Dell S2421H Simplified Service Manual page 5

Use a Philips-head screwdriver to remove 16pcs
screws for unlocking the middle bezel.
S7
(No.1~11 screw size=M3x4, Torque=3~4kgfxcm;
No.12~16 screw size=M2x3.3, Torque=1±0.2kgfxcm)
4
2
8
6
10
14
15
Tear off 1pcs aluminium foil, and then disconnect the
S8
function key cable away from the connector.
Use a Philips-head screwdriver to remove 2pcs
screws for unlocking the bracket with middle bezel,
to remove 2pcs screws for unlocking the bracket
S9
with the panel module.
(No.1~2 screw size=M3x4, Torque=3~4kgfxcm;
No.3~4 screw size=M3x3.5, Torque=2~3kgfxcm )
4
2
Take away the middle bezel. U
screwdriver to remove 3pcs screws for unlocking the
S10
function key board with the middle bezel, and then
tear off the tapes for releasing the key cables.
(No.1~3 screw size=M2x2.4, Torque=0.8±0.2kgfxcm
4. Disassembly and Assembly Procedures
1
3
5
9
7
11
12
16
13
3
1
se a Philips-head
3
Tear off the tape, then lift up the panel module with
S11
the bracket chassis for releasing the front bezel
away from the panel module.
Unplug the LVDS cable from the connector of the
S12
panel module by pushing the earing-locks.
Take away the bracket chassis module and then put
S13
the bracket chassis module on a protective cushion.
2
1