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4
D el l Pr e c is ion ™ Mo bi l e Wo r k s t a t i on M4 0 Syst em In for m a t i o n
Safety and EMC Instructions: Mobile
Workstation Computers
The following information defines the meaning of symbols used in the
Safety and Electromagnetic Compatibility (EMC) Instructions.
Attention: Caution
Risk of explosion
Risk of fire
Safety Instructions
General
•
Do not attempt to service the computer yourself unless
you are an authorized service technician. Always follow
installation instructions closely.
•
If you use an extension power cable with your AC
adapter, ensure that the total ampere rating of the
products plugged in to the extension power cable does
not exceed the ampere rating of the extension cable.
•
Do not push objects into air vents or openings of your
computer. Doing so can cause fire or electric shock by
shorting out interior components.
•
Place the AC adapter in a ventilated area, such as a desk
top or on the floor, when you use it to run the computer
or to charge the battery. Do not cover the AC adapter
with papers or other items that will reduce cooling; also,
do not use the AC adapter inside a carrying case.
Risk of electric shock
Aircraft
Use of this feature may be prohibited
on aircraft
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