Dell U2722D Manual

1
DELL U2722D/DX
Use a Philips-head screwdriver to remove 4pcs
screws for unlocking mechanisms. Remove DP cap.
(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
Wedge your 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
carefully the rear cover in order of arrow preference
for unlocking mechanisms of rear cover.
S6
S7
3
2
1
2
Lift the rear cover up carefully. Disconnect the
joystick key cable and Usb EDP cable from the
connectors of the interface board, and then remove
the rear cover.
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
23
41
base
Delta_E paper
QSG
USB A to C cable
DP cable
power cable
USB C to C cable manual
monitor
stand
1
2

2DELL U2722D/DX
S14
S10
Use a Philips-head screwdriver to release one screw
for unlocking the USB board, then release the USB
board from the hooks of the middle bezel and then
remove the USB board unit.
(No.1screw size=M3x6, Torque=4±0.5kgfxcm)
S11
S9
1
Tear off 1pcs aluminum foil for unfixing the bracket,
and then disconnect the LED cable from the
connector of the interface board.
Use a Philips-head screwdriver to remove 13pcs
screws for unlocking the middle bezel with the panel
module.
(No.1~13 screw size=M3x5, Torque=5±0.5kgfxcm)
3
11 10
13 12
8
2
9
4
5761
Disconnect the panel lamp from the connector of the
panel, then release the panel lamp cable from the
hooks of the middle bezel.
S12
Tear off the tape on the back of panel module for
releasing the LED cable, then
middle bezel, and put it on a cushion foam, and then
tear off the mylar tape for releasing the LED board.
lift up and take away the
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)
4
1
11

3
DELL U2722D/DX
S15
S16
Use a Philips-head screwdriver to remove
screws for interface board and power board.
6pcs
(No.1 screw size=M4x8, Torque=7±1kgfxcm;
No.2~6 screw size=M3x7.5, Torque=7±1kgfxcm)
S18
Remove the power board board and interface
board from the
disconnect all of the cables.
bracket chassis module carefully,
and then
Remove the Mylar tape from the hooks of the
bracket.
S17
S19
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.
1
3
4
2
65

4DELL U2722D/DX
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.
S20-4 Take out bulk cap. pin solder with soldering iron and
absorber.
S20-5 Lift the bulk cap. up and away from the PCB.
S20-3 Cut into the bottom of bulk cap. and pullit up
carefully.

5
DELL U2722D/DX
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