DELL U2520DRB
1
1. Disassembly Procedures
Disassemble Rear Cover from
middle frame.
S1
S4
Turn off the monitor.
Place the monitor on a soft cloth along
S2
the desk.
Notice the disassembly order:
1).Disassemble the top side.
1. Removing the monitor stand.
1). Place the monitor on a soft cloth or
cushion.
2). Press and hold the stand release
button.
3). Lift the stand up and away from the
monitor.
2).Disassemble the Left/Right side.
3).Disassemble the bottom side.
Unlock 4 screws on Rear Cover.
S3
(Screw Torque: 11±1kgf)
4).Disassemble Rear Cover from
middle frame.
DELL U2520DRB
3
Tear off the yellow tape from Panel
and disassemble LVDS cable from
Panel.
Remove 4 black tapes from Panel.
S12
S15
Remove long and short backlight
wire from LED Driver BD.
S13
Take off Main SHD from Panel.
S16
Remove 2 tapes which fixed
backlight wire from panel and middle
frame.(See Orange mark)
S14
Remove long and short backlight
wire from panel.
Unlock 1 TP –S screw (See Blue
mark) and disassemble a PANEL
BOSS from Middle Frame.
Unlock 11 screws on Middle frame
S17
Unlock screws on Middle Frame
a. FHP screws*2.(See Green mark)
b. MF BASE screws*3 (See Red
mark)
(Screw Torque: 3.5~4.0kgf)
(TP-S Screw Torque: 6.5±0.5kgf)
(FPH screw and base Screw Torque:
3.5~4.0kgf)
DELL U2520DRB
4
Take off Middle frame from Panel
Remove 3 tapes from panel
Take off Mylar from SPS BD.
S18
S22
Unlock 9 PCBA screws.
S23
Remove 1 Gasket from Middle
Frame
S19
S20
Gasket
(Screw Torque: 8.5±0.5kgf)
Unlock 3 screws on middle frame to
take off Control BD ASSY.
Disassemble LED Driver BD, I/F BD
and SPS BD from Main SHD.
S24
Remove all cables and tapes from
LED Driver BD, I/F BD and SPS BD.
(Screw Torque: 1~1.2kgf)
Tear off Control BD Mylar from
Control BD and take off Control BD
FFC cable.
S21
Unlock 1 Grounding Screw and
disassemble AC wire from Main
SHD.
S25
Unlock 4 screws on Control BD to
disassemble Control BD from Key
Button.
(Screw Torque: 1.4~1.45kgf)
(Screw Torque: 6.5±0.5kgf)
DELL U2520DRB
5
Remove electrolyte capacitors (red mark) from printed circuit boards
S26
S26-1 Cut the glue between bulk cap. and PCB with a knife
S26-2 Ensure cutting path within the glue, don’t touch bulk cap. or PCB
DELL U2520DRB
6
S26-3 Take out bulk cap. pin solder with soldering iron and absorber
S26-4 Lift the bulk cap. up and away from the PCB
DELL U2520DRB
7
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
Batteries
No used
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
Plastic containing BFR
Component and waste contain asbestos
CRT
Component contain CFC, HCFC, HFC and
HC
No used
No used
No used
No used
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
No used
No used
Product has electrolyte capacitors
(height >25mm, diameter > 25mm)
Component contain refractory ceramic fibers
Component contain radio-active substances
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
- Scraper Bar
- Penknife
- Soldering iron and absorber
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