HP E27k G5 Manual

Maintenance and Service Guide
E27k G5 model
SUMMARY
This guide provides information about spare parts, removal and replacement of parts, diagnostic
tests, problem troubleshooting, and more.

© Copyright 2023 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: February 2023
Document Part Number:
N22903-001-E27k G5 -MSG-V1
Assembly part number
N22903-001 (COMP P/N)
N22903-002 (COMP P/N w TTS)
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”.

Table of Contents
1Getting started.........................................................................................................................................................................1
Important safety information....................................................................................................................................1
Important service information and precautions.............................................................................................2
RoHS (2002/95/EC) requirements...........................................................................................................................2
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..........................................................................................8
3Illustrated parts catalog.....................................................................................................................................................9
How to order parts ....................................................................................................................................................... 11
4Removal and replacement procedures.................................................................................................................. 12
Preparation for disassembly...................................................................................................................................12
Rear Cover........................................................................................................................................................................ 13
Power board .................................................................................................................................................................... 16
Connector repair........................................................................................................................................................... 20
HDMI connector – J401 ..................................................................................................................................21
DP Connector repair – J301......................................................................................................................... 22
RJ45 Connector repair- JH1 ........................................................................................................................... 23
Function test....................................................................................................................................................................24
Support and troubleshooting.................................................................................................................................25
Index .................................................................................................................................................................................... 27

1
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.
●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.

3
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.

2Monitor features
This chapter provides an overview of the monitor’s features.
Features
Depending on the model, your monitor might include the following features:
●68.47 cm (27 inch) diagonal viewable area with 3842 × 2160 resolution, plus full screen
support for lower resolutions
●USB Type-C port for docking an HP notebook or HP desktop mini
●Single power button on the monitor to turn the monitor and docked notebook on and
off
●One High-Definition Multimedia Interface (HDMI) 2.0 video input
●RJ-45 (network) jack
●Non-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
●On-screen display (OSD) adjustments in several languages for easy setup and screen
optimization
●Plug and Play capability if supported by your operating system
●Tilt, swivel, and height adjustment capabilities
●Pivot capability to rotate the monitor head from landscape to portrait orientation
●Removable stand (optional) for flexible monitor head mounting solutions
●DisplayPort video input
●USB hub with one USB Type-C port and 3 USB Type-A ports that connect to USB devices
●Up to 65 W power delivery through USB Type-C (5 A) cable
●HDCP (High-bandwidth Digital Content Protection) used on all digital inputs
●Power Saver mode to meet requirements for reduced power consumption
●Security cable slot on the rear of the monitor for an optional security cable
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.

5
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
Description
(1)
Ambient light sensor
Adjusts the display brightness according to lighting
conditions in the environment.
(2)
Power button
Turns the monitor on or off.
NOTE: When an HP notebook
is connected to the USB
Type
-C port, pressing the power button on the display
turns on/off your notebook, or puts it to sleep based on
your power setting.
(3)
Power LED
Indicates that the monitor is powered on.

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) Joypad
Press to open the OSD settings.
(2) Security cable
slot
Connects an optional security cable.
(3) Power
connector
Connects a power cord.
(4) HDMI port
Connects the HDMI
cable to a source device such as a
computer.
(5) DisplayPort
connector
Connects a DisplayPort cable to a source device such as a
computer or game console.
(6) USB Type-C
port
(upstream)
Connects a USB Type-C cable to a source device, such as a
computer. This USB Type-C port can function as a DisplayPort
audio/video input or as a USB 3.0 connection. The USB Type-C
port offers the fastest transfer rate, and the alternate mode
with DP1.2 supports the maximum resolution of 1920 x 1080 at
75Hz, and 2560 x 1440 at 75Hz. It can also be used to deliver up

7
to 65 W of power to a device. Power delivery outputs are
20V/3.25A, 15V/4.33A, 12V/5A, 9V/3A, 5V/3A to achieve a 65 W
output.
Connecting a USB T
ype-C cable from a source device to this
port on the monitor enables USB ports on the monitor.
(7)
RJ
-45 (network)
jack
Network (RJ-45) data rate via USB Type-C max speed is 1000
Mbps
Green (right): The network is connected.
Amber (left): Activity is occurring on the network.
NOTE: Supports Wake on Lan (WOL) In-band, Mac Address
Passthrough (MAPT) in-band (HP models only), and PXE boot.
The functionality may vary with PC settings.
NOTE:
This network port is fully energy efficient according to IEEE
standards (IEEE 802.3az
-2010) as long as all connected devices
support this feature.
(8)
USB Type
-A port
Connects a USB device to transfer data.
(9)
USB Type
-C
port
(downstream)
Connects a USB Type-C cable to a peripheral USB device,
provides data transfer, even when the monitor is in Sleep
mode or DC off with OSD Performance mode on. This port
charges most devices (15 W), such as a smart phone or a
tablet.
NOTE:
Cables or adapters may be required (purchased
separately).
(10)
USB Type
-A port
(1), USB Type
-A
port with
battery fast
-
charging 1.2 (1)
USB port: Connects a USB device, provides data transfer, and
(for select products) charges small devices (such as a
smartphone) when the computer is on or in Sleep mode.
USB port with battery fast-charging 1.2 (5 V × 1.5 A = 7.5 W):
Connects a USB device, provides high-speed data transfer,
and charges small devices (such as a smartphone), even
when the monitor is DC off with OSD performance mode on.
NOTE:
Use a standard USB Type-A charging cable or cable
adapter (purchased separately) when charging a small
external device.

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 :
For MP
For Service
SPEC Laser

9
3Illustrated parts catalog
To identify the monitor major components, use this illustration and table.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15

Item Description Qty
1
PANEL
1
2 MIDDLE FRAME 1
3
MAIN BD
1
4 ALS BD 1
5
LENS BD
1
6 POWER BD 1
7
MAIN SHD
1
8 SPEAKER 1
9
USB BD
1
10 CONTROL BD 1
11
REAR CASE
1
12 HINGE 1
13
VESA COVER
1
14 CLMN 1
15
BASE
1

11
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
SPS-IPS E27k
G5_5E.5S102.002 AUO-Q
N53986-002 5E.5S102.002
SPS-IPS E27k
G5_5E.5S102.001 LGD-Q
N53986-001 5E.5S102.001
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
#CAP
470U25VRC1330RT5
10*12.5
C711, C712
C713, C714
C715
Farnell
RS 25ZLH470MEFC10X12.5
Connectors by distributor
Component
description
Location
Component
distributor
Distributer part number
HDMI
J401
Farnell
Molex 47659-1100
DP
J301
Farnell
TE 2041441-1
RJ-45
JH1
Farnell
AMP - TE CONNECTIVITY (2-406549-1.).
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.
Internal and External Power Supplies are available for purchase from the following EU
distributor: EET https://www.eetgroup.com/en-eu/

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:

13
Rear Cover
No
Picture
Operation
Tool
1 Disassemble stand by
pushing release button.
2 Disassemble VESA COVER
from RC.
N/A
3 1. Disassemble M4 screw
(8F.00729.011) * 4pcs
2. Disassemble Hinge and
RC
3. Disassemble RC and MF
Screwdri
ver：
TORQUE
9.0±1
(KG-CM)

4 Disassemble RC OSD -BD
and USB-BD FFC
6 1. Disconnect PWR-BD wire
2. Disconnect SPK wire
3. Disconnect PWR Key-BD
FFC and ALS-BD FFC
4. Tear off adhesive tape on
panel light bar wire
(3H.04054.071) *1pc
7 1. Tear off yellow
tape(3H.04121.082)
2. Disconnect IF-BD EDP
3. Disassemble SHD from MF
8 1. Disassemble M3 screw
(8F.5A224.4R5) * 13pcs
2. Disassemble MF and
Panel
Screwdri
ver：
TORQUE
6.5±0.5
(KGF-
CM)

15
9 1. Disassemble M3 screw
(8F.00608.6R0) * 6pcs
2. Unhook speaker wire
from MF
3. Disassemble SPK from MF
4. Disassemble panel wire
from panel
5. Disassemble panel from
MF
Screwdri
ver：
TORQUE
5.0±1.0
(KGF-
CM)
11 Disassemble M3 screw
(8F.00607.8R0) * 2pc from
SHD
Screwdri
ver：
TORQUE
5.0±1.0
(KGF-
CM)
12 Disassemble safety Mylar
(4K.5S101.001) from SHD
13 1. Disassemble M3 screw
(8F.VG434.9R0) *8pcs
from PWR-BD and IF-BD
2. Disassemble PWR-BD and
IF-BD from SHD
Screwdri
ver：
TORQUE
8.5±1.0
(KGF-
CM)
14 1. Disconnect the EDP from
IF-BD
2. Disconnect wire on IF-BD
IF BD
IF BD PWR BD

Power board
The power board part number is 5E.5S502.00*
Before removing the power board, follow these steps:
▲Prepare the monitor for disassembly. See Preparation for disassembly on page 12.
Remove the power board:
Locate the part number location on the board.
IMPORTANT:
•Repairing must operate by professional repairers in HP repair center, not
applicable for end user
•The primary side is the high voltage area, please take care when repair (Front and
Back view)
After repaired, must check PSU function is ordinary
Power BD PN
Primary Side Primary Side

17
Power board
Repair Condition: Capacitor repair is only for the monitor that has been out of warranty period.
IMPORTANT:
•Repairing must operate by professional repairers (Note) in repair center, not
applicable for end user
•The primary side is the high voltage area, please take care when repair (Front and
Back view)
•Electrostatic protection is required when component replacement is required.
•The monitor meets ROHS, please use Lead-free solder wire for soldering.
•If capacitor need change, please check polarity match PCB print.
•If capacitor need to replace, must check specification and part number whether
match the BOM and location.
•If capacitor 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 do function test to check PSU 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.