Dell U4320Q User manual

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
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.
Use a Philips-head screwdriver to remove 4pcs
screws for unlocking mechanisms.
(No.1~4 screw size=M6x12; Torque=9±0.5kgfxcm)
Remove the top cushion foam with all accessories
including QSG, Delta-e paper, user’s manual, DP
cable, HDMI cable, Type-C cable, USB cable, power
cable and other packing materials.(Note: It depends
on whether users returning the accessories)
S2
Remove 4pcs carton locks, then use a proper tool to
open the carton, then uplift and remove the top
paper box carefully.
1 Disassembly Procedures:
S1
Take out the monitor from EPE-bag and put the LCD
monitor on a protective cushion.
23
41
Take out the base and stand from bottom cushion
foam, then take out the packed monitor from the
bottom cushion foam.
S3
S4
S6
S5
S7
1
2
3
4
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DELL U4320Q
Lift the rear cover up carefully. Disconnect the USB
LVDS cable and function key cable from the
connectors of the interface board, and then remove
the rear cover.
power cable
QSG
Type-C cable
HDMI cable
DP cable
USB cable
Delta-E
monitor
base
stand

S12
S11
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DELL U4320Q
Use a Philips-head screwdriver to remove 1pcs
screw for unlocking the USB board unit, then release
the USB board unit and put it aside.
(No.1 screw size=M3x6, Torque=4±0.5kgfxcm)
1
Put the rear cover with function key board into a Jip.
Tear off the mylar tape on the function key board,
then use a Philips-head screwdriver to tighten 3pcs
screws for locking the function key board with the
front bezel.
(No.1~3 Screw size= M2x2.4, Torque=0.8±0.2kgfxcm)
2
6
7
8
53
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
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)
U
U
se a Philips-head screwdriver to remove 2pcs
screws for unlocking the heat-sink. se a Philips-
head screwdriver to remove 26pcs screws for
unlocking the middle bezel, then remove the bezel.
(No.1~28 Screw size= M3x0.5x4, Torque=5±0.5kgfxcm)
1
2
78
9
13
14
15
34 5 6
10
11
12
21
20 19 18 17 16
22
23
24
25
26
28
27
S8
1
2
3
Tear off acetate tape, then disconnect the panel lamp
cables from the connectors of the circuit board.
S9
S10

Use a Philips-head screwdriver to remove
screws for unlocking power board and interface
board.
9pcs
(No.1 screw size=M4x8, Torque=6±0.5kgfxcm;
No.2~6 screw size=M3x7.5, Torque=6±0.5kgfxcm)
Remove the circuit boards from the
disconnect all
of the cables.
bracket
chassis module carefully, and then
S18
Turn over the bracket chassis module. Remove the
Mylar from the hooks of the bracket, and then use a
Philips-head screwdriver to remove screws for
unlocking AC power outlet.
two
(No.1~2 screw size=M3x10, Torque=6±0.5kgfxcm)
S19
S17
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DELL U4320Q
U
.
se a Philips-head screwdriver to remove 4pcs
screws for locking the bracket chassis module with
the panel
(No.1~4 Screw size= M6x12, Torque=9±0.5kgfxcm)
S13
Lift up the bracket chassis, and disconnect the LVDS
cable from the connector of the T-CON board of
panel module, then put the bracket chassis on a
protective cushion.
S14
21
23
4
1
Use a Philips-head screwdriver to remove 2pcs
screws for unlocking the small bracket with T-Con
board, then remove the small bracket.
(No.1~2 Screw size= M3x0.5x4, Torque=3~5kgfxcm)
2
1
S15
Remove 2pcs shading tape on the left and right side
of the panel corner, then remove 32pcs acetate
tapes on the specific positions of the back of panel.
S16
79
6
8
13
452

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DELL U4320Q
Remove electrolyte capacitors (red mark) from
printed circuit boards.
S20
S20-1 Cut the glue between bulk cap. and PCB with a knife.
S20-2 Ensure cutting path within the glue, don’t touch bulk
cap. or PCB.
S20-3 Cut into the bottom of bulk cap. and pullit up
carefully.
S20-4 Take out bulk cap. pin solder with soldering iron and
absorber.
S20-5 Lift the bulk cap. up and away from the PCB.

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DELL U4320Q
The following substances, preparations, or components should be disposed of or
recovered separately from other WEEE in compliance with Article 4 of EU Council
Directive 75/442/EEC.
Capacitors / condensers (containing
PCB/PCT)
No used
Mercury containing components
No used
Batteries
No used
Printed circuit boards (with a surface
greater than 10 square cm)
Product has printed circuit boards (with a
surface greater than 10 square cm)
Component contain toner, ink and
liquids
No used
Plastic containing BFR
No used
Component and waste contain
asbestos
No used
CRT
No used
Component contain CFC, HCFC, HFC
and HC
No used
Gas discharge lamps
No used
LCD display > 100 cm2
Product has an LCD greater than 100 cm2
External electric cable
Product has external cables
Component contain refractory
ceramic fibers
No used
Component contain radio-active
substances
No used
Electrolyte capacitors (height
> 25mm, diameter > 25mm)
Product has electrolyte capacitors (height >
25mm, diameter > 25mm)
3. Tools Required
List the type and size of the tools that would typically can be used to disassemble the
product to a point where components and materials requiring selective treatment
can be removed.
Tool Description:
- Screwdriver (Phillip head) #1
- Screwdriver (Phillip head) #2
- Penknife
- Soldering iron and absorber
Ϯ Product material information