Dell S2719DC Istruzioni per l’uso

Product Announcement:

This product is certificated to meet RoHS

Directive and Lead-Free produced definition.

Using approved critical components only is

recommended when the situation to replace

defective parts. Vender assumes no liability

express or implied, arising out of any unauthorized

modification of design or replacing non-RoHS

parts. Service providers assume all liability.

Qualified Repairability:

Proper service and repair is important to the safe,

reliable operation of all series products. The

service providers recommended by vender should

be aware of notices listed in this service manual in

order to minimize the risk of personal injury when

perform service procedures. Furthermore, the

possible existed improper repairing method may

damage equipment or products. It is recommended

that service engineers should have repairing

knowledge, experience, as well as appropriate

product training per new model before performing

the service procedures.

NOTICE:

! To avoid electrical shocks, the products should be

connected to an authorized power cord, and turn

off the master power switch each time before

removing the AC power cord.

! To prevent the product away from water or

expose in extremely high humility environment.

! To ensure the continued reliability of this

product, use only original manufacturer’s

specified parts.

! To ensure following safety repairing behavior, put

the replaced part on the components side of

PWBA, not solder side.

! To ensure using a proper screwdriver, follow the

torque and force listed in assembly and

disassembly procedures to unscrew screws.

! Using Lead-Free solder to well mounted the

parts.

! The fusion point of Lead-Free solder requested in

the degree of 220°C.

1. Important Safety Notice

2. Exploded view diagram with list of items

3. Wiring Connectivity Diagram

SDC Panel 27" 2560*1440

FK BD

Line Out

USB-C

HDMI1

DC IN

LVDS Signal BL Power

Main Board

4. Disassembly and Assembly Procedures

4.1 Disassembly Procedures:

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..

Put the monitor on a protective cushion. Lift up the

stand , then use a Philips-head screwdriver to remove

2pcs screws for unlocking the whole unit including

stand and base, then remove the stand and base. Use

a Philips-head screwdriver to remove 2pcs screws for

release the hinge cover.

(No.1~2 screw size=M3x11, Torque=7.5±0.5kgfxcm;

No.3~4 screw size=M2x0.4x3.2, Torque=2~3kgfxcm)

Tear off 2pcs double-faced tapes on the left and right

side of the middle bezel, then tear off 2pcs aluminum

foil to release the panel lamp cable and LVDS

connector.

Use a Philips-head screwdriver to remove 2pcs

screws for unlocking the front bezel with the panel

module, and then use a proper tool to disconnect the

panel lamp cable, LVDS cable and function key

board from the connector of the main board.

(No.1~2 screw size=M1.6x2.2, Torque=0.5±0.1kgfxcm)

Necessary repair and test equipment:

1. Philips-head screwdriver

4. Disassembly and Assembly Procedures

Use a Philips-head screwdriver to remove 4pcs

screws for unlocking bracket, move away the bracket

and then remove 1pcs screw for removing the front

bezel carefully.

(No.1~5 screw size=M3x4, Torque=3±0.5kgfxcm)

Use a Philips-head screwdriver to remove 3pcs

screws for unlocking bracket with panel module.

(No.1~3 screw size=M3x2.8, Torque=3±0.5kgfxcm)

Put the front bezel with function key board into a

fixture, tear off the mylar, then use a Philips-head

screwdriver to remove 3pcs screws for unlocking the

function key board with front bezel.

(No.1~3 screw size=M0.2x2.4, Torque=1±0.2kgfxcm)

321

5234

Put the bracket chassis on a protector cushion, then

use a Philips-head screwdriver to remove 4pcs

screws for unlocking the hinge.

(No.1~4 screw size=M3x5.3, Torque=7.5±0.5kgfxcm)

Disconnect the panel lamp cable from the connector

os the panel module, then remove bracket and put it

on a protect cushion for later disassembling. Unplug

the LVDS cable and panel lamp cable from the

connectors of panel module. Tear off the mylar tape

which is sticked on the specific position of the back of

panel, and then use a Philips-head screwdriver to

remove 3pcs screws for unlocking the panel module.

(No.1~3 screw size=M3x2.7, Torque=3~4kgfxcm)

4. Disassembly and Assembly Procedures

Turn over the bracket chassis module. Use a Philips-

head screwdriver to remove 5pcs screws for

unlocking the main board.

(No.1~3 screw size=M3x7.5, Torque=7.5±0.5kgfxcm)

S10

Remove the main board from the

disconnect all

of the cables.

bracket chassis

module by taking out the panel lamp cable from the

hole of the bracket carefully, and then

S11

4. Disassembly and Assembly Procedures

Take a main board and then stick 1pcs Absorption of

foil on the specific position, and connect 1pcs lamp

cable to the connector of the main board, then turn

over the main board and through the lamp cable into

the hole of the bracket, then put the main board into

the bracket chassis. Use a Philips-head screwdriver

to tighten 5pcs screws for locking the main board.

(No.1~5 screw size=M3x7.5, Torque=7~8kgfxcm)

Place a bracket chassis base on a protective

cushion, then stick 2pcs T-PAD on the specific

position of the bracket as the picture below shown.

4.2 Monitor Assembly Procedures:

Stick 1pcs mylar tape on the correct position and then

use a Philips-head screwdriver to tighten 3pcs screws

for locking the panel module, then connect 1pcs LVDS

and 1pcs panel lamp cable into the connectors. Stick

2pcs double-faced tapes on the specific position of the

panel module as the picture below shown.

(No.1~3 screw size=M3x2.7, Torque=3~4kgfxcm)

Panel preparation: Examine the panel surface

according to inspection criteria. Turn over the panel

to place screen faced down on the protective cushion.

Turn over the bracket chassis base and take a Hinge

put on it. Then use a Philips-head screwdriver to

tighten 4pcs screws for locking the Hinge.

(No.1~4 screw size=M3x5.3, Torque=7~8kgfxcm)

Absorption of foil

4. Disassembly and Assembly Procedures

Put the bracket chassis module on the back of panel

module, then connect the panel lamp power to the

connector of the panel module. Stick 2pcs conductive

on the specific position of the panel.

Move the front bezel with function key board close to

the panel module, lift up the panel and assemble

front bezel unit with the panel module. Use a Philips-

head screwdriver to tighten 1pcs screw for locking

front bezel with panel module.

(No.1 screw size=M3x4, Torque=3±0.5kgfxcm)

Take 1pcs front bezel, 1pcs power key lens, 1pcs

function key lens, assemble the power key lens and

function key lens to the correct positions of the front

bezel. Take 1pcs function key board, assemble the

function key board with the front bezel to through the

hole of the front bezel. Take a fixture to locate the

front bezel with the function key board, then use a

Philips-head screwdriver to tighten 3pcs screws for

locking the function key board with front bezel, then

stick a mylar tape to cover the function key board.

(No.1~3 screw size=M0.2x2.4, Torque=1±0.2kgfxcm)

Use a Philips-head screwdriver to tighten 3pcs

screws for locking bracket with panel module, then

use a proper tool to connect the LVDS cable, panel

lamp cable and function key cable to the connectors

of the main board.

(No.1~3 screw size=M3x2.8, Torque=3±0.5kgfxcm)

32 1

5234

Adjust the bracket to make it with the panel module

firmly attachment. Use a Philips-head screwdriver to

tighten 4pcs screws for locking bracket with front

bezel and panel module.

(No.2~5 screw size=M3x4, Torque=3±0.5kgfxcm)

S10

4. Disassembly and Assembly Procedures

Take a hinge cover to assemble it with the hinge, then

use a Philips-head screwdriver to tighten 2pcs screws

for locking the hinge cover with the hinge. Take a

stand to assemble with the hinge, then use a Philips-

head screwdriver to tighten 2pcs screws for locking

the stand with the hinge.

(No.1~2 screw size=M2x0.4x3.2, Torque=2~3kgfxcm;

No.3~4 screw size=M3x11, Torque=7.5±0.5kgfxcm)

S14

Use a Philips-head screwdriver to tighten 2pcs screws

for locking the front bezel with the panel module.

(No.1~2 screw size=M1.6x2.2, Torque=0.5±0.1kgfxcm)

S11

Stick 1pcs aluminum foil to cover the LVDS

connector, then stick 1pcs aluminum foil on the

specific position to fix the bracket chassis module.

Tear off 2pcs protective papers of double-faced tapes

on the left-top and right-top of the middle bezel as the

picture below shown.

S12

Take a rear cover, tear off the gum on the inside of

the rear cover, put down the rear cover on the

assembled unit carefully and push the rear cover on

the positions marked for two parts engagement.

S13

Take a base to assemble it with stand, then use a

Philips-head screwdriver to tighten 3pcs screws for

locking the stand with base. Take 1pcs decoration

strip, tear off the adhesive paper and stick it on the

correct position as the picture below shown.

(No.1~3 screw size=M4x8, Torque=11±0.5kgfxcm)

S15

Lift up the monitor to checking the gap, then provide

power supply and a video signal to the monitor , then

turn on the monitor for functionality check.

S16

4. Disassembly and Assembly Procedures

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