESD strap,
you can order an ESD kit from Data General. If an emergency arises and an ESD
kit is not available, follow the procedures in the section Emergency Procedures
(without an ESD kit)."
•
Replace the cover(s) or panels(s) on the equipment as soon as possible so that the
electronic circuits are protected.
Emergency Procedures (without an ESD kit)
In an emergency when an ESD kit is not available, use the following procedures to
reduce the possibility of an electrostatic discharge by ensuring that your body and the
subassembly are at the same electrostatic potential.
CAUTION: These procedures are not a substitute for the use of an ESD kit. Follow
them in the event of an emergency.
•
Before touching any electronic circuits or boards inside the equipment, firmly
touch a bare (unpainted) surface of the equipment.