Dell S2721HGF User manual

USB cable

power cable

User’s manual

DP cable

Wedge your fingers between the rear cover and the

middle bezel on the corners of the top side of the

monitor to release the rear cover, then use one hand

to press the middle bezel, the other hand to pull up

carefully the rear cover in order of arrow preference

for unlocking mechanisms of rear cover.

Use a Philips-head screwdriver to remove four

screws for unlocking mechanisms.

(No.1~4 screw size=M4x8; Torque=10~11kgfxcm)

Take out all accessories including QSG, user’s

manual, DP cable, USB cable, power cable and

other packing materials from the carton.(Note: It

depends on whether users returning the

accessories)

Open the carton with a proper tool.

Take out the monitor from EPE-bag and put the LCD

monitor on a protective cushion.

Take out the base and molded pulp from the carton.

base

DELL S2721HGF

Lift the rear cover up carefully. Disconnect the

function key cable and power key cable from the

connectors of the interface board, and then remove

the rear cover.

monitor

stand

1. Disassembly Procedures:

S10

DELL S2721HGF

S11

S13

Put the rear cover on a protective cushion. Use a

Philips-head screwdriver to remove 4pcs screws for

unlocking the function key board with the rear cover.

Tear off the key tapes and release the function key

board from the hook of the rear cover.

(No.1~4 screw size=M2x0.2, Torque=0.8±0.2kgfxcm)

Use a Philips-head screwdriver to remove 6pcs

screws for unlocking the middle bezel with the front

bezel. Use a Philips-head screwdriver to remove

13pcs screws for unlocking the middle bezel with the

panel module. tear off 2pcs tapes of the power cable.

(No.1~6 Screw size=M2x3.8,Torque=3±0.5kgfxcm;

No.7~19 Screw size=M3x5, Torque=3~4kgfxcm)

S12

Tear off all the adhesive tapes for releasing the panel

lamp cable, then disconnect the panel cable away

from the connector of the panel module.

se a Philips-head screwdriver to remove 4pcs

screws for locking the bracket chassis module with

the panel

(No.1~4 Screw size= M3x0.5x2.8, Torque=5~6kgfxcm)

Move the bracket, and then disconnect the LVDS

cable and panel lamp cable from the connectors of

the panel module, then lift up the bracket and put it

on a protective cushion.

Remove the circuit boards from the

disconnect all

of the cables.

bracket

chassis module carefully, and then

S18

Use a Philips-head screwdriver to remove

screws for unlocking power board and interface

board, and then release the panel lamp cable from

the hook of the bracket.

6pcs

(No.1 screw size=M4x8, Torque=6±0.5kgfxcm;

No.2~7 screw size=M3x7.5, Torque=6±0.5kgfxcm)

S17

Turn over the bracket chassis module. Remove the

Mylar from the hooks of the bracket.

S16

DELL S2721HGF

Lift up the panel module and pull out the front bezel

for releasing the front bezel.

S15

Remove the middle bezel and put it into a fixture jip,

then tear off the black PVC tape and use a Philips-

head screwdriver to remove 1pcs screw for unlocking

the power key board with the front bezel.

(No.1 Screw size= M2x2.4, Torque=0.8±0.2kgfxcm)

S14

DELL S2721HGF

Remove electrolyte capacitors (red mark) from

printed circuit boards.

S19

S19-1 Cut the glue between bulk cap. and PCB with a knife.

S19-2 Ensure cutting path within the glue, don’t touch bulk

cap. or PCB.

S19-4 Take out bulk cap. pin solder with soldering iron and

absorber.

S19-5 Lift the bulk cap. up and away from the PCB.

S19-3 Cut into the bottom of bulk cap. and pullit up

carefully.

DELL S2721HGF

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 (Phillip head) #1

- Screwdriver (Phillip head) #2

- Penknife

- Soldering iron and absorber

2. Product material information

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