HP Z34c G3 Manual

Maintenance and Service Guide
Z34c G3 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.
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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: January 2022
Document Part Number:
M44761- Z34c G3-MSG-V1
Assembly part number: M44761-001
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”.

1
Table of Contents
1. Getting started .......................................................................................................................................................................... 2
Important safety information ............................................................................................................................................. 2
Important service information and precautions............................................................................................................... 3
RoHS (2002/95/EC) requirements ................................................................................................................................... 3
General descriptions.......................................................................................................................................................... 4
Firmware updates .............................................................................................................................................................. 4
Before returning the repaired product to the customer................................................................................................. 4
2. Monitor features........................................................................................................................................................................ 5
Features............................................................................................................................................................................... 5
Front components............................................................................................................................................................... 7
Rear components............................................................................................................................................................... 8
Locating the serial number and product number ........................................................................................................... 9
3. Illustrated parts catalog ......................................................................................................................................................... 10
How to order parts............................................................................................................................................................ 11
4. Removal and replacement procedures ............................................................................................................................... 12
Preparation for disassembly ........................................................................................................................................... 12
Rear Cover........................................................................................................................................................................ 13
Power board...................................................................................................................................................................... 17
Power board- Capacitor repair ....................................................................................................................................... 18
Connector repair............................................................................................................................................................... 21
HDMI Connector repair- J401............................................................................................................................. 23
RJ45 Connector repair- JF1................................................................................................................................ 24
USB Type B Connector repair- JA1 ................................................................................................................... 25
Function Test: ................................................................................................................................................................... 26
Support and Troubleshooting ......................................................................................................................................... 27
Index .................................................................................................................................................................................. 28

2
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.

3
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.

4
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.

5
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:
Display features
●86.72 cm (34.14 in) diagonal viewable screen area with 3440 × 1440 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 active matrix and in-plane switching (IPS)
●Wide color gamut to provide coverage of sRGB color spaces
●Nonglare panel with an LED backlight
●Wide viewing angle to allow viewing from a sitting or standing position, or moving
from side to side
●Tilt, swivel, and height adjustment capabilities
●Integrated KVM (Keyboard/Video/Mouse) switch with keyboard-based input
switching
●Dual Picture in Picture (PiP) and Picture beside Picture (PbP) functionality to
enable the DisplayPort, HDMI, and USB Type-C inputs to be viewed in each half
of the screen (select products only)
●On-screen display (OSD) adjustments in several languages for easy setup and
screen optimization
●Color space presets for sRGB, P3 D65, and BT.709
●Energy saver feature to meet requirements for reduced power consumption
●Security cable slot on the rear of the monitor for an optional security cable
●Cable management feature for placement of cables and cords
Connectors
●DisplayPort™ video input (cable included)
●High-Definition Multimedia Interface™ (HDMI) video input
●USB Type-C® port
●USB hub with one USB Type-C port that connects to the computer (upstream)
and four USB ports that connect to USB devices (downstream)
●USB Type-C–to–USB Type-C DisplayPort Alt Mode, up to 90 W power delivery
cable (select products only)
●USB Type-C–to–USB Type-A cable (select products only)
●DisplayPort cable (select products only)

6
●Plug and Play capability, if supported by your operating system
●RJ-45 (network) jack (select products only)
Monitor stand
●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
●Support for a mounting bracket to attach the monitor to a workstation
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.

7
Front components
To identify the power button on the front of the monitor, use this illustration.
Table 1-1: Front components and their descriptions
(1-2)
Power button (with power light)
(3)
USB port Battery charging 1.2
(4)
Microphones
(5)
Camera light
(6)
RGB lens
(7)
IR lens
(8)
IR lights

8
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
Description
(1)
OSD control
Activates the OSD buttons so that the button labels
appear on the right side of the screen.
(2)
Security cable slot
Connects an optional security cable.
(3) Power connector Connects the 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.
(6)
USB Type-C port with
DP Alt Mode 1.4, USB
upstream data, and
maximum power
delivery up to 90 W
Connects the USB Type-C cable to a source device
such as a computer.
Charges most USB Type-C devices even when the
monitor is in sleep mode.
NOTE: The monitor must be set to Performance
Mode.
This port also enables the USB Type-A ports to
perform their functions.
(7)
RJ-45 (network) jack
Connects an RJ-45 Ethernet network cable to the
monitor.
(8)
USB Type-B
port(upstream)
Connects the USB Type-B cable to a source device,
such as a computer, or game console.
NOTE: A USB Type-B cable or a USB Type-C cable
must be connected from the source device to the
monitor to enable USB Type-A ports on the monitor.
(9)
KVM keyboard port
Connects a keyboard to the display.
(9-10)
USB port
Connects a USB cable to a peripheral device, such
as a keyboard, mouse, or USB hard drive.

9
Locating the serial number and product number
The SPEC label is located on the rear of the monitor. The serial number and product
number are located on a SPEC label. You may need these numbers when contacting
HP about the monitor model.
For worldwide models (except India):
For India:

10
3. Illustrated parts catalog
To identify the monitor major components, use this illustration and table.
Table 2-1: Monitor major components and their descriptions
Item Description Qty
1
DECO-CHIN
1
2
Speaker
1
3
PANEL
1
4
ASSY RC
1
5
MID FRAME
1
6
SHD MAIN
1
7
WEBCAM MODULE
1
8
Main BD
1
9
Power BD
1
10
LED DRV BD
1
11
HINGE
1
12
CTRL BD
1
13
CAP JOYSTICK
1
1
2
3
4
5
6
7
8
9
10
11
19
12
13
14
15
16
17
18

11
How to order parts
The HP authorized repair center can purchase power board from HP.
Power board:
Description
HP Spares
Part Number
Manufacturer Part
Number
SPS-IPS Z34c G3, LGD 5E.58402.001
N06322-001
5E.58402.001
Capacitors and connectors available for purchase from EU distributor
•Farnell: Farnell UK - Electronic Components Distributor
•RS Component: Capacitors | RS Components (rs-online.com)
Capacitors by Distributor:
Component
Description
Location
Component
Distributor
Distributor
Capacitor 470 µF
25V 10*12.5 10K C706; C707
RS
25YXJ470M10X12.5
Farnell
25ZLH470MEFC10X12.5
Capacitor 1000 µF
25V 10*20 10K
C711; C712; C713;
C714;
RS
NRZJ102M25V10X20F
Farnell
25ZLH1000MEFC10X20
Connectors by Distributor:
Component
Description
Location Identifier
Component
Distributor
Part number of
Manufacturer/ Distributor
HDMI J401
RS
Molex 47659-1101
RJ45 JF1 Farnell
AMPHENOL ICC
GSB422137EU
USB Type B JA1 Farnell
AMPHENOL ICC
GSB422137EU
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/
14
WALL-MOUNT BKT
1
15
CLMN
1
16
BASE
1
17
USB BD
1
18
LENS BD
1
19
SENSOR BD
1

12
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.
Use this information to properly prepare to disassemble and reassemble the monitor.
1) Clean the room for disassembly.
2) Identify the disassembly area.
3) 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.
4) Be sure to have the following equipment and materials:
•Press fixture
•Working table
•Screwdriver
•Knife
•Gloves
•Cleaning cloth
•ESD protection
•Curve sponge Jig- CS.5J584.001
During assembly and disassembly, please place curve sponge jig to avoid
damaging the panel.
Item Qisda P/N Description Photo
1 CS.4G584.001 SPONGE JIG Z34c G3 CURVE

13
Disassembly procedure
Rear Cover
S1
1) Disassemble RC from the monitor and pull out BTN BD wire from the Main BD.
PICTURE 1
S2
1) Unlock 6 screws and disassemble Hinge from the SHD as the picture 1.
2) Tear off the TOP Mylar, interface Mylar and Right Mylar from the SHD as the
picture 1.
3) Pull out sensor BD cable and camera wire from the Main BD as the picture 2.
4) Disassemble sensor BD from the camera and pull out sensor BD cable from the
sensor BD as the picture 2.
5) Tear off conduct tape and then pull out LENS BD wire and SPK wire from the
Main BD as the picture 3.
6) Unlock 5 screws from the SHD as the picture 3.
7) Tear off the long acetate tapes and pull out the FFC, EDP and driver BD wire
from the Main BD.
PICTURE 1

14
PICTURE 2
.
PICTURE 3
S3
1) Unlock 2 screws and disassemble USB BD from the MF as the picture 1.
2) Tear off the conduct sponge from the MF as the picture 2.
3) Tear off 4 acetate tapes from Panel as the picture 3.
4) Tear off the acetate tape from the camera wire as the picture 4.
5) Unlock 20 screws from the MF as the picture 3.
6) Unlock 6 screws and disassemble the camera from the MF as the picture 4.
PICTURE 1 PICTURE 2

15
PICTURE 3
PICTURE 4
S5
1) Unlock 4 screws from the DECO as the picture 1.
1) Disassemble MF from the monitor as the picture 1.
2) Unlock 4 screws from the SPK as the picture 2.
3) Disassemble Power BD Mylar from the Power BD as the picture 3.
PICTURE 1
PICTURE 2

16
PICTURE 3
S6
1) Unlock 11 PCBA screws as the picture 1.
2) Disassemble Main BD from the SHD and pull out Power BD wire from the Main BD.
3) Disassemble Power BD from the SHD and pull out power cord from the Power BD.
PICTURE 1
Main BD
Main BD
Driver BD
Power BD
1
11
6
7

17
Power board
•The power board part number is 5E.58402.001. This board is a direct replacement
for 5E.58402.001
•Locate PN on the red frame as follow image.
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 Power board function is ordinary
Power BD PN
Power Board
Primary Side
Primary Side

18
Power board- Capacitor repair
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.
(2) The professional repairer is covered by insurance covering liabilities resulting
from its activity, regardless of whether this is required by the Member State.