HP Engage 15t Manual

Maintenance and Service Guide
Engage 15t model
SUMMARY
This guide provides information about spare parts, removal and replacement of parts, diagnostic tests, problem
troubleshooting, and more.

© Copyright 2022 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: Jun. 2022
Document Part Number: N12322-Engage 15t-
MSG-V1
Assembly part number: N12322-001
Product notice
Only trained service personnel familiar with this
product should service it. Before performing any
maintenance or service, be sure to read
“Important Safety Information”.

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Table of Contents
1Getting started............................................................................................................................................................................................... 2
Important safety information ............................................................................................................................................................... 2
Important service information and precautions.................................................................................................................................. 2
RoHS (2002/95/EC) requirements...................................................................................................................................................... 3
General descriptions .............................................................................................................................................................................. 3
Firmware updates................................................................................................................................................................................... 3
Before returning the repaired product to the customer.................................................................................................................... 3
2Monitor features............................................................................................................................................................................................ 4
Features.................................................................................................................................................................................................... 4
Front components .................................................................................................................................................................................. 5
Rear components ................................................................................................................................................................................... 6
Locating the serial number and product number............................................................................................................................... 7
3Illustrated parts catalog................................................................................................................................................................................. 8
How to order parts................................................................................................................................................................................. 9
4Removal and replacement procedures...................................................................................................................................................... 10
Preparation for disassembly................................................................................................................................................................10
Rear Cover.............................................................................................................................................................................................11
Power board.......................................................................................................................................................................................... 14
Connector repair...................................................................................................................................................................................14
USB 3.0 A connector CN703/CN705 .................................................................................................................................16
USB 3.0 B connector CN704 ................................................................................................................................................17
Display Port connector CN501.............................................................................................................................................17
DC Power Jack connector CN101........................................................................................................................................18
Function test ......................................................................................................................................................................................... 19
Function test ......................................................................................................................................................................................... 19
Support and troubleshooting..............................................................................................................................................................19
Index ......................................................................................................................................................................................................20

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1Getting 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.
●If you must replace a capacitor, insert new parts carefully to avoid a short circuit caused by the near pin.

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●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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2Monitor features
This chapter provides an overview of the monitor’s features.
Features
Depending on the model, your monitor might include the following features:
Display features
●38.1 cm (15 in) diagonal viewable screen area with 1024 × 768 resolution, plus full-screen support for lower resolutions;
includes custom scaling for maximum image size while preserving original aspect ratio
●Liquid crystal display (LCD) with Vertical Alignment (VA)
●Wide color gamut to provide coverage of sRGB color spaces
●Antiglare panel with an LED backlight
●Wide viewing angle to allow viewing from a sitting or standing position, or moving from side to side
●Four on-screen display (OSD) buttons, three that you can reconfigure to quickly allow selection of the most
commonly used operations
●On-screen display (OSD) adjustments in several languages for easy setup and screen optimization
●Energy saver feature to meet requirements for reduced power consumption
●Cable management feature for placement of cables and cords
Connectors
●DisplayPort™ IN video input
●USB Type-B port upstream connectors
●Two USB Type-A downstream connectors
●Audio-out (headphone) jack Monitor
stand (sold separately)
●Removable stand for flexible monitor-head-mounting solutions
●HP Quick Release 2 device to quickly attach the monitor head to the stand with a simple click, and then remove it with
the convenient sliding tab release
●VESA® mounting bracket for attaching the monitor head to a wall-mount device or swing arm
●VESA mounting capability (100 × 100 mm) for attaching the monitor to a swing arm mount
NOTE: For safety and regulatory information, see the Product Notices provided in your documentation kit. To access the
latest user guide, 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.
Table 1-1: Front components and their descriptions
Component
Function
1
Power button
Turns the monitor on or off.
NOTE:When the monitor is turned on, the light on
the power button turns on.
2
OSD buttons
Open the OSD menu and make adjustments to
monitor settings.
3
Headphone jack
Connects optional powered stereo speakers,
headphones, or an audio cable. This jack does not
support optional standalone microphones.

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Rear components
To identify the components on the rear of the monitor, use this illustration and table.
Table 1-2: Rear components and their descriptions
Component
Function
1
USB connector (downstream)
Connect USB devices to the monitor.
2
USB connector (downstream)
Connect USB devices to the monitor.
3
USB Type-B connector
Connects a USB Type-B cable.
4
DisplayPort connector
Connects a DisplayPort cable.
5
Power connector
Connects a power cord.

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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.

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3Illustrated parts catalog
To identify the monitor major components, use this illustration and table.
Item
Description
Qty
1
DECO_BEZEL
1
2
PANEL
1
3
MIDDLE_FRAME
1
4
MAIN BOARD
1
5
MAINFRAME
1
6
BKT_VESA
1
7
REAR_COVER
1
8
COVER_VESA
1
S1
SCREW D3 6
4
S2
SCREW M3 3
1

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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 Engage 15t 1st Source
N13664-003
ADP-450FE FAB
PSU Engage 15t 2nd Source
N13664-001
PA-1450-20HT
Capacitors and connectors are available for purchase from the following EU distributors:
Farnell: Farnell UK - Electronic Components Distributor
RS Component: Capacitors | RS Components (rs-online.com)
Capacitors by distributor
Component description
Location
Component
distributor
Distributor part number
NA
NA
NA
NA
Connectors by manufacturer
Component description
Location identifier
Component
distributor
Distributer part number
USB 3.0 A
CN703/CN705
RS
10117835-002LF
（Amphenol ICC）
USB 3.0 B
CN704
RS
692221030100
（Wurth Elektronik）
DisplayPort
CN501
Farnell
DP1RD20JQ1
(JAE)
DC POWER JACK
CN101
NA
Contact HP Support
NOTE: Rear cover and chassis need to be modified to hold connector. Connector may need modifications to
meet functional, safety and regulatory requirements accordingly if it doesn’t match exactly.
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.
Internal and External Power Supplies are available for purchase from the following EU distributor: EET
https://www.eetgroup.com/en-eu/
NOTE: HP continually improves and changes product parts. For complete and current information about
supported parts for your product, go to https://partsurfer.hp.com/Search.aspx, select your country or region, and
then follow the on-screen instructions.

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4Removal 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:

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Rear Cover
Before removing the Rear Cover, follow these steps:
▲Prepare the monitor for disassembly. See Preparation for disassembly on page 10.
Remove the Rear Cover:
1) Use disassembly tool to open all the latches along the edge of the rear cover.
2) Disassemble the Rear Cover, take off the tapes.
3) Disconnect the pin and remove the speakers.

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4) Disconnect the pin and remove the headphone jack board.
5) Disconnect the pin and remove the key board.

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6) Disconnect the pin and remove the mainframe.
7) Unscrew the screws to remove the main board.

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Power board
The power board is adapter.
Connector repair
This procedure includes USB 3.0A, USB 3.0 B, DisplayPort and DC POWER JACK connectors.
The connectors are on the main board (board part number CBPR2EBH5Q1).
The connectors identifiers are as follows:
Connector
Location
USB 3.0 A
CN703/CN705
USB 3.0 B
CN704
DisplayPort
CN501
DC POWER JACK
CN101
Before repairing connectors, follow these steps:
▲Prepare the monitor for disassembly. See Preparation for disassembly on page 10.
IMPORTANT:
• Repair Condition: Connector repair is only for out of warranty.
• Repairing must operate by professional repairers (Note) in repair center, not applicable for end user.
• Electrostatic protection is required when component replacement is required.
• The monitor meets ROHS, please use Lead-free solder wire for soldering.
• If Connector need to replace, must check specification and part number whether match the BOM and location.
Main Board
CN501
CN101
CN704
CN705
CN703

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• If connector need to replace, please insert new parts carefully because the near pin may cause short circuit by
inappropriate operate.
• DO NOT allow any liquid on the board. Water and moisture may cause short-circuit to the electronic components and
lead to malfunctions.
• The fusion point of Lead-Free solder is requested. Repairing with conventional lead wire may cause damage.
• Work quickly to avoid overheating the circuit board as soon as you confirm the steady soldering condition.
• Keep the soldering iron tip clean and well tinned and when replacing parts.
• A close inspection of the circuit board revealed look in good condition.
• After repaired, must connect source to each port to check Main board function is ordinary.
Note: (The requirement of professional repairers’ regulation by ERP lot5)
1) The professional repairer has the technical competence to repair electronic displays and complies with the
applicable regulations for repairers of electrical equipment in the Member States where it operates. Reference to
an official registration system as professional repairer, where such system exists in the Member States
concerned, shall be accepted as proof of compliance with this point.
2) The professional repairer is covered by insurance covering liabilities resulting from its activity, regardless of
whether this is required by the Member State.

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USB 3.0 A connector CN703/CN705
Repair the USB 3.0 A connector:
1) Use a soldering iron and a de-soldering pump to remove as much solder as possible from the pin.
2) Lift the CN703/CN705 connector from the circuit board.
3) Place the new component on the circuit board. Be sure that it matches the circuit board footprint.
4) Solder the new component.

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USB 3.0 B connector CN704
Repair the USB 3.0 B connector:
1) Use a soldering iron and a de-soldering pump to remove as much solder as possible from the pin.
2) Lift the CN704 connector from the circuit board.
3) Place the new component on the circuit board. Be sure that it matches the circuit board footprint.
4) Solder the new component.
Display Port connector CN501
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 CN501 connector from the circuit board.
4) Place the new component on the circuit board. Be sure that it matches the circuit board footprint.
5) Solder the new component.
DC Power Jack connector CN101
Repair the DC POWER JACK connector:
1) Use a soldering iron and a de-soldering pump to remove as much solder as possible from the pin.
2) Lift the CN101 connector from the circuit board.
3) Place the new component on the circuit board. Be sure that it matches the circuit board footprint.
4) Solder the new component.