Dell S2721QB, Simplified Service Manual

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1. General Safety Instructions
Use the following safety guidelines to help ensure your own personal safety and to help protect your
equipment and working environment from potential damage.
NOTE: In this section, equipment refers to monitors.
IMPORTANT NOTICE FOR USE IN HEALTHCARE ENVIRONMENTS:
Dell products are not medical devices and are not listed under UL or IEC 60601 (or equivalent). As a
result, they must not be used within 6 feet of a patient or in a manner that directly or indirectly
contacts a patient
1.1 SAFETY: General Safety
WARNING: To prevent the spread of fire, keep candles or other open flames away from this product
at all times.
When setting up the equipment for use:
 Place the equipment on a hard, level surface. Leave 10.2 cm (4 in) minimum of clearance on
all vented sides of the computer to permit the airflow required for proper ventilation.

Restricting airflow can damage the computer or cause a fire.
 Do not stack equipment or place equipment so close together that it is subject to
recalculated or preheated air.
 NOTE: Review the weight limits referenced in your computer documentation before placing
a monitor or other devices on top of your computer.
 Ensure that nothing rests on your equipment's cables and that the cables are not located
where they can be stepped on or tripped over.

Ensure that all cables are connected to the appropriate connectors. Some connectors have
a similar appearance and may be easily confused (for example, do not plug a telephone
cable into the network connector).
 Do not place your equipment in a closed-in wall unit or on a bed, sofa, or rug.

Keep your device away from radiators and heat sources.
 Keep your equipment away from extremely hot or cold temperatures to ensure that it is used
within the specified operating range.
 Do not push any objects into the air vents or openings of your equipment. Doing so can
cause fire or electric shock by shorting out interior components.
 Avoid placing loose papers underneath your device. Do not place your device in a closed-in
wall unit, or on a soft, fabric surface such as a bed, sofa, carpet, or a rug.