Dell E2221HN User Manual

Troubleshooting │ 41
Built-in diagnostics
Your monitor has a built-in diagnostic tool that helps you determine if any screen abnormality
you experience is an inherent problem with your monitor, or with your computer and video card.
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To run the built-in diagnostics:
1. Ensure that the screen is clean (no dust particles on the surface of the screen).
2. Press and Hold Button 1 for about 4 seconds and wait for a pop up menu.
3. Press Button 3 or 4 to select the diagnostic tool and confirm with Button 2.
A gray test pattern appears at the beginning of the diagnostic program.
4. Carefully inspect the screen for abnormalities.
5. Press Button 4 to change the test patterns.
6. Repeat steps 4 and 5 to inspect red, green, blue, black, white and text screens.
7. Press Button 4 to end the diagnostic program.

Dell E2221HN Specifications

General

Panel type	TN
Color gamut	83 %
Pixel pitch	0.2482 x 0.2482 mm
Screen shape	Flat
Pixel density	102 ppi
Backlight type	LED
Display diagonal	21.5 \
Display technology	LCD
Native aspect ratio	16:9
Vertical scan range	56 - 76 Hz
Maximum refresh rate	60 Hz
Horizontal scan range	30 - 83 kHz
Viewable size, vertical	268.11 mm
Viewing angle, vertical	160 °
Display number of colors	16.78 million colors
Display diagonal (metric)	54.68 cm
Viewable size, horizontal	476.64 mm
Viewing angle, horizontal	170 °
Display brightness (typical)	250 cd/m²
Supported graphics resolutions	640 x 480 (VGA), 720 x 400, 800 x 600 (SVGA), 1024 x 768 (XGA), 1152 x 864 (XGA+), 1280 x 1024 (SXGA), 1600 x 900, 1920 x 1080 (HD 1080)
HDMI	Yes
HDMI version	1.4
DisplayPorts quantity	0
Tilt angle range	-5 - 21 °
Panel mounting interface	100 x 100 mm
Input current	0.7 A
AC input voltage	100 - 240 V
Power supply type	Internal
AC input frequency	50 - 60 Hz
Energy efficiency scale	A to G
Power consumption (max)	16 W
Power consumption (off)	0.2 W
Annual energy consumption	35.16 kWh
Power consumption (standby)	0.3 W
Power consumption (typical)	9.7 W
Package weight	4900 g
Operating altitude	0 - 5000 m
Non-operating altitude	0 - 12192 m
Storage temperature (T-T)	-20 - 60 °C
Operating temperature (T-T)	0 - 40 °C
Storage relative humidity (H-H)	5 - 90 %
Operating relative humidity (H-H)	10 - 80 %
Product color	Black
Market positioning	Home
Sustainability certificates	RoHS, ENERGY STAR
Cables included	AC, HDMI
Harmonized System (HS) code	85285210

Weight and Dimensions

Bezel width (top)	17.8 mm
Depth (with stand)	171 mm
Width (with stand)	512.2 mm
Height (with stand)	397.3 mm
Weight (with stand)	3140 g
Depth (without stand)	52.4 mm
Height (without stand)	303.7 mm
Weight (without stand)	2700 g