Dell S2721DSB Manual

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1. Disassembly Procedures
S1
Turn off the monitor.
S2
Place the monitor on a soft cloth or
cushion.
Press and hold the stand release button
at the back of the display.
Lift the stand assembly up and away
from the monitor.
S3
Unlock 4 screws on Rear Cover
( crew Torque: 8.5±1.0kgf)
S4
Follow the sequence to disassemble
Rear Cover from the monitor
S5
Tear off all adhesive tapes from
backlight wire and PK wire
S6
Unlock 6 PK screws
Pull out PK wire from I/F BD
Disassemble PK from Middle Frame
( crew Torque: 4~6kgf)

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S7
Tear off AL Tape
Pull out CTRL FFC from I/F BD
Pull out backlight wire from P BD
and Panel
( crew Torque: 6~7kgf)
S8
Unlock 6 “A Y DECO” screws
( crew Torque: 1.5~2.5kgf)
S9 Unlock 11 MF screws
( crew Torque: 4~5kgf)
S10
Unlock 4 Main HD screws
( crew Torque: 6~7kgf)
S11
Pull out FFC LVD from the Panel
Take off Main HD from Panel
Disassemble Middle Frame and “A Y
DECO” from panel

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S12
Unlock 2 screws on CTRL BD
( crew Torque: 1.5~2.5kgf)
S13
Tear off CTRL BD FFC from Middle
Frame
S14
Disassemble CTRL BD FFC from CTRL
BD
S15
Disassemble CTRL BD from O D BTN
S16
Disassemble afety Mylar from P
BD
S17
Disassemble the little Mylar from Main
HD
S18
Unlock 8 PCBA screws
Disassemble I/F BD & P BD from
Main HD
( crew Torque: 6~7kgf)
S19
Pull out FFC eDP from the I/F BD

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S20
Remove electrolyte capacitors (red mark) from printed circuit boards
20-1 Cut the glue between bulk cap. and PCB with a knife

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20-2 Ensure cutting path within the glue, don’t touch bulk cap. or PCB
20-3 Take out bulk cap. pin solder with soldering iron and absorber
20-4 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 c
ontain 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
- Scraper Bar
- Penknife
- Soldering iron and absorber