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Dell U4320Q Simplified Service Manual page 4

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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.
S1
2. Press and hold the stand-release button.
3. Lift the stand up and away from the monitor.
Use a Philips-head screwdriver to remove 4pcs
S2
screws for unlocking mechanisms.
(No.1~4 screw size=M6x12; Torque=9
Wedge your fingers between the rear cover and the
middle bezel on the corners of the top side of the
monitor to release the rear cover, then use one hand
S3
to press the middle bezel, the other hand to pull up
carefully the rear cover in order of arrow preference
for unlocking mechanisms of rear cover.
2
4. Disassembly and Assembly Procedures
0.5kgfxcm)
±
2
3
1
4
3
4
1
Lift the rear cover up carefully. Disconnect the USB
LVDS cable and function key cable from the
S4
connectors of the interface board, and then remove
the rear cover.
Use a Philips-head screwdriver to remove 1pcs
screw for unlocking the USB board unit, then release
S5
the USB board unit and put it aside.
(No.1 screw size=M3x6, Torque=4
1
Use a Philips-head screwdriver to remove 8pcs
screws for unlocking the speakers with middle bezel.
Release the speakers' cables from the hooks of the
S6
middle bezel, and then disconnect the speaker cable
away from the connector of the circuit board.
(No.1~8 screw size=M3x8, Torque=5±0.5kgfxcm)
6
8
5
7
0.5kgfxcm)
±
2
4
3
1

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