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Dell S2721DGFA Service Manual page 5

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Tear off all the mylar and tapes, then use a Philips-
S7
head screwdriver to remove 7pcs screws for
releasing the diffuser, reflector and LGP.
5
6
Tear off all the adhesive tapes for releasing the panel
S8
lamp cable, then disconnect the cable away from the
connectors of the power board and panel.
Tear off the mylar tape on the position as the picture
below shown. Use a Philips-head screwdriver to
remove 13pcs screws for unlocking the middle bezel
with the panel module. Use a Philips-head
S9
screwdriver to remove 2pcs screws for unlocking the
middle bezel with the front bezel.
(No.1~13 Screw size= M3x5, Torque=3~4kgfxcm;
No.14~15 Screw size= M2x2.7,Torque=1~2kgfxcm)
4. Disassembly and Assembly Procedures
1
4
2
3
7
Remove the middle bezel and put it into a fixture jip,
then use
a Philips-head screwdriver to remove 1pcs
S10
screw for unlocking the power key board with the
front bezel.
(No.1 Screw size= M2x2.4, Torque=0.8±0.2kgfxcm)
Lift up the panel module and pull out the front bezel
S11
for releasing the front bezel.
U
se a Philips-head screwdriver to remove 4pcs
screws for locking the bracket chassis module with
S12
the panel
.
(No.1~4 Screw size= M3x0.5x2.8, Torque=5~6kgfxcm)
2
1
1
3
4

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