DELL P3421W User Manual

Displayed below is the user manual for P3421W by DELL which is a product in the Computer Monitors category. This manual has pages.

Related Manuals

Origin Storage DELL-BDRW-SATA Manual

DELL R820 Manual

DELL P2414H Manual

DELL 1815dn Manual

DELL R7610 Manual

DELL E7240 Manual

DELL 3440 Manual

- 1 -

Service Manual–P3421WB

Version: 01

Date:2021/10/08

- 2 -

Content Index

1. General Safety Instructions ....................................................................................... 3

1.1 SAFETY: General Safety ...................................................................................... 3

1.2 SAFETY: General Power Safety ........................................................................... 5

2. Exploded view diagram with list of items ................................................................. 6

3. Wiring connectivity diagram ...................................................................................... 8

4. How to connect and disconnect power cable/ connectivity cable.......................... 9

5. Disassembly and Assembly Procedures ................................................................. 11

5.1 Disassembly SOP ................................................................................................ 11

5.2. Assembly SOP ................................................................................................... 15

6. Trouble shooting instructions ................................................................................. 18

- 3 -

1. General Safety Instructions

Use the following safety guidelines to help ensure your own personal safety and to help protect your

equipment and working environment from potential damage.

NOTE: In this section, equipment refers to monitors.

IMPORTANT NOTICE FOR USE IN HEALTHCARE ENVIRONMENTS:

Dell products are not medical devices and are not listed under UL or IEC 60601 (or equivalent). As a

result, they must not be used within 6 feet of a patient or in a manner that directly or indirectly

contacts a patient

1.1 SAFETY: General Safety

WARNING: To prevent the spread of fire, keep candles or other open flames away from this product

at all times.

When setting up the equipment for use:

 Place the equipment on a hard, level surface. Leave 10.2 cm (4 in) minimum of clearance on

all vented sides of the computer to permit the airflow required for proper ventilation.

 Restricting airflow can damage the computer or cause a fire.

 Do not stack equipment or place equipment so close together that it is subject to

recalculated or preheated air.

 NOTE: Review the weight limits referenced in your computer documentation before placing

a monitor or other devices on top of your computer.

 Ensure that nothing rests on your equipment's cables and that the cables are not located

where they can be stepped on or tripped over.

 Ensure that all cables are connected to the appropriate connectors. Some connectors have

a similar appearance and may be easily confused (for example, do not plug a telephone

cable into the network connector).

 Do not place your equipment in a closed-in wall unit or on a bed, sofa, or rug.

 Keep your device away from radiators and heat sources.

 Keep your equipment away from extremely hot or cold temperatures to ensure that it is used

within the specified operating range.

 Do not push any objects into the air vents or openings of your equipment. Doing so can

cause fire or electric shock by shorting out interior components.

 Avoid placing loose papers underneath your device. Do not place your device in a closed-in

wall unit, or on a soft, fabric surface such as a bed, sofa, carpet, or a rug.

- 4 -

When operating your equipment:

 Do not use your equipment in a wet environment, for example, near a bath tub, sink, or

swimming pool or in a wet basement.

 Do not use AC powered equipment during an electrical storm. Battery powered devices may

be used if all cables have been disconnected.

 Do not spill food or liquids on your equipment.

 Before you clean your equipment, disconnect it from the electrical outlet. Clean your device

with a soft cloth dampened with water. Do not use liquids or aerosol cleaners, which may

contain flammable substances.

 Clean the monitor display with a soft, clean cloth and water. Apply the water to the cloth,

then stroke the cloth across the display in one direction, moving from the top of the display

to the bottom. Remove moisture from the display quickly and keep the display dry.

 Long-term exposure to moisture can damage the display. Do not use a commercial window

cleaner to clean your display.

 If your equipment does not operate normally - in particular, if there are any unusual sounds

or smells coming from it - unplug it immediately and contact an authorized dealer or service

center.

Protecting Against Electrostatic Discharge

Electrostatic discharge (ESD) events can harm electronic components inside your equipment. Under

certain conditions, ESD may build up on your body or an object, such as a peripheral, and then

discharge into another object, such as your computer. To prevent ESD damage, you should

discharge static electricity from your body before you interact with any of your equipment’s internal

electronic components, such as a memory module. You can protect against ESD by touching a metal

grounded object (such as an unpainted metal surface on your computer’s I/O panel) before you

interact with anything electronic. When connecting a peripheral (including handheld digital assistants)

to your equipment, you should always ground both yourself and the peripheral before connecting it. In

addition, as you work inside the equipment, periodically discharge any static charge your body may

have accumulated.

You can also take the following steps to prevent damage from electrostatic discharge:

 When unpacking a static-sensitive component from its shipping carton, do not remove the

component from the antistatic packing material until you are ready to install the component.

Just before un wrapping the antistatic package, be sure to discharge static electricity from

your body.

 When transporting a sensitive component, first place it in an antistatic container or

packaging.

 Handle all electrostatic sensitive components in a static-safe area. If possible, use antistatic

floor pads and work bench pads.

- 5 -

1.2 SAFETY: General Power Safety

Observe the following guidelines when connecting your equipment to a power source:

 Check the voltage rating before you connect the equipment to an electrical outlet to ensure

that the required voltage and frequency match the available power source.

 Do not plug the equipment power cables into an electrical outlet if the power cable is

damaged

 Norway and Sweden: If this product is provided with a 3-prong power cable, connect the

power cable to a grounded electrical outlet only.

 If you use an extension power cable, ensure that the total ampere rating of the products

plugged in to the extension power cable does not exceed the ampere rating of the extension

cable.

 If you must use an extension cable or power strip, ensure the extension cable or power strip

is connected to a wall power outlet and not to another extension cable or power strip. The

extension cable or power strip must be designed for grounded plugs and plugged into a

grounded wall outlet.

 If you are using a multiple-outlet power strip, use caution when plugging the power cable into

the power strip. Some power strips may allow you to insert a plug incorrectly. Incorrect

insertion of the power plug could result in permanent damage to your equipment, as well as

risk of electric shock and/or fire. Ensure that the ground prong of the power plug is inserted

into the mating ground contact of the power strip.

 Be sure to grasp the plug, not the cable, when disconnecting equipment from an electric

socket.

If your equipment uses an AC adapter:

 Use only the Dell provided AC adapter approved for use with this device. Use of another AC

adapter may cause a fire or explosion.

 NOTE: Refer to your system rating label for information on the proper adapter model

approved for use with your device.

 Place the AC adapter in a ventilated area, such as a desk top or on the floor, when you use

it to run the computer or to charge the battery. Do not cover the AC adapter with papers or

other items that will reduce cooling; also, do not use the AC adapter inside a carrying case.

 The AC adapter may become hot during normal operation of your computer. Use care when

handling the adapter during or immediately after operation.

 It is recommended that you lay the adapter on the floor or desk so that the green light is

visible. This will alert you if the adapter should accidentally go off due to external effects. If

for any reason the green light goes off, disconnect the AC power cord from the wall for a

period of ten seconds, and then reconnect the power cord.

 Japan Only: Use only the Dell-provided AC power cable with the AC adapter. Use of any

other power cable may damage the device or AC adapter or may present risk of fire or

electric shock.

- 6 -

2. Exploded view diagram with list of items

- 7 -

Item Description Q'ty Remark

1 Panel 1

For EMEA Only, not for

other regions

2 ASSY MF 1

3 BOSS PANEL 2

4 SCRW TP-S W/FLM3*9.3L(S3.8)ZN 2

5 SCRW MACH FLATM3*0.5P*4.5L ZN 16

6 PCBA USB BD 1

7 GASKET 1

8 SCRW T FPH M3*6L DELTA-PT NI 1

9 SCRW PH INT/TOO M3*9TP-S C-ZN 10

10 PCBA I/F BD 1

11 PCBA SPS BD 1

12 PCBA LED DRV BD 1

ASSY SHD

14 SCRW MACH PH W/FL M3*3L NI NY 4

PCBA CTRL BD

16 SCRW TP-B FPH M2*4L B-ZN 3

ASSY RC P3421W

18 SCRW FPHM4*10L(7.7/1.6)B-ZNNY 4

ASSY STAND CLMN

20 ASSY STAND BASE 1

MYLAR PWR BD

22 Power cable 1 See “NOTE"

DisplayPort cable

ee “NOTE"

24 HDMI cable 1 See “NOTE"

USB Type

C cable (USB 3.2 Gen1 (5 Gbps))

ee “NOTE"

26 USB 3.2 Gen1 (5 Gbps) upstream cable 1 See “NOTE"

NOTE:

For replacement of power cord, connectivity cable and external power supply (if applicable), contact Dell:

1. Go to https://www.dell.com/support.

2. Verify your country or region in the Choose A Country/Region drop-down menu at the bottom-right

corner of the page.

3. Click Contact Us next to the country dropdown.

4. Select the appropriate service or support link based on your need.

5. Choose the method of contacting Dell that is convenient for you

- 8 -

3. Wiring connectivity diagram

Wire1

FFC 1

FFC 2

Wire2

Wire3

Wire4

- 9 -

4. How to connect and disconnect power cable/ connectivity cable

WARNING: To change power cable/ connectivity cable, switch off power before unplugging the cable

and replugging in required cable.

Connect/ disconnecting the DisplayPort cable and Power cable

Connecting/ disconnecting the HDMI cable and Power cable

- 10 -

Connecting/ disconnecting the USB-TYPE C cable and Power cable

Connecting/ disconnecting the USB 3.2 Gen1 (5 Gbps) cable and Power cable

- 11 -

5. Disassembly and Assembly Procedures

NOTE:

This “Disassembly and Assembly Procedures” is for EMEA only, not for other regions. Please note

that Dell will deem warranty void if any disassembly is done on the monitors.

5.1 Disassembly SOP

Preparation before disassembly

1. Clean the room for work

2. Identify the area for material

3. Prepare the implement, equipment, materials as bellow：

1) Working table

2) Philips-head screwdriver

3) Gloves

4) Cleaning cloth

5) ESD protection

6) Bar Scraper

7) U3415W curve sponge jig

tem

icture

Operation

Tool

Notes

To remove the stand:

1. Place the monitor

on U3415W curve

sponge jig

2. Press and hold

the stand release

button

3. Lift the stand up

and away from the

monitor

U3415W curve

sponge jig

Panel and

whole

monitor head

must be put

on U3415W

curve sponge

jig to avoid

panel

damage.

It is not

allowed to

place the

front side of

panel and

monitor head

on a flat

surface

1. Unlock 4 screws

on rear cover

Philips-head

screwdriver

Torsion of RC

screw: 11±1Kg

- 12 -

1. Use hands or

scraper bar to

disassemble Rear

Cover from the

monitor.

Notice the

disassembly order:

Top Side=>Right/ Left

Side=>Bottom Side

Bar Scraper

1. Pull out CTRL BD

FFC from I/F BD

to take off Rear

Cover

1. Pull out USB FFC

cable from I/F BD

1. Pull out short

backlight wire and

long backlight wire

from LED Driver

- 13 -

1. Unlock 4 screws

to disassemble

Main SHD

(Orange mark)

Philips-head

screwdriver

Torsion of Main

SHD screw:

4.5±0.5 kg

1. Tear off a tape

from EDP cable

2. Pull out EDP

cable from Panel

3. Take off Main

SHD from panel

1. Disassemble

“Mylar PWR BD”

from Main SHD

- 14 -

1. Unlock 10 PCBA

screws to

disassemble I/F

BD, SPS BD and

LED DRV BD

from Main SHD

Philips-head

screwdriver

Torsion of PCB

screw: 9±1Kg

1. Tear off tape from

I/F BD

2. Remove all cables

from I/F BD, SPS

BD and LED

Driver BD

Do not

touch the

component

without

wearing

insulating

gloves

when

disassembli

ng and

assembling

SPS BD

- 15 -

5.2. Assembly SOP

Preparation before assemble

1. Clean the room for work

2. Identify the area for material

3. Prepare the implement, equipment, materials as bellow：

1) Working table

2) Philips-head screwdriver

3) Hex-head screwdriver

4) Gloves

5) Cleaning cloth

6) ESD protection

7) U3415 Curve Sponge Jig

Item

Picture

Operation

Tools

Notes

1. Insert EDP cable to I/F BD

and stick a tape to fix EDP

cable on I/F BD

2. Place I/F BD into Main SHD

3. Connect SPS BD to I/F BD

wire to I/F BD and SPS BD,

then, place SPS BD into

Main SHD

4. Connect SPS BD to LED

Driver BD wire to SPS BD

and LED Driver BD, then,

place LED Driver BD into

Main SHD

Do not

touch the

component

without

wearing

insulating

gloves

when

disassembli

ng and

assembling

SPS BD

1. Lock 10 PCBA screws Philips-

head

screwdrive

Torsion of

PCB

screw:

9±1Kg

- 16 -

1. Assemble “Mylar PWR BD”

on Main SHD

1. Place P3421W panel on

U3415W curve sponge jig

2. Insert EDP cable into Panel

3. Stick a tape on EDP cable to

fix it on Panel

4. Place Main SHD on panel

U3415W

curve

sponge jig

Panel and

whole

monitor head

must be put

on U3415W

curve sponge

jig to avoid

panel

damage.

It is not

allowed to

place the

front side of

panel and

monitor head

on a flat

surface

1. Fix Main SHD with Panel by

screw*4 (Orange mark)

2. Insert short backlight wire

and long backlight wire into

LED Driver BD

Philips-

head

screwdriv

Torsion of

Main SHD

screw:

4.5±0.5 kg

- 17 -

1. Insert USB FFC cable into

I/F BD

1. Insert CTRL BD FFC into I/F

2. Assemble Rear Cover with

Middle Frame

3. Fix Rear Cover by screw *4

Philips-

head

Screwdriv

Torsion of

screw:11±

1Kg

To attach the monitor stand:

1. Insert the stand base blocks

fully into the stand slot

2. Lift the screw handle and

turn the screw clockwise

3. After fully tightening the

screw, fold the screw handle

flat within the recess

Attach the stand assembly to

the display:

a. Fit the two tabs on the upper

part of the stand to the

groove on the back of the

display

b. Press the stand down till it

snaps into place

- 18 -

6. Trouble shooting instructions

- 19 -

- 20 -

- 21 -

- 22 -

- 23 -

- 24 -

- 25 -

- 26 -