Dell P2421D Simplified Service Manual

5
S6
3.1Disassembly Procedures
1.1Disassembly Procedures
Turn off power
Unplug external cables from product
Press the button to remove stand from product
Use a Philips-head screwdriver to remove four
screws for unlocking mechanisms.
(No.1~4 screw size=M4x10; Torque: 12±2kgf.cm)
Wedge your fingers between the rear cover and
the middle bezel on the corners of the top side of
the monitor to release the rear cover, then use
Scraper
to separate the rear cover in the below 3direction
of the arrow.
Tear out all the cable to remove the rear cover and
put it on a protective cushion. Use a Philips-head
screwdriver to remove 11 screws for unlocking
the middle plastic bezel with the whole unit, and
then remove the middle plastic bezel carefully.
(No.1~20 screw size=M3x4, Torque=3±0.5kgfxcm)
S1
S2
S3
S4
S5

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