HP X24c Manual

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Maintenance and Service Guide
X24c model
SUMMARY
This guide provides information about spare parts, removal and replacement of parts, diagnostic tests, problem
troubleshooting, and more.

© Copyright 2020 HP Development
Company, L.P.
AMD is a trademark of Advanced Micro
Devices, Inc. Bluetooth is a trademark
owned by its proprietor and used by HP
Inc. under license. NVIDIA is a trademark
and/or registered trademark of NVIDIA
Corporation in the U.S. and other
countries. USB Type-C and USB-C are
registered trademarks of USB
Implementers Forum. DisplayPort and the
DisplayPort logo are trademarks owned
by the Video Electronics Standards
Association (VESA) in the United States
and other countries.
The information contained herein is
subject to change without notice. The
only warranties for HP products and
services are set forth in the express
warranty statements accompanying such
products and services. Nothing herein
should be construed as constituting an
additional warranty. HP shall not be liable
for technical or editorial errors or
omissions contained herein.
First Edition: April 2021
Document Part Number: L89666-X24C-
MSG-V1
Assembly part number: L89666-001

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Table of Contents
1Getting started .............................................................................................................................................. 1
Important safety information.................................................................................................................... 1
Important service information and precautions ........................................................................................ 1
RoHS (2002/95/EC) requirements........................................................................................................... 2
General descriptions ............................................................................................................................... 2
Firmware updates.................................................................................................................................... 2
Before returning the repaired product to the customer ........................................................................... 2
2Monitor features ............................................................................................................................................ 3
Features .................................................................................................................................................. 3
Front components.................................................................................................................................... 4
Rear components .................................................................................................................................... 5
Locating the serial number and product number..................................................................................... 6
3Illustrated parts catalog................................................................................................................................. 7
How to order parts................................................................................................................................... 8
4Removal and replacement procedures ......................................................................................................... 9
Preparation for disassembly.................................................................................................................... 9
Power board ........................................................................................................................................ ..12
Connector repair.................................................................................................................................. ..13
Audio connector M1 .................................................................................................................. ..14
HDMI connector J2 ................................................................................................................... ..14
DP connector J3 ....................................................................................................................... ..15
Function test.......................................................................................................................................... 17
Function test.......................................................................................................................................... 17
Support and troubleshooting ............................................................................................................... ..17
Index.................................................................................................................................................... ..19

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1 Getting started
Read this chapter to learn about safety information and where to find additional HP resources.
Important safety information
Carefully read the cautions and notes within this document to minimize the risk of personal injury to
service personnel. The cautions and notes are not exhaustive. Proper service methods are important to
the safe, reliable operation of equipment. Improper service methods can damage equipment.
The service procedures recommended and described in this service manual provide effective methods of
performing service operations. Service engineers should have prior repair knowledge and experience as
well as appropriate training for the product before performing service procedures.
●Be sure your working environment is dry and clean and meets all government safety
requirements.
●Be sure that other persons are safe while you are servicing the product.
●Do not perform any action that can cause a hazard to the customer or make the product
unsafe.
●Use proper safety devices to ensure your personal safety.
●Always use approved tools and test equipment for servicing.
●Never assume the product’s power is disconnected from the main power supply. Check that it
is disconnected before opening the product’s cabinet.
●Modules containing electrical components are sensitive to electrostatic discharge (ESD).
Follow ESD safety procedures while handling these parts.
●Some products contain more than one battery. Do not disassemble or expose a battery to high
temperatures, such as throwing into fire, or the battery may explode.
●Refer to government requirements for battery recycling or disposal.
This information provides general service information for the monitor. Adherence to the
procedures and precautions is essential for proper service.
IMPORTANT: Only trained service personnel who are familiar with this HP product should perform service
or maintenance for it. Before performing any service or maintenance, personnel must read the important
safety information.
IMPORTANT: You must disconnect the power cord from the power source before opening the monitor
to prevent component damage.
Important service information and precautions
●Repair must be performed by professional service technicians in a repair center. End users
should not perform these procedures.
●Please note during servicing that the primary side is the high voltage area.
●This monitor meets ROHS requirements. Be sure to use lead-free solder wire when soldering.
●If you must change a capacitor, be sure to match the polarity as printed on the PCB.
●If you must replace a capacitor, make sure the specification and part number match the BOM
and location.

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●If you must replace a capacitor, insert new parts carefully to avoid a short circuit caused by the
near pin.
●Do not get the board wet. Water and moisture can cause a short circuit that causes
malfunctions.
●To avoid damage, be sure to use lead-free solder.
●When soldering, work quickly to avoid overheating the circuit board.
●Keep the soldering iron tip clean and well tinned when replacing parts.
●After repair, perform a close inspection of the circuit board to confirm it is in good condition.
●After repair, perform a function test to confirm the power supply is working properly.
ERP Lot5 requirement
1. A professional repairer must have the technical competence to repair electronic displays and
comply with the applicable regulations for repairers of electrical equipment in the Member States
where the repairer operates. Reference to an official registration system as professional repairer,
where such a system exists in the Member States, shall be accepted as proof of compliance.
2. A professional repairer must have insurance that covers liabilities resulting from repairs,
regardless of whether required by the Member State.
RoHS (2002/95/EC) requirements
Applied to all countries that require RoHS.
The RoHS (Restriction of Hazardous Substance in Electrical and Electronic Equipment Directive) is a
legal requirement by the EU (European Union) for the global electronics industry sold in the EU and
other countries. Any electrical and electronics products launched in the market after June 2006 should
meet this RoHS requirement. Products launched in the market before June 2006 are not required to be
compliant with RoHS parts. If the original parts are not RoHS complaint, the replacement parts can be
non-ROHS complaint. If the original parts are RoHS compliant, the replacement parts MUST be RoHS
complaint.
If product service or maintenance requires replacing parts, confirm the RoHS requirement before
replacement.
General descriptions
This manual contains general information. There are two levels of service:
Level 1: Cosmetic/appearance/alignment service
Level 2: Circuit board or standard parts replacement
Firmware updates
Firmware updates for the monitor are available at support.hp.com. If no firmware is posted, the monitor
does not need a firmware update.
Before returning the repaired product to the customer
Perform an AC leakage current check on exposed metallic parts to be sure the product is safe to
operate without the potential of electrical shock. Do not use a line isolation transformer during this
check.
Measurements that are not within specified limits present a possible shock hazard. You must check and
repair the product before returning it to the customer.

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2 Monitor features
This chapter provides an overview of the monitor’s features.
Features
Depending on the model, your monitor might include the following features:
●59.94 cm (23.6-inch) diagonal viewable screen area with 1920 x 1080 resolution, plus full-
screen support for lower resolutions; includes custom scaling for maximum image size while
preserving original aspect ratio
●Anti-Glare panel with an LED backlight
●Wide viewing angle to allow viewing from a sitting or standing position, or when moving from
side to side
●Tilt capability
●Swivel and height adjustment capabilities
●Removable stand for flexible monitor head mounting solutions
●Display Port video input
●High-Definition Multimedia Interface
●Audio headphone
●Plug-and-play capability if supported by your operating system
●Security cable slot provision on rear of monitor for optional security cable
●On-Screen Display (OSD) adjustments in several languages for easy setup and screen
optimization
●High-Bandwidth Digital Content Protection (HDCP) copy protection on all digital inputs
●Energy saver feature to meet requirements for reduced power consumption
NOTE: For safety and regulatory information, refer to the Product Notices provided in your
documentation kit. To access the latest user guides or manuals for your product, go to
http://www.hp.com/support and follow the instructions to find your product. Then select Manuals.
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Front components
To identify the components on the front of the monitor, use this illustration and table.
1 2 3 4 5 6
Control Description
1 Menu button Press to open the OSD menu, select a menu item from the OSD, or close the OSD
menu.
2-4 Function buttons
When the OSD menu is open, press the buttons to navigate through the menu. The
function light icons indicate the default button functions. For a description of these
functions, see Using the function buttons on page 14.
You can reassign the function buttons to quickly select the most commonly used
operations. See Reassigning the function buttons on page 14.
5Power Turns the monitor on or o.
6 Power light White: The monitor is on.
Amber: The monitor is in standby mode.

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Rear components
To identify the components on the rear of the monitor, use this illustration and table.
1 2 3 4
Component Description
1 Power connector Connects the power cable to the monitor
2 HDMI connector Connects the HDMI cable to the monitor
3 DisplayPort connector Connects the DisplayPort cable to the monitor
4Audio-out (headphone)
jack
Connects headphones to the monitor.
CAUTION: To reduce the risk of personal injury, adjust the volume before
using headphones or earbuds. For additional safety information, see the
Product Notices provided in your documentation kit.

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Locating the serial number and product number
The SPEC label (1) and Barcode label (2) are located on the rear of the monitor. The serial number and
product number are located on a Safety label. You may need these numbers when contacting HP about
the monitor model.
For worldwide models (except India):
Label
For India:
label

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3 Illustrated parts catalog
To identify the monitor major components, use this illustration and table.

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How to order parts
The HP authorized repair center can purchase the power board from HP.
Power board
Description HP spare part number Manufacturer part number
PSU X24c 21204-00925-S01 M84714-001 21204-00925
Capacitors and connectors are available for purchase from the following EU distributors:
Digi-Key: digikey.co.uk
Capacitors by distributor
Component description Location Component
distributor Distributor part number
EC_470uF_25V_10*13 C811、C817 Digi-Key 399-6656-1-ND
EC_470uF_25V_10*13 RS- Component 862-3175
Connectors by manufacturer
Component
description Location identifier Component distributor Distributer part number
DisplayPort P105 Digi-Key
670-2430-ND
HDMI P111 Digi-Key
1175-2000-1-2-30-00-BK-TR-ND
Audio P602 Digi-Key
CP1-3525NG-ND
NOTE: The connector may need to be modified to meet functionality, regulatory and safety
requirements if it is not an exact match.
You can purchase cables from the HP part store at https://partsurfer.hp.com/Search.aspx.
NOTE: HP continually improves and changes product parts. For complete and current information
about supported parts for your computer, go to http://partsurfer.com, select your country or region,
and then follow the on-screen instructions.

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4 Removal and replacement procedures
Adherence to these procedures and precautions is essential for proper service.
Preparation for disassembly
Use this information to properly prepare to disassemble and reassemble the monitor.
1) Read the “Important safety information” and “Important service information and precautions”
sections in the “Getting started” chapter of this guide.
2) Clean the room for disassembly.
3) Identify the disassembly area.
4) Check the position that the monitors are to be placed along with the number of monitors. Prepare the
area for material flow according to the disassembly layout.
5) Be sure to have the following equipment and materials:
Press fixture
Working table
Screwdriver
Knife
Gloves
Cleaning cloth
ESD protection
Scraper bar in the following dimensions:
▲Prepare the monitor for disassembly.
1) Rotate the screw from counterclockwise to remove base

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2) Disassembly VESA cover by hexagon keys, turn the four screws clockwise to remove the arm from
the display head.
3) Use knife to sparated the rear cover from the MNT head through the tear down slots which on the
bottom side.
4) a.Remove the acetate tape (red frame)/unplug the backlight (green frame), remove the aluminum
foil (yellow frame) to release wire and the shielding case.b. Remove screws(red circles) and
remove shielding(need to pull-out the wires first).

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5) a.Release screw from shielding case bottom side.b. Remove Main board from shielding case
6) Remove the screws*11 which around bezel, then remove bezel from panel rear side.
7) a.Remove screw from red portion.b. Release screws from mylars.c. Remove screws from
M/B(yellow)&P/B(red).

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Power board
The power board part number is 21204-01047.
Before removing the power board, follow these steps:
▲Prepare the monitor for disassembly.
Remove the power board:
1) The HP X24c power board connector position is as follows:

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2) Locate the part number location on the board.
Connector repair
This procedure includes HDMI, DisplayPort and audio connectors.
The connectors are on the main board (board part number 60104-09513).
The connectors identifiers are as follows:
Connector Location
HDMI P111
DisplayPort P105
Audio P602

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Before repairing connectors, follow these steps:
▲Prepare the monitor for disassembly. See Preparation for disassembly on page 9.
Audio connector P602
Repair the audio connector:
1) Use a hot air gun to melt the solder on the pins. Pin solder with soldering iron and absorber. You
can gently push down with the soldering iron once everything is molten to move the P602 out of the
through holes.
2) Lift the P602 connector from the circuit board.
3) Place the new component on the circuit board. Be sure that it matches the footprint.
4) Solder the new component.
HDMI connector P111
Repair the HDMI connector:
1) Use a soldering iron and a de-soldering pump to remove as much solder as possible from the pin.

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2) Use a hot air gun to melt the solder on the pins.
3) Lift the P111 connector from the circuit board.
4) Place the new component on the circuit board. Be sure that it matches the footprint.
5) Solder the new component.
DP connector P105
Repair the DP connector:
1) Use a soldering iron and a de-soldering pump to remove as much solder as possible from the pin.
2) Use a hot air gun to melt the solder on the pins.

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3) Lift the P105 connector from the circuit board.
4) Place the new component on the circuit board. Be sure that it matches the footprint.
5) Solder the new component.

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Function test
After repair, be sure to confirm that all functions are working.
Support and troubleshooting
The following table lists possible problems, the possible cause or each problem, and the recommended
solutions.
Table 4-1: Function test
Test item Operating description Tool used
HDMI test Confirm whether image displays and sound
plays correctly on the monitor.
Computer or DVD player
DP test Confirm whether image displays and sound
plays correctly on the monitor.
Computer or DVD player
Audio test Change volume and balance to confirm whether
volume is smooth and loud enough.
Speaker
Table 4-2: Solving common problems
Problem Possible cause Solution
Screen is blank
or video is
flashing.
Power cord is disconnected. Connect the power cord.
Monitor is off. Power the power button.
NOTE: If pressing the
Power button has no
effect, press and hold the
power button for 10
seconds to disable the
Power button lockout
feature.
Video cable is improperly connected. Connect the video cable
properly.
System is in Sleep mode. Press any key on the
keyboard or move the
mouse to exit Sleep mode.
Video card is incompatible. Open the OSD menu and
select the Input Control
menu. Set Auto-Switch
Input to Off and manually
select the input
Image appears
blurred,
indistinct, or too
Brightness is too low. Open the OSD menu and
select Brightness to
adjust the brightness scale