hp Series 7 Pro 23.8 inch FHD Monitor User Guide

: August 16, 2024
: HP

hp logo1

Maintenance and Service Guide

HP Series 7 Pro 724pu model

SUMMARY

This guide provides information about spare parts, removal and replacement of parts, diagnostic tests, problem troubleshooting, and more.

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: January 2024

Document Part Number: N70015-HP Series 7 Pro 724pu-MSG-V1

Assembly part number: N70015-001

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 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.
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

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.
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.

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

61 cm (24 in) diagonal viewable screen area with 1920 × 1200 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
Pivot capability to rotate the monitor head from landscape to portrait orientation
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 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)
DisplayPort video output (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, 100 W power delivery cable (select products only)
DisplayPort cable (select products only)
HDMI cable (select products only)
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, 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.

Front components

To identify the components on the front of the monitor, use this illustration and table.

Rear and side components

To identify the components on the rear of the monitor, use this illustration and table.

Table 2-1 Rear and side components and their descriptions

Component	Description
(1)	Joypad
(2)	Security cable slot
(3)	Master power switch
(4)	Power connector
(5)	HDMI port

computer.
(6)| DisplayPort connector| Connects the DisplayPort cable to a source device such as a computer.
(7)| DisplayPort connector OUT| Connects the DisplayPort cable from the monitor to a secondary monitor.
(8)| USB Type-C port with DP Alt Mode 1.4,USB upstream data, and maximum power delivery up to 100 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.

(9)| RJ-45 (network) jack| Connects an RJ-45 Ethernet network cable to the monitor.
(10)| USB port| Connects a USB cable to a peripheral device, such as a keyboard, mouse, or USB hard drive.
(11)| USB port
Battery charging 1.2| Connects a USB cable to a peripheral device, such as a keyboard, mouse, or USB hard drive and supports battery charging 1.2.
(12)| USB port| Connects a USB cable to a peripheral device, such as a keyboard, mouse, or USB hard drive.
(13)| USB port
Battery charging 1.2| Connects a USB cable to a peripheral device, such as a keyboard, mouse, or USB hard drive and supports battery charging 1.2.

Locating the serial number and product number

The serial number and product number are located on the rear of the monitor. You may need these numbers when contacting HP about the monitor model.

For All Regions:

Barcode label & Spec label

hp Series 7 Pro 23.8 inch FHD Monitor - a4

Service label is 45×15mm, R=2mm
QR code size is 11.75mm×11.75mm
QR code just include Serial Number, eg’CNC0450001′
Serial No. Font is Arial Bold 6pt
The rest of variate data font is Arial 5.7pt

3 Illustrated parts catalog

To identify the monitor major components, use this illustration and table.

hp Series 7 Pro 23.8 inch FHD Monitor - b1

Table 3-1: Monitor major components and their descriptions

Item

| Description|

Qty

---|---|---

1

| LCM Module|

1

2

| Main Chassis Bracket|

1

3

| Power Board|

1

4

| Interface Board|

1

5

| Scrw M3*7.5 Tapping Metal|

1

6

| Scrw_Cap Head_M4*8_CHQ1018|

3

7

| Power Mylar|

1

8

| SCRW_tapping_wafer_M3*8.0_White Ni|

2

9

| Scrw Mac Wafer M30.5L4NI|

4

10

| IO Cover|

1

11

| Scrw MAc Wafer M30.5L4NI|

3

12

| Bezel Bottom|

1

13

| Power_Lens|

1

14

| Power_Key|

1

15

| Power Key Board|

1

16

| Scrw_Tapping_None_Flat_0.2mm_Head|

2

17

| Scrw_M2×2.7×0.8T|

3

18

| Scrw_M2×2.8|

2

19

| Rear_Cover|

1

20

| Side_USB_Holder|

1

21

| Side USB Board|

1

22

| Scrw_Tap_Pan_M3*0.6_NI|

2

23

| OSD_Holder|

1

24

| OSD Holder Board|

1

25

| OSD_Key|

1

26

| Scrw_Tap_Pan_M3*0.6_NI|

2

27

| HP Logo|

1

28

| Assy Hinge for|

1

29

| Scrw_Mec_Flat_M4L6_NI_STE|

4

30

| Pivot Cover for|

1

31

| Assy Stand Column|

1

32

| Assy Base|

1

33

| Driver Board|

1

34

| SCRW_MACHINE_M3*4|

3

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

---|---|---
PWR BD 724pu AUO DIP C5|

N98496-001

|

755.A3902.A001

Capacitors and connectors are available for purchase from the following EU distributors:

Digi-Key (RUBYCON ALU CAP): www.digikey.com
CAPXON: www.capxongroup.com

Capacitors by distributor

Component description| Location| | Component distributor| Distributor part number
---|---|---|---|---
CAP EL 330U 35V M
10X12.5 ZLH RUBYCON| AC714,AC715,AC717, AC718,AC719 | | RUBYCON| 35ZLH330MEFCT8 10X12.5
CAP EL 330U 35V M
1012.5 P5 CAPXON| | CAPXON| ZH331M035G125ETABRZ
1012.5

Connectors by manufacturer

Component description| Location identifier| Component distributor| Distributor part number| Remark
---|---|---|---|---
HDMI| HDMI1| Switchcraft Inc.| https://www.digikey.com

PN:
137-RAHHD19TR-ND

|

Modify the rear cover I/O metal and plastic.

DP| DP1
DP2| Molex| https://www.digikey.com

PN:
WM14328DKR-ND

|

Only DP1.1
Modify the rear cover I/O metal
Cut off the through hole

USB-C| USBC| Molex| https://www.digikey.com

PN:
900-2171840001DKR-ND

| Cut off the Pin as below

hp Series 7 Pro 23.8 inch FHD Monitor - b3

RJ45| RJ45| Adam Tech| https://www.digikey.com

PN:
2057-MTJ-88TX1-LV-ND

| 1. Modify the pin type as below.

2. Change the length from 20.75mm to 23.5mm

hp Series 7 Pro 23.8 inch FHD Monitor - b5

3. Modify the rear cover I/O metal and plastic.

USB-A| USB2
USB3| Molex| https://www.digikey.com

PN:
WM10413TR-ND

|

Cut off the Pin as below

hp Series 7 Pro 23.8 inch FHD Monitor - b6

USB-A| USB4
USB5| Molex| https://www.digikey.com

PN:
WM10413TR-ND

|

Modify the rear cover I/O metal and plastic.
Change the height from 15mm to 11.5mm
Cut off the Pin as below

hp Series 7 Pro 23.8 inch FHD Monitor - b7

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/

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.

Read the “Important safety information” and “Important service information and precautions” sections in the “Getting started” chapter of this guide.
Clean the room for disassembly.
Identify the disassembly area.
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.
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:

Rear Cover

Before removing the Rear Cover, follow these steps:

▲ Prepare the monitor for disassembly. See Preparation for disassembly on page 12.

Pull the release button to remove Stand Base From Display Head
Remove Rear Cover From Display Head: Use the tool to remove the hinge cover, then Release the four screws from back bracket and remove the hinge, then loose all the hooks by hand for pulling the rear cover
Remove USB BD Screws to remove USB BD: Remove the EMI gasket, then loose the two hooks by hand, then remove the cable
Release OSD key BD from rear cover
Remove IO cover from display head(Remove three screws and loose three hooks by hand)
Remove Bracket Assembly From Display Head: disconnect all inside cable, then remove the four screws from the back bracket
Remove bezel bottom ASSY from display head(Remove five screws)
Remove Power Key Board from Bezel bottom assy.(Remove two screws)
Disassemble Bracket Assembly: remove black Mylar, then release the two AC screws from bracket, Release the 7pcs screws for releasing the power board and interface board.

Power board

The power board part number is 755.A3902.A001.

Before removing the power board, follow these steps:

▲ Prepare the monitor for disassembly. See Preparation for disassembly on page 12.

Remove the power board:

The HP Series 7 Pro 724pu power board connector has no connector:

Warning: After unplugging the power supply, the capacitance is till charged, do not touch and discharge the capacitor.

Locate the part number location on the board.
Pin solder with soldering iron and absorber.
NA
Lift the connector up and away from the PCB.
NO

Connector repair

This procedure includes HDMI, Display Port, Mini Display Port, USB-C, USB-A and RJ45 connectors.

The connectors are on the main board (board part number 7ZB.A3901.0011).

The connector identifiers are as follows:

Connector	Location
HDMI	HDMI1
DP	DP1,DP2
USB-C	USBC
RJ45	RJ45
USB-A	USB2,USB3
USB-A	USB4,USB5

Before repairing connectors, follow these steps:

▲ Prepare the monitor for disassembly. See Preparation for disassembly on page 12.

HDMI connector HDMI1

Repair the HDMI connector:

Use a soldering iron and a de-soldering pump to remove as much solder as possible from the pin.
Use a hot air gun to melt the solder on the pins.
Lift the HDMI connector from the PCB.
Place the new component on the PCB. Be sure that it matches the PCB footprint.
Solder the new component.

DP connector DP1 DP2

Repair the DP connector:

Use a soldering iron and a de-soldering pump to remove as much solder as possible from the pin.
Use a hot air gun to melt the solder on the pins.
Lift the DP connector from the PCB.
Place the new component on the PCB. Be sure that it matches the PCB footprint.
Solder the new component.

USB-C connector USBC

Repair the USB-C connector:

Use a soldering iron and a de-soldering pump to remove as much solder as possible from the pin.
Use a hot air gun to melt the solder on the pins
Lift the USB-C connector from the PCB.
Place the new component on the PCB. Be sure that it matches the PCB footprint.

Solder the new component

RJ45 connector RJ45

Repair the RJ45 connector:

Use a soldering iron and a de-soldering pump to remove as much solder as possible from the pin.
Lift the RJ45 connector from the PCB.
Place the new component on the PCB. Be sure that it matches the PCB footprint.

Solder the new component

USB-A connector USB2/USB3

Repair the USB-A connector:

Use a soldering iron and a de-soldering pump to remove as much solder as possible from the pin.
Lift the USB-A connector from the PCB.
Place the new component on the PCB. Be sure that it matches the PCB footprint.
Solder the new component.

USB-A connector USB4/USB5

Repair the USB-A connector:

Use a soldering iron and a de-soldering pump to remove as much solder as possible from the pin.
Lift the USB-A connector from the PCB.
Place the new component on the PCB. Be sure that it matches the PCB footprint.
Solder the new component.

Function test

After repair, be sure to confirm that all functions are working.

Table 4-1: Function test

Test item	Operating description	Tool used
HDMI test	Confirm whether image displays	Computer or DVD player
DP test	Confirm whether image displays	Computer or DVD player
DP out test	Confirm whether image displays	Computer / DVD player and other

Support and troubleshooting

The following table lists possible problems, the possible cause or each problem, and the recommended solutions.

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 turned 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.

Master power switch is set to off.| Set the master power switch on the rear of the monitor to the On position.
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 menu. Set Auto-Switch Input to Off and manually select the input.

Or

Replace the video card or connect the video cable to one of the computer’s on- board video sources.

Image appears blurred, indistinct, or too dark.| Brightness is too low.| Open the OSD menu and select Brightness to adjust the brightness scale as needed.
Check Video Cable is displayed on screen.| Monitor video cable is disconnected.| Connect the appropriate video signal cable between the computer and monitor. Be sure that the computer power is off while you connect the video cable.
Input Signal Out of Range is displayed on screen.| Video resolution and/or refresh rate are set higher than what the monitor supports.| Change the settings to a supported setting.
The monitor does not enter into a low-power sleep state.| The monitor’s power saving control is disabled.| Open the OSD menu and select Power , select Auto-Sleep Mode and set auto-sleep to On.
“OSD Lockout” is displayed.| The monitor’s OSD lock function is enabled.| Press and hold the Menu button to disable the OSD lockout function.
“Power Button Lockout” is displayed.| The monitor’s power button is locked.| Press and hold the Power button for 10 seconds to disable the power button lock function.