Dell C3422WE Manuel utilisateur

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

2nwoD0.3BSU1nwoD0.3BSUCepyTnI2.1PDnI4.1IMDHAC In

Power Board

LED

Driver

Panel 3440*1440

RJ45

Type-B

Speaker

5M camera

Joystic Board

USB3.0

Down4

USB3.0

Down3

USB Board

LED Board

HP/MIC

Touch Board

Interface board

4. Disassembly and Assembly Procedures

4.1 Disassembly Procedures:

Necessary repair and test equipment:

1. Philips-head screwdriver

Remove the monitor stand base:

1. Place the monitor on a soft cloth or cushion.

2. Press and hold the stand-release button.

3. Lift the stand up and away from the monitor.

Use a Philips-head screwdriver to remove 4pcs

screws for unlocking mechanisms. Remove DP cap.

(No.1~4 screw size=M4x11; Torque=11±1kgfxcm)

Wedge your fingers between 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.

Lift the rear cover up carefully. Disconnect the

joystick key cable and two USB cables from the

connectors of the board, and then remove the rear

cover and put it aside for later disassembling.

Use a Philips-head screwdriver to remove 1pcs screw

for unlocking the USB board, then tear off all the tapes

and release the Usb power cable and joystick cable.

(No.1 screw size=M3x6, Torque=4±0.5kgfxcm)

Use a Philips-head screwdriver to remove 2pcs

screws for unlocking the joystick board, then release

the Joystick board from the hook of the rear cover.

(No.1~2 screw size=M2x2.4, Torque=0.8~1kgfxcm)

411

4. Disassembly and Assembly Procedures

S10

S11

S12

Tear off 1pcs acetate tapes and 1pcs aluminum foils

and 3pcs conductive tapes for releasing the cables.

Disconnect the panel lamp cable, LED cable, touch

cable, camera connective cable and speakers’ cable

from the connectors of the board, then release the

panel lamp cables from the hooks of the middle bezel.

Use a Philips-head screwdriver to remove 4pcs

screws for unlocking bracket with panel, to remove

one screw for unlocking the heat-sink.

(No.1~5 screw size=M3x3, Torque=5±0.5 kgfxcm)

Use a Philips-head screwdriver to remove 4pcs

screws for unlocking the speakers with middle bezel,

then release the speakers’ cable from the hooks of

the middle bezel, and then release the two speakers

from the probers of the middle bezel.

(No.1~4 screw size=M3x6, Torque=4±0.5 kgfxcm)

Lift up the bracket chassis module and tear off the

1pcs acetate tape, then disconnect the EDP cable

away from the connector of the panel module, then

put the bracket chassis module on a cushion.

Disconnect the camera cable from away the camera

board, then use a Philips-head screwdriver to

remove one screw for unlocking camera board with

the camera module.

(No.1 screw size=M3x3, Torque=5±0.5 kgfxcm)

Tear off tapes for releasing the camera connective

cable, then use a Philips-head screwdriver to

remove 4pcs screws for unlocking the camera

module, and then remove assembled camera unit

and put it aside for later disassembling.

(No.1~4 Screw size= M3x4, Torque=3.5±0.5kgfxcm)

4. Disassembly and Assembly Procedures

S13

S15

S16

Use a Philips-head screwdriver to remove 21pcs

screws for unlocking the middle bezel unit with the

panel module.

(No.1~21 screw size=M3x4, Torque=5±0.5kgfxcm)

S14

Release the touch board from the middle bezel by

tearing off the tape, and then

middle bezel and put it on a cushion foam.

lift up the LED cable by

tearing off 3pcs tapes on the back of cable. Take

away the

Tear off the camera glass and tape of the camera

connective cable, then use a Philips-head screwdriver

to remove 3pcs screws for unlocking the rear cover

with front cover. Remove the rear cover, and then tear

off the conductive foam and tape for release the cable,

then tear off the camera from the front cover.

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

Put the middle bezel with LED board into a fixture,

then tear off the mylar tape for releasing the LED

board.

10 12

911 1

6518 19 20

Remove the Mylar tape from the brackets by tearing

off the tape on the bracket.

S17

4. Disassembly and Assembly Procedures

S18

S19

Remove the power board and interface board from

the

disconnect all of the cables.

bracket chassis module carefully, and then

Use a Philips-head screwdriver to remove

screws for interface board and power board.

7pcs

(No.1 screw size=M4x8, Torque=7±1kgfxcm;

No.2~7 screw size=M3x7.5, Torque=7±1kgfxcm)

4. Disassembly and Assembly Procedures

Take a interface board, connect 1pcs EDP cable and

1pcs camera cable to the connectors of the interface

board, then connect the cable of the power board to

the connector of the interface board. Turn over the

interface board and locate it into the bracket chassis

module. Use a Philips-head screwdriver to tighten

7pcs screws for locking the interface board and

power board with the bracket chassis module.

(No.1 screw size=M4x8, Torque=7.5±0.5kgfxcm;

No.2~7 screw size=M4x8, Torque=7.5±0.5kgfxcm)

Place a bracket chassis base on a protective

cushion, then stick 3pcs Silicon sheets on the

position as the picture below shown.

4.2 Assembly Procedures:

Panel module preparation: Take out 1pcs panel

module with front bezel from carton, remove the

protective film by tearing off all the tapes of the panel

module, then power on the panel module to examine

the panel surface according to inspection criteria

carefully.

Take 1pcs Dell nameplate, then use a locating fixture

to fix the nameplate to the front bezel of the module,

and then move the whole unit into a laminating

fixture, use the laminating fixture to press the

nameplate with the front bezel of the panel module

firmly attachment.

Turn over a power board and put the power board

into the bracket chassis.

Take a black mylar, tear off 2pcs gum on the back of

the mylar, then paste the mylar on the specific

position of the bracket.

4. Disassembly and Assembly Procedures

S10

S7 Tear off 3pcs gum on the back of the LED cable,

then paste the LED cable on the panel. Take 1pcs

touch board, and tear off the release paper of the

middle bezel, and then paste the touch board on the

correct position of the middle bezel.

Move the middle bezel unit close to the panel

module unit, then assemble the middle bezel unit

with the front bezel and panel module.

S11

Take 1pcs LED board and 1pcs middle bezel with

speaker’s cover unit, then put the middle bezel unit

into a fixture jip. Tear off the release paper on the

back of the LED board, and then paste the LED

board on the correct position of the middle bezel unit,

then paste 1pcs mylar tape to cover the LED board.

Use a Philips-head screwdriver to lock 20pcs screws

for locking the middle bezel unit with the panel module.

(No.1~20 screw size=M3x4, Torque=5±0.5kgfxcm)

Take 1pcs camera, 1pcs front cover of the camera,

1pcs rear cover of the camera,1pcs connective cable

and 2pcs rubbers. Connect the cable with the camera

board, then tear off the gum of the camera, and then

paste the camera on th front cover, then paste 1pcs

foam on the cable. Assemble 2pcs rubbers with the

rear cover, then assemble the rear cover with the unit,

then locate the cable into the hook of the rear cover.

rear cover

front cover

camera

Turn over the panel module to place screen faced

down for later assembling.

S12

10 12

911 1

6518 19 20

4. Disassembly and Assembly Procedures

Use a Philips-head screwdriver to tighten 3pcs

screws for locking the rear cover with front cover,

then tear off the tape paper on the back of the

connective cable, and fix the cable with tape. Paste

1pcs camera glass on the back of the rear cover by

tearing the gum of the tape.

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

S13

Locate the assembled camera unit into the pins of

middle bezel, then use a Philips-head screwdriver to

tighten 4pcs screws

. Tearing off the gum paper of

the connective cable and fix the cable with it.

for locking the camera module

with the middle bezel

(No.1~4 Screw size= M3x4, Torque=3.5±0.5kgfxcm)

S14

Move the bracket close to the panel module, then

connect EDP cable to the connector of the panel

module, then fix the EDP cable with 1pcs acetate

tape. Put down the bracket chassis module on the

back of panel module.

S16

Take a pair of speakers to locate the probers of the

middle bezel, then locate the speakers’ cable to the

hooks of the middle bezel. Use a Philips-head

screwdriver to tighten 4pcs screws for locking the

speakers with middle bezel.

(No.1~4 screw size=M3x6, Torque=4±0.5 kgfxcm)

S15

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