DELL S2421NX Monitor Teardown Instructions
- June 6, 2024
- Dell
Table of Contents
S2421HN/NX
Disassembly Procedures:
S1 Open the Pizza carton with a proper tool.
S2
Take out all of the accessories including QSG, HDMI cable, power cable,
CD&user’s manual, stand base, stand riser, and EEI label from the carton.
(Note: It depends on whether users returning the accessories)
S3
Take out of from the carton, then take out the monitor from the EPE bag and
put it on a protective cushion. molded pulp with base, riser, and cover
S4
Use a Philips-head screwdriver to remove 6pcs screws for unlocking
mechanisms.
(No.1~4 screw size=M4x11; Torque=7 8kgfxcm;
No.5~6 screw size=M4x8; Torque=7 8kgfxcm)
S5
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 one hand to
press the middle bezel, the other hand to pull up carefully the rear cover in
order of arrow preference for unlocking mechanisms of rear cover.
S6
Tear off 2pcs aluminum foils, and then disconnect the function key cable
away from the connector of the board. Disconnect the panel lamp cable away
from the connector of the panel.
S7
Use a Philips-head screwdriver to remove 16pcs screws for unlocking the
middle bezel.
(No.1~11 screw size=M3x4, Torque=3~4kgfxcm;
No.12~16 screw size=M2x3.3, Torque=1±0.2kgfxcm)
S8
Use a Philips-head screwdriver to remove 2pcs screws for unlocking the
bracket with middle bezel, to remove 2pcs screws for unlocking the bracket
with panel module.
(No.1~2 screw size=M3x4, Torque=3~4kgfxcm;
No.3~4 screw size=M3x3.5, Torque=2~3kgfxcm )
S9
Take away the middle bezel, and put it on a fixture.
Use a Philips-head screwdriver to remove 3pcs tear off the tapes for screws
for unlocking the function key board with the middle bezel, and then releasing
the key cables.
(No.1~3 screw size=M2x2.4, Torque=0.8±0.2kgfxcm
S10
Lift up the panel module with the bracket chassis for releasing the front
bezel away from the panel module, and then tear off the tape.
S11
Unplug the LVDS cable from the connector of the panel module by pushing the
earing locks.
S12
Take away the bracket chassis module and then put the bracket chassis
module on a protective cushion.
S13
Remove the Mylar from the hooks of the bracket chassis module.
S14
Use a Philips-head screwdriver to remove 5pcs screws for unlocking the
circuit board, release all the cables from the hooks.
(No.1 screw size=M4x8, Torque=6±0.5kgfxcm;
No. 2~5 screw size=M3x7.5, Torque=6±0.5kgfxcm)
S15
Remove the interface board and power board from the bracket chassis module
carefully, and disconnect all the cables.
S16
Remove electrolyte capacitors (red mark) from printed circuit boards.
S16-1 Cut the
glue between bulk caps. and PCB with a knife.
S16-2 Ensure
cutting path within the glue, don’t touch bulk cap. or PCB.
S16-3 Cut into
the bottom of the bulk cap. and pull it up carefully.
S16-4 Take out
the bulk cap. pin solder with soldering iron and absorber.
S16-5 Lift the
bulk cap. up and away from the PCB.
Product material information
The following substances, preparations, or components should be disposed of or recovered separately from other WEEE in compliance with Article 4 of EU Council Directive 75/442/EEC.
| Capacitors / condensers (containing PCB/PCT) | No used |
|---|---|
| Mercury-containing components | No used |
| Batteries | No used |
| Printed circuit boards (with a surface greater than 10 square cm) | The product |
has printed circuit boards (with a surface greater than 10 square cm)
The component contains toner, ink, and liquids| No used
Plastic containing BFR| No used
Component and waste contain asbestos| No used
CRT| No used
Component contain CFC, HCFC, HFC and HC| No used
Gas discharge lamps| No used
LCD display > 100 cm2| The product has an LCD greater than 100 cm2
External electric cable| The product has external cables
The component contains refractory ceramic fibers| No used
The component contains radioactive substances| No used
Electrolyte capacitors (height > 25mm, diameter > 25mm)| Product has
electrolyte capacitors (height > 25mm, diameter > 25mm)
Tools Required
List the type and size of the tools that would typically be used to
disassemble the product to a point where components and materials requiring
selective treatment can be removed.
Tool Description:
– Screwdriver (Phillip’s head) #1
– Screwdriver (Phillip’s head) #2
– Penknife
– Soldering iron and absorber