DELL U2520DR 25 USB-C Monitor User Guide

Disassembly Procedures

S1  Turn n off the monitor.
S2 Place the monitor on a soft cloth along with the desk.

1. Removing the monitor stand.
2. Place the monitor on a soft cloth or cushion.
3. Press and hold the stand release button.
4. Lift the stand up and away from the monitor.

S3 Unlock 4 screws on the Rear Cover.

S4 Disassemble Rear Cover from middle frame.
Notice the disassembly order:

1. Disassemble the top side.
2. Disassemble the Left/Right side.
3. Disassemble the bottom side.
4. Disassemble Rear Cover from the middle frame.

S5 Remove the tape which fixed the USB FFC cable and USB wire on the panel.

S6 Remove USB FFC cable and USB wire from I/F BD.

S7 Tear off the tape from Rear Cover

S8 Unlock a screw-on USB BD and take off USB BD from Rear Cover

S9 Remove USB FFC cable and USB wire from USB BD.

**S10**Remove Sensor BD wire from I/F BD and Sensor BD
Disassemble SENSOR BD from the panel.

S11 Remove Control BD wire from I/F BD

**S12**Remove 4 black tapes from Panel.

813 Remove long and short backlight wire from LED Driver BD.

**814** Remove 2 tapes that fixed backlight wire from the panel and middle frame.(See mark)
Remove long and short backlight wire from the panel.
Unlock 1 TP -S screw (See Blue mark) and disassemble a PANEL BOSS from Middle Frame.
Unlock screws on Middle Frame
a. FHP screws2.(See Green mark)
b. MF BASE screws3 (See Red mark)

(TP-S Screw Torque: 6.5±0.5kg0 (FPH screw and base Screw Torque: 3.5-4.0kgf)
S15 Tear off the yellow tape from Panel and disassemble the LVDS cable from Panel.

S18 Take off Main SHD from Panel.

**817**Unlock 11 screws on the Middle frame

S18 Take off Middle frame from Panel Remove 3 tapes from the panel

S19 Remove 1 Gasket from Middle Frame

S20 Unlock 3 screws on the middle frame to take off Control BD ASSY.

S21 Tear off Control BD Mylar from Control BD and take off Control BD FFC cable.
Unlock 4 screws on Control BD to disassemble Control BD from Key Button.

(Screw Torque: 1.4-1.45kgf)
**S22**Take off Mylar from SPS BD.

**S23** Unlock 9 PCBA screws.

(Screw T Torque: 8.5 5±0.5kgf)

S24 Disassemble LED Driver BD, BD and SPS BD from Main SHD.
Remove all cables and tapes from LED Driver BD. I/F BD and SPS BD.

**S25** Unlock 1 Grounding Screw and disassemble AC wire from Main SHD.

(Screw Torque: 8.5±0.5kgf)

S26 Remove electrolyte capacitors (red mark) from printed circuit boards

S26-1 Cut the glue between bulk caps. and PCB with a knife

S26-2 Ensure cutting path within the glue. don’t touch bulk cap. or PCB

S26-3 Take out the bulk cap. pin solder withholding iron and absorber

S26-4 Lift the bulk ca . u and away from thel3C B

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.

has printed circuit boards (with a surface greater than 10 square cm)
The component contains 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,1-1FC 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 contains refractory ceramic fibers| No used
Component contains radioactive substances| No used
Electrolyte capacitors (height > 25mm, diameter > 25mm)| Product has electrolyte capacitors (height >25mm, diameter > 25mm)

Tools Required

List the type and size of the tools that would typically 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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