Maintenance Safety Precautions; Hazardous Voltage; Electrostatic Discharge; Safety Rules - NEC Generation N3000 M760s User Manual

Maintenance Safety Precautions

Preface Observe safety rules when working inside the system and when handling computer components. Avoid
electric shock or personal injury by observing the following warning.

Hazardous Voltage

Warning:
before removing the system unit cover, turn off the power and unplug the system
power cable (and remove the main battery in portable computers). Power is removed only when
the power cable is unplugged.

Electrostatic Discharge

Warning:
your computer's internal components are highly susceptible to risk of damage from
electrostatic discharge (static electricity, which occurs naturally on your body due to friction).
To avoid damaging your equipment, always earth yourself to your computer system before
opening the computer's chassis or handling any internal component(s).
To do this, use the following procedure:
1.
For best results, we strongly recommend you purchase
an anti-static wrist strap (available at electronic supply
stores). To use it, connect the strap's metal "alligator
clip" to an unpainted metal portion of your computer's
chassis.
2.
Then connect the elastic wrist band to the strap, and
slide the wrist band onto your wrist.
Note:
if you do not have a wrist strap, you can earth yourself by touching (and maintaining
continuous contact with) an unpainted metal part of the computer's chassis while handling any of
your computer's internal components or working inside the system.

Safety Rules

•
Select a suitable work space
Avoid carpets in cool, dry areas.
When you work on a carpet where static electricity is likely to be generated, make sure you take
anti-static measures beforehand.
•
Cloth
Do not wear a wool or synthetic cloth to work inside the computer.
Wear anti-static shoes to work inside the computer.
Take off any jewels (a ring, bracelet, or wrist watch) before working inside the computer.
•
Handling of components
Keep any component in an anti-static bag until you actually install it to the computer.
Hold a component by its edge to avoid touching any terminals or parts.
© 2007-2009, NEC Computers S.A.S. All rights reserved.
Preface
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