DELL S2721DB User Manual

DELL S2721DB  
1
1. Disassembly Procedures  
Unlock 2 Stand screws  
S1  
S5  
Turn off the monitor.  
Unlock 4 screws on Rear Cover  
Place the monitor on a soft cloth or  
cushion.  
S2  
Press the dimple on the VESA cover to  
release it from the back of the display.  
(Screw Torque: RC screw: 8.5±1.0kgf  
Stand screw: 4~5kgf)  
Using a long screwdriver, push the  
release latch located in the gap just  
above the stand.  
S3  
Follow the sequence to disassemble  
Rear Cover from the monitor  
S6  
Tear off all adhesive tapes from  
backlight wire and SPK wire  
Once the latch is released, slide the  
stand assembly away from the monitor  
S7  
S4  
DELL S2721DB  
3
Pull out FFC LVDS from the Panel  
Disassemble CTRL BD from OSD BTN  
S13  
S17  
Take off Main SHD from Panel  
Disassemble Middle Frame and “ASSY  
DECO” from panel  
Disassemble Safety Mylar from SPS  
BD  
S18  
Unlock 2 screws on CTRL BD  
S14  
Disassemble the little Mylar from Main  
SHD  
S19  
S20  
(Screw Torque: 1.5~2.5kgf)  
Unlock 8 PCBA screws  
Tear off CTRL BD FFC from Middle  
Frame  
S15  
S16  
Disassemble I/F BD & SPS BD from  
Main SHD  
Disassemble CTRL BD FFC from CTRL  
BD  
(Screw Torque: 6~7kgf)  
Pull out FFC eDP from the I/F BD  
S21  
DELL S2721DB  
Remove electrolyte capacitors (red mark) from printed circuit boards  
4
S22  
S22-1 Cut the glue between bulk cap. and PCB with a knife  
DELL S2721DB  
5
S22-2 Ensure cutting path within the glue, don’t touch bulk cap. or PCB  
S22-3 Take out bulk cap. pin solder with soldering iron and absorber  
S22-4 Lift the bulk cap. up and away from the PCB  
DELL S2721DB  
6
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  
Gas discharge lamps  
No used  
No used  
No used  
No used  
No used  
No used  
Product has an LCD greater than 100  
cm2  
LCD display > 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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