Dell P2421D Service Manual

3
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.
When operating your equipment:
 Do not use your equipment in a wet environment, for example, near a bath tub, sink, or swimming
pool or in a wet basement.
 Do not use AC powered equipment during an electrical storm. Battery powered devices may be used

Dell P2421D Specifications

General

3D	No
Pixel pitch	0.2058 x 0.2058 mm
Screen shape	Flat
Pixel density	123 ppi
Response time	8 ms
Backlight type	LED
Display diagonal	23.8 \
Display technology	LCD
Native aspect ratio	16:9
Vertical scan range	49 - 75 Hz
Maximum refresh rate	60 Hz
Response time (fast)	5 ms
Horizontal scan range	29 - 113 kHz
Supported video modes	480i, 480p, 576i, 576p, 720p, 1080i, 1080p, 1440p
Viewable size diagonal	604.5 mm
Viewable size, vertical	296.35 mm
sRGB coverage (typical)	99 %
Display number of colors	16.78 million colors
Viewable size, horizontal	526.85 mm
Display brightness (typical)	300 cd/m²
Supported graphics resolutions	2560 x 1440
Pivot angle	-90 - 90 °
Tilt angle range	-5 - 21 °
Panel mounting interface	100 x 100 mm
Doesn't contain	PVC
Sustainability certificates	RoHS, ENERGY STAR
USB hub version	2.0 / 3.2 Gen 1 (3.1 Gen 1)
DisplayPort version	1.2
VGA (D-Sub) ports quantity	0
USB Type-A downstream ports quantity	4
On/off switch	-
Cables included	DisplayPort, USB
Input current	1.6 A
AC input voltage	120 - 230 V
AC input frequency	50 - 60 Hz
Energy efficiency scale	A to G
Power consumption (max)	55 W
Power consumption (standby)	0.2 W
Power consumption (typical)	16.9 W
Operating altitude	0 - 5000 m
Non-operating altitude	5000 - 12192 m
Storage temperature (T-T)	-20 - 60 °C
Operating temperature (T-T)	0 - 40 °C
Operating relative humidity (H-H)	10 - 90 %
Product color	Black
Market positioning	Business
Package depth	617.98 mm
Package width	165.1 mm
Package height	393.95 mm
Package weight	7290 g
Harmonized System (HS) code	85285210

Weight and Dimensions

Bezel width (top)	5.4 mm
Bezel width (side)	5.5 mm
Height (with stand)	356.1 mm
Bezel width (bottom)	20.3 mm
Depth (without stand)	166 mm
Width (without stand)	537.8 mm
Height (without stand)	322.1 mm
Weight (without stand)	3370 g