Dell D2421H Servicehandleiding - Pagina 7

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Dell D2421H Servicehandleiding
DELLE2420H
Tear off 2 pieces of aluminum foil (pic.7.1)
S7
Teardown
the Key board from BEZEL, then
disconnect the keypad cable from the
connectors of the Key board(pic.7.2). Tear off
1 pieces tape, disconnect the backlight cable
from the connectors of the power board and
panel module(pic.7.3).
Pic.7.1
Pic.7.2
Pic.7.3
S8
disconnect the LVDS cable from the connectors of
the main board and panelmodule.
2
Lift up the bracket chassis module and put it
S9
on a protector cushion. Please pay attention
to ESD protection(wear ESD ring and so on).
Turn over the bracket chassis. Use a Philips‐
head/hexagon screwdriver to remove 3 screws(2
S10
bottom side and 1 interface side) and 2 hexagon
screw(the interface side) for unlocking the main
board (Pic.10.1). Tear off the black tape,
disconnect the cable from the connectors of the
main board and power board (pic.10. 3 and 4).
Please make sure screw driver not touch with
components on board）
(No.1~3 screw size=M3x6; Torque=4.5~6.5 kgfxcm
No.4~5 screw size=H4.7x5(hexagon screw); Torque=4~5kgfxcm .)
1
3
27
2
Pic.10.1
4
Pic.10.2
Pic.10.3
Pic.10.4