Dell UltraSharp U2422Hb Installation instructions

1 DELL U2422HB_U2422HXB
1. Disassembly Procedures
S1
Turn off power
S2
To remove the stand
Place the monitor on a soft cloth or
cushion
Press and hold the stand release button
Lift the stand up and away from the
monitor
S3
Unlock 4 screws on Rear Cover
Use hands or scraper bar to
disassemble Rear Cover from monitor
Notice t e disassembly order:
Top Side= Right/ Left Side= Bottom
Side
(Screw Torque: 8-10Kgf)
S4
Pull out CTRL BD FFC from I/F BD and
tear off it from Main SHD to take off
Rear Cover
S5
Tear off a tape from CTRL BD FFC and
Rear Cover
Unlock screw*3 to disassemble CTRL
BD from Rear Cover
(Screw Torque: 0.9-1.0Kgf)

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S6
Press on the lock of connector to
disassemble USB FFC from I/F BD
Attention:
USB FFC may be damaged if you pull
out it from I/F BD directly without
pressing the lock
S7
Pull out USB wire from I/F BD
Unlock 2 screws to disassemble USB
BD from Middle Frame
(Screw Torque: 4.5±0.5Kgf)
S8
Pull out USB FFC and USB wire from
USB BD
Take off gasket from USB BD
S9
Tear off a tape from Backlight wire and
panel
Pull out Backlight wire from SPS BD
S10
Disassemble LVDS FFC cable from
Panel
Take off Main SHD from panel

3 DELL U2422HB_U2422HXB
S11
Unlock 14 screws to disassemble
Middle Frame
(Screw Torque: 5.0±0.5Kgf)
S12
Tear off a tape from Backlight wire and
panel
Pull out Backlight wire from panel
S13
Disassemble 5 plastic BOSS from panel
S14
Disassemble mylar from Main SHD
S15
Unlock 8 PCBA screws to disassemble
I/F BD, SPS BD from Main SHD
(Screw Torque: 8.5±1Kgf)
S16
Remove all cables from I/F BD

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S17
Remove electrolyte capacitors (red mark) from printed circuit boards
S17-1 Cut the glue between bulk cap. and PCB with a knife
S17-2 Ensure cutting path within the glue, don’t touch bulk cap. or PCB

5 DELL U2422HB_U2422HXB
S17-3 Take out bulk cap. pin solder with soldering iron and absorber
S17-4 Lift the bulk cap. up and away from the PCB

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2. Product material information
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
- Penknife
- Bar scraper