Dell S2421H Simplified Service Manual page 4

Necessary repair and test equipment:
1. Philips-head screwdriver
4.1 Disassembly Procedures:
Remove the monitor stand base:
1. Place the monitor on a soft cloth or cushion.
2. Press the stand down to access to the release latch.
S1
3. Use a long screwdriver to press the release latch.
While pressing the release latch, slide out the
stand assembly from the monitor.
To remove the VESA cover: Press the dimple on the
S2
VESA cover to release it from the back of the display.
Use a Philips-head screwdriver to remove 6pcs
screws for unlocking mechanisms.
S3
(No.1~4 screw size=M4x11; Torque=7 8kgfxcm;
No.5~6 screw size=M4x8; Torque=7 8kgfxcm)
Use one hand to press the rear cover, then wedge
your fingers between the rear cover and the middle
S4
bezel on the corners of the top left side to the right
side of the monitor to release the rear cover.
2
4. Disassembly and Assembly Procedures
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2
3
1
4
5
6
1
2
3
Tear off 2pcs acetate tapes and then disconnect the
speaker cable away from the connector. Use a
S5
Philips-head screwdriver to remove 6pcs screws for
unlocking the speakers with middle bezel.
(No.1~6 screw size=M3x8, Torque=5~6kgfxcm)
2
1
3
Tear off 1pcs aluminum foil and then remove the two
S6
speakers. Disconnect the panel lamp cable away
from the connector of the panel module.
4
5
6