Dell D2421H Service Manual

6
4.Mechanical Instruction
1 Disassembly Procedures:
Turn off power
Unplug external cables from product
Remove stand from product: press the
release button, then pull out the stand.
Use plastic picks to wedge from Teardown
hole, release rear cover， then pull up
carefully the rear cover in order of arrow
preference for unlocking mechanisms of rear
cover.
S6
Put it on a protective cushion and remove
the rear cover.
use a Philips‐head screwdriver to remove six screws
for unlocking mechanisms.
(No.1~4 screw size=M4x10; Torque=7.5~8.5kgfxcm
No.5~6 screw size=M3x6; Torque=5~6kgfxcm.)
DELLE2420H
1
S1
S3
S5
S2
S4

Dell D2421H Specifications

General

Screen Size	23.8 inches
Resolution	1920 x 1080 (Full HD)
Panel Type	IPS
Aspect Ratio	16:9
Refresh Rate	60 Hz
Brightness	250 cd/m²
Contrast Ratio	1000:1 (typical)
Color Support	16.7 million colors
VESA Mount	100 x 100 mm
Response Time	5 ms
Viewing Angle	178° (horizontal), 178° (vertical)
Ports	HDMI, VGA