Dell S2421NX Monitor Teardown Instructions
Summary
Disassembly procedure guide for the Dell S2421HN and S2421NX monitors, providing step-by-step teardown instructions with specified screw sizes and torque values (M4x11 at 7-8 kgfxcm, M3x4 at 3-4 kgfxcm, M2x3.3 at 1 kgfxcm). Covers rear cover removal via corner wedge technique, function key cable and panel lamp cable disconnection, middle bezel separation with 16 screws, and front bezel release from panel module. Intended for service technicians performing component-level repairs.
Page 1 Text Content
S2421HN/NX
1. Disassembly Procedures: Use a Philips-head screwdriver to remove 6pcs screws for unlocking mechanisms.
Open the Pizza carton with a proper tool.
S4S1 (No.1~4 screw size=M4x11; Torque=7 8kgfxcm; No.5~6 screw size=M4x8; Torque=7 8kgfxcm)
Take out all of the QSG,accessories including HDMI
cable, power cable, CD&user’s manual, stand base, S2 stand riser and EEI label from the carton. (Note: It Wedge your fingers between the rear cover and the depends on whether users returning the accessories) middle bezel on the corners of the top side of the
monitor to release the rear cover, then use one hand S5 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..
label and paper
power cable
HDMI cable user’s manual
cover
riser
Take out of the molded pulp with base, riser and cover S3 from the carton, then take out the monitor from the EPE bag and put it on a protective cushion.
Tear off 2pcs aluminum foils, and then disconnect the function key cable away from the connector of S6 the board. Disconnect the panel lamp cable away from the connector of panel.
Page Summary Contents For Dell S2421NX Monitor Teardown Instructions
Manual Details
| Brand | Dell |
|---|---|
| Pages | 5 |
| File Size | 1.42 MB |
| Published | June 15, 2026 |
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Frequently Asked Questions
What tools are required for disassembly?
A Philips head screwdriver (#1, #2), a penknife, and a soldering iron with an absorber are needed.
How should I handle component disposal?
Electrolyte capacitors, printed circuit boards (surface > 10 cm²), large LCD displays (> 100 cm²), and external cables must be disposed of separately from other WEEE.
What steps are involved in removing bulk capacitors?
Pin the solder with a soldering iron, cut the glue path using a knife not touching the capacitor or PCB, then lift the bulk cap carefully.
Which cables need careful disconnection?
You must disconnect the function key cable and panel lamp cable away from their connectors before proceeding to tear off internal tapes.