Dell D2721H Servicehandleiding - Pagina 3
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DELL D2721H
Tear off 2 pieces tapes and 3 pieces aluminum
foil (pic.7.1)
S9
Disconnect the backlight cable and LVDS cable
from the connectors of panel(pic.7.2).
Take off the key board from the bezel, then
disconnect the cable from the key board
(pic.7.3).
Pic.7.1
Pic.7.3
S10
Lift up the bracket chassis module and put it
on a protector cushion. Please pay attention
to ESD protection (wear ESD ring and so on).
2
Pic.7.2
Tear off the tape (Pic.10.1).
Use a Philips‐ head/hexagon screwdriver to
S11
remove 7 screws and 2 hexagon screw for
unlocking the main board and power board
(Pic.10.2 and 3).
Please make sure screw driver not touch with
components on board）
(No.1~5+7 screw size=M3x6; Torque=4.5~6.5 kgfxcm
No.8~9 screw size=H4.7x5 (Hexagon screw); Torque=
4~5kgfxcm
S12
Take off the PCB from the shielding cover
and put in on a protector cushion.
Then disconnect cables from the main board
and the power board.
7
Pic.10.1
Pic.10.2
Pic.10.3