Dell P2319H Instructions for use

Version: 01
Date: 2021/10/29
Service Manual - P2319H

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
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.
Item Description Q'ty Remark
1 1
For EMEA Only, not for
other regions
2
Power BD
1
13
4 1
15
6
Interface BD
1
1 7
8 1
9
10
11 1
112
1 13
1 14
Function key BD
Front trim
ASSY Middle Frame
Chassis Mylar
Main Chassis ASSY
1
1
15 1
1
USB BD
16
See “NOTE”
See “NOTE”
Riser ASSY
Base ASSY
Back cover
Panel
1 17
See “NOTE”
See “NOTE”
See “NOTE”
USB 3.0 upstream cable
VGA cable (Japan Only)
HDMI 1.4 cable (Brazil Only)
Power cable
DisplayPort cable
13 14 15 16 17

3. Wiring Connectivity Diagram

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.
Power Button

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

5. Disassembly and Assembly Procedures
5.1 Disassembly Procedures:
Tool 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
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.
S1
S1
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.
S2
S3
Use a Philips-head screwdriver to remove 4pcs
screws for unlocking mechanisms. Remove DP cap.
(No.1~4 screw size=M4x10; Torque=12±0.5kgfxcm)
2
3
23
41
3
1
2
4
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..
S6
S5
S4
S7
Lift the rear cover up carefully. Disconnect the USB
FFC cable from the connector of the interface board,
and then remove the rear cover.
Tear off two pieces of the aluminium foils for unfixing
the bracket chassis base.
Use a Philips-head screwdriver to remove one screw
for unlocking the USB board unit, then release the
USB board unit and put it aside.
(No.1 screw size=M3x6, Torque=4±0.5kgfxcm)
Unplug the panel power cable from the connector of
the panel module, then release the function by
tearing the tapes on the back of the cable, and then
release the cable from the hooks of the middle
bezel.
1
aluminum foil
aluminum foil

5. Disassembly and Assembly Procedures
Take away the bracket chassis module and then put
the bracket chassis module on a protective cushion.
Lift up the panel module for releasing the front bezel
away from the panel module.
S9
S11
S12
S8
S13
S10
Use a proper tool to release the function key cable
from the connector, then pull the function key cable
high for releasing the function key cable.
Use a Philips-head screwdriver to remove 2pcs
screws for unlocking the bracket with the panel.
Push the earing-lock, and disconnect the LVDS
cable from the connector of LCD panel module.
(No.1~2 screw size=M3x2.8, Torque=4~5kgfxcm)
Use a Philips-head screwdriver to remove 13pcs
screws for unlocking the middle bezel with the unit.
(No.1~11 screw size=M3x4, Torque=3~4kgfxcm;
No.12~13 screw size=M1.6x1.7, Torque=0.6~1kgfxcm)
2
10
41
11
3
8
6
5
9
7
12 13
21
31
2
Take away the
.
middle bezel then use a Philips-head
screwdriver to remove 3pcs screws for unlocking the
function key board with the middle bezel

5. Disassembly and Assembly Procedures
S14
Use a Hex-head screwdriver to remove two screws
for unlocking the D-Sub connector.
(No.1~2 screws size=M3x8, Torque=6±0.5kgfxcm)
( No.3~4 screw size=M3x8, Torque=6~7kgfxcm)
Use a Philips-head screwdriver to remove
screws for unlocking the AC power outlet.
two
Remove the interface board and power board from
the bracket chassis module carefully, and disconnect
all the cables.
Remove the Mylar from the hooks of the bracket.
Use a Philips-head screwdriver to remove six screws
for unlocking the circuit board, release all the cables
from the hooks.
(No.1~5 screw size=M3x7.5, Torque=6±0.5kgfxcm;
No. 6 screw size=M4x8, Torque=6±0.5kgfxcm)
S17
S16
34
6
25
1
21
43

5. Disassembly and Assembly Procedures
5.2 Assembly Procedures: Take a mylar to insert the hooks of the bracket to
cover the power board.
S4
Panel preparation: Examine the panel surface
according to inspection criteria. Turn over the panel
to place the screen faced down for later assembling.
S6
Turn over a power board and put the power board
into the bracket chassis, locate the panel power
cable into the hook of the bracket chassis.
Place a bracket chassis base on a protective
cushion.
S2
S1
Take a interface board, connect a LVDS cable to the
connector 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. Use a Philips-head
screwdriver to tighten six screws for locking the
power board and interface board.
(No.1~5 screw size=M3x7.5, Torque=6±0.5kgfxcm;
No.6 screw size=M4x8, Torque=6±0.5kgfxcm)
34
S3
6
25
Put the bracket chassis module on the back of LCD
module, then lift up the panel with bracket and take
1pcs front bezel to assemble with the panel module.
1
Use a Hex-head screwdriver to tighten two Hex Nuts
for locking the D-Sub connector.
(No.1~2 screw size=M3x8, Torque=6±0.5kgfxcm)
(No.3~4 screw size=M3x8, Torque=6~7kgfxcm;
Use a Philips-head screwdriver to tighten two screws
for locking the AC power outlet.
21
43
S7
S5

5. Disassembly and Assembly Procedures
Connect LVDS cable to the connector of panel. Use
a Philips-head screwdriver to tighten 2pcs screws for
locking the bracket with the panel.
(No.1~2 screw size=M3x2.8, Torque=4~5kgfxcm)
Connect the function key cable to the connector of
the board. Fix the function key cable with adhesive
tapes on the back of the cable.
Connect the panel lamp cable to the connector of
the panel, locate the cable into the hooks of the
middle bezel, then stick 2pcs aluminum foil to fix the
bracket chassis base as the picture below shown.
aluminum foil
Take a function key board and a middle bezel, then
fix the middle bezel with a fixture, and locate the
function keyboard into the hooks of the bezel Use a
Philips-head screwdriver to tighten 3pcs screws for
locking the function key board with the middle bezel ,
then assemble the middle bezel with the front bezel.
.
(No.1~3 screw size=M2x2.4, Torque=0.8±0.2kgfxcm
aluminum foil
S8
S11
S12
31
2
Adjust the middle bezel , then use a Philips-head
screwdriver to tighten 13pcs screws for locking the
middle bezel with the assembled unit.
(No.1~11 screw size=M3x4, Torque=3~4kgfxcm;
No.12~13 screw size=M1.6x1.7, Torque=0.6~1kgfxcm)
2
10
41
11
S9
3
8
6
5
9
7
S10
21
12 13

5. Disassembly and Assembly Procedures
Use a Philips-head screwdriver to tighten 4pcs
screws for locking rear cover with the assembled
unit.
(No.1~4 screw size=M4x10; Torque=12 0.5kgfxcm)±
Move the assembled rear cover close to the
panel unit, then connect the USB FFC cable to
the connector of interface board. Put down the
rear cover and push the rear cover on the
positions marked as the picture below shown for
mechanisms engagement.
S14
Take a USB board, a USB hub and a connect cable.
Connect the cable to the USB board, then locate the
USB board into the USB hub. Stick 1pcs aluminum
foil on one side of the USB hub, then locate the
USB unit into the hook of a rear cover. Use a
Philips-head screwdriver to tighten one screw for
locking the USB unit with the rear cover.
(No.1 screw size=M3x6, Torque=4±0.5kgfxcm)
S13
S15
23
41
L
video signal to the monitor
ift up the monitor, then provide power supply and a
, then turn on the monitor
for functionality check.
S17
Stick 2pcs labels on the specific positions as the
picture below shown. Fit the two tabs on the upper
part of the stand into the grooves on the back of the
monitor, and then press the stand so that the
monitor mounting area snaps onto the stand.
S16
1

6. Trouble Shooting Instructions
Self-test
Your monitor provides a self-test feature that allows you to check whether your
monitor is functioning properly. If your monitor and computer are properly
connected but the monitor screen remains dark, run the monitor self-test by
performing the following steps:
1. Turn off both your computer and the monitor.
2. Unplug the video cable from the back of the computer.
3. Turn on the monitor.
The floating dialog box should appear on-screen (against a black background), if the
monitor cannot sense a video signal and is working correctly. While in self-test
mode, the power LED remains white. Also, depending upon the selected input, one
of the dialogs shown below will continuously scroll through the screen.
or
or
4. This box also appears during normal system operation, if the video cable
becomes disconnected or damaged.
5. Turn Off your monitor and reconnect the video cable; then turn On both your
computer and the monitor.
If your monitor screen remains blank after you use the previous procedure, check
your video controller and computer, because your monitor is functioning properly.

6. Trouble Shooting Instructions
Built-in diagnostics
Your monitor has a built-in diagnostic tool that helps you determine if the screen
abnormality you are experiencing is an inherent problem with your monitor, or with
your computer and video card.
NOTE: You can run the built-in diagnostics only when the video cable is
unplugged and the monitor is in self-test mode.
To run the built-in diagnostics:
1. Ensure that the screen is clean (no dust particles on the surface of the
screen).
2. Unplug the video cable(s) from the back of the computer or monitor. The
monitor then goes into the self-test mode.
3. Press and hold Button 1 on the front panel for 5 seconds. A gray screen
appears.
4. Carefully inspect the screen for abnormalities.
5. Press Button 1 on the front panel again. The color of the screen changes to
red.
6. Inspect the display for any abnormalities.
7. Repeat steps 5 and 6 to inspect the display in green, blue, black, white, and
text screens.
The test is complete when the text screen appears. To exit, press Button 1 again.
If you do not detect any screen abnormalities upon using the built-in diagnostic tool,
the monitor is functioning properly. Check the video card and computer.

6. Trouble Shooting Instructions
No Video/Power
LED on
No picture or no
brightness
• Increase brightness & contrast
controls via OSD.
• Perform monitor self-test feature
check.
• Check for bent or broken pins in the
video cable connector.
• Run the built-in diagnostics.
• Ensure that the correct input source is
selected in the Input Source menu.
Poor Focus Picture is fuzzy,
blurry, or ghosting
• Perform Auto Adjust via OSD.
• Adjust the Phase and Pixel Clock
controls via OSD.
• Eliminate video extension cables.
• Reset the monitor to factory settings.
• Change the video resolution to the
correct aspect ratio.
Shaky/Jittery
Video
Wavy picture or
fine movement
• Perform Auto Adjust via OSD.
• Adjust the Phase and Pixel Clock
controls via OSD.
• Reset the monitor to factory settings.
• Check environmental factors.
• Relocate the monitor and test in
another room.
Missing Pixels LCD screen has
spots
•Cycle power On-Off.
• Pixel that is permanently Off is a
natural defect that can occur in LCD
technology.
• For more information on Dell Monitor
Quality and Pixel Policy, see Dell
Support site at: http://
www.dell.com/support/monitors.
Common problems
The following table contains general information about common monitor problems
you might encounter and the possible solutions:
Common
symptoms
What you
experience
Possible solutions
No Video/Power
LED off
No picture • Ensure that the video cable
connecting the monitor and the
computer is properly connected and
secure.
• Verify that the power outlet is
functioning properly using any other
electrical equipment.
• Ensure that the power button is
pressed fully.
• Ensure that the correct input source is
selected in the Input Source menu.

6. Trouble Shooting Instructions
Stuck-on Pixels LCD screen has
bright spots
•Cycle power On-Off.
• Pixel that is permanently off is a
natural defect that can occur in LCD
technology.
• For more information on Dell Monitor
Quality and Pixel Policy, see Dell
Support site at: http://
www.dell.com/support/monitors.
Brightness
Problems
Picture too dim or
too bright
• Reset the monitor to factory settings.
• Perform Auto Adjust via OSD.
• Adjust brightness & contrast controls
via OSD.
Geometric
Distortion
Screen not
centered correctly
• Reset the monitor to factory settings.
• Perform Auto Adjust via OSD.
• Adjust horizontal & vertical controls
via OSD.
• When using HDMI/DisplayPort input,
the positioning adjustments are not
available.
Horizontal/
Vertical Lines
Screen has one or
more lines
• Reset the monitor to factory settings.
• Perform Auto Adjust via OSD.
• Adjust the Phase and Pixel Clock
controls via OSD.
• Perform monitor self-test feature
check and determine if these lines are
also in self-test mode.
• Check for bent or broken pins in the
video cable connector.
• Run the built-in diagnostics.
• When using HDMI/DisplayPort input,
the Pixel Clock and Phase
adjustments are not available.
Synchronization
Problems
Screen is
scrambled or
appears torn
• Reset the monitor to factory settings.
• Perform Auto Adjust via OSD.
• Adjust the Phase and Pixel Clock
controls via OSD.
• Perform monitor self-test feature
check to determine if the scrambled
screen appears in self-test mode.
• Check for bent or broken pins in the
video cable connector.
• Restart the computer in the safe
mode.
Safety Related
Issues
Visible signs of
smoke or sparks
• Do not perform any troubleshooting
steps.
•Contact
D
e
l
l i
mmediately.

6. Trouble Shooting Instructions
Intermittent
Problems
Monitor
malfunctions on &
off
• Ensure that the video cable
connecting the monitor to the
computer is connected properly and is
secure.
• Reset the monitor to factory settings.
• Perform monitor self-test feature
check to determine if the intermittent
problem occurs in self-test mode.
Missing Color Picture missing
color
• Perform monitor self-test feature
check.
• Ensure that the video cable
connecting the monitor to the
computer is connected properly and is
secure.
• Check for bent or broken pins in the
video cable connector.
Product specific problems
Common
symptoms
What you
experience
Possible solutions
Screen image is too
small
Image is centered
on screen, but
does not fill entire
viewing area
•Check the Aspect Ratio setting in the
Display menu OSD.
• Reset the monitor to factory settings.
No Input Signal
when user controls
are pressed
No picture, the
LED light is white
• Check the signal source. Ensure the
computer is not in the power saving
mode by moving the mouse or pressing
any key on the keyboard.
• Check whether the signal cable is
plugged in properly. Re-plug the signal
cable if necessary.
• Reset the computer or video player.
Wrong Color Picture color not
good
• Change the settings of the Preset
Modes in the Color menu OSD
depending on the application.
• Adjust R/G/B value under Custom
Color in Color menu OSD.
• Run the built-in diagnostics.
Image retention
from a static
image left on the
monitor for a long
period of time
Faint shadow
from the static
image displayed
appears on the
screen
•
• Alternatively, use a dynamically
changing screensaver.
Set the screen to turn oᴀ after a few
minutes of screen idle time. These can
be adjusted in Windows Power Options
or Mac Energy Saver setting.

6. Trouble Shooting Instructions
The picture does
not fill the entire
screen
The picture cannot
fill the height or
width of the screen
• Due to different video formats (aspect
ratio) of DVDs, the monitor may display
in full screen.
• Run the built-in diagnostics.
NOTE: When choosing HDMI/DisplayPort mode, the Auto Adjust
function will not be available.
Universal Serial Bus (USB) specific problems
Common
symptoms
What you
experience
Possible solutions
USB interface is
not working
USB peripherals
are not working
• Check that your monitor is turned On.
• Reconnect the upstream cable to your
computer.
• Reconnect the USB peripherals
(downstream connector).
• Switch Off and then turn On the
monitor again.
• Reboot the computer.
• Some USB devices like external
portable HDD require higher electric
current; connect the device directly to
the computer system.
Super Speed USB
3.0 interface is
slow
Super Speed USB
3.0 peripherals
working slowly or
not working at all
• Check that your computer is USB 3.0-
capable.
• Some computers have USB 3.0, USB
2.0, and USB 1.1 ports. Ensure that the
correct USB port is used.
• Reconnect the upstream cable to your
computer.
• Reconnect the USB peripherals
(downstream connector).
• Reboot the computer.
Wireless USB
peripherals stop
working when a
USB 3.0 device is
plugged in
Wireless USB
peripherals
responding slowly
or only working as
the distance
between itself and
its receiver
decreases
• Increase the distance between the
USB 3.0 peripherals and the wireless
USB receiver.
• Position your wireless USB receiver as
close as possible to the wireless USB
peripherals.
• Use a USB-extender cable to position
the wireless USB receiver as far away
as possible from the USB 3.0 port.