Dell U3223QE User manual

1
DELL U3223QE
Use a Philips-head screwdriver to remove 4pcs
screws for unlocking mechanisms. Remove DP caps.
(No.1~4 screw size=M4x11; Torque=11±1kgfxcm)
Take out all accessories including label(optinal), QSG,
Delta-E paper, DP cable, USB C to C cable(Type-C
cable), USB A to C cable(USB cable), power cable,
manual from the carton. (Note: It depends on whether
users returning the accessories)
S2
Open the carton with a proper tool.
1. Disassembly Procedures:
S1
Take out the monitor from EPE-bag and put the LCD
monitor on a protective cushion.
Take out the paper top with base from the carton,
then take out the monitor and stand from the carton.
S3
S4
S5
S6
S7
3
2
1
2
Lift the rear cover up carefully. Disconnect the
joystick key cable from the connector of the interface
board, and then remove the rear cover and put it
aside for later disassembling.
Use a Philips-head screwdriver to remove 2pcs
screw for unlocking the key board, then tear off the
tapes and release the key board.
(No.1~2 screw size=M2x2.4, Torque=0.8~1kgfxcm)
S8
base
monitor
stand
1
2
23
41
Delta_E paper
QSG
USB A to C cable
DP cable
power cable
USB C to C cable
manual
Tear off the screen protector, then wedge fingers
between 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 the rear cover in order
of arrow preference for unlocking the rear cover.

2DELL U3223QE
S14
S10
Use a Philips-head screwdriver to release one screw
for unlocking the USB board, and disconnect the two
cables, then release the USB board from the hooks
of the middle bezel.
(No.1screw size=M3x6, Torque=4±0.5kgfxcm)
S11
S9
Tear off 1pcs aluminum foil for unfixing the bracket,
then tear off 1pcs acetate tape for uncovering the
LVDS connector .
Use a Philips-head screwdriver to remove
18(13+5)pcs screws for unlocking the middle bezel
with the panel module.
(No.1~13 screw size=M3x5, Torque=5±0.5kgfxcm;
No.13~18 screw size=M3x4.5, Torque=5±0.5kgfxcm)
Disconnect the two panel lamp cables from the
connectors of the panel. Disconnect the LED cable
from the connector of the interface board.
S12
Tear off the tape on the middle bezel for releasing the
LED cable, and then tear off the mylar tape to release
the LED board for the hooks of the middle bezel.
S13
U
.
se a Philips-head screwdriver to remove 4pcs
screws for unlocking the bracket chassis module
with the panel
(No.1~4 Screw size= M3x5, Torque=5±0.5kgfxcm)
1
13
18 16
15 17
10
2
12
4
11
761
5 8 9
3
14
4
1
11
Lift up the middle bezel, and then put it on a cushion
foam for later disassembling.
S15

3
DELL U3223QE
Use a Philips-head screwdriver to remove
screws for interface board and power board.
8pcs
(No.1 screw size=M4x8, Torque=7±1kgfxcm;
No.2~8 screw size=M3x7.5, Torque=7±1kgfxcm)
S19
Remove the power board board and interface
board from the
disconnect all of the cables.
bracket chassis module carefully,
and then
Release the panel lamp cables from the hooks of the
bracket, then remove the Mylar tape from the hooks
of the bracket.
S18
S20
Move up the bracket, then push the earing-lock and
disconnect the LVDS cable away from the connectors
of the panel module.
Take away the bracket chassis module and then put
the bracket chassis module on a protective cushion.
S16
S17 1
3
4
2
6
8
75

4DELL U3223QE
Remove electrolyte capacitors (red mark) from
printed circuit boards.
S21
S21-1 Cut the glue between bulk cap. and PCB with a knife.
S21-2 Ensure cutting path within the glue, don’t touch bulk
cap. or PCB.
S21-4 Take out bulk cap. pin solder with soldering iron and
absorber.
S21-5 Lift the bulk cap. up and away from the PCB.
S21-3 Cut into the bottom of bulk cap. and pullit up
carefully.

5
DELL U3223QE
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
2. Product material information