hp 738pu 7.5 Inch WQHD Thunderbolt 4 Monitor User Guide

hp 738pu 7.5 Inch WQHD Thunderbolt 4 Monitor

Specifications

• Model: HP Series 7 Pro 738pu
• Processor: AMD
• Bluetooth: Owned by its proprietor and used by HP Inc. under license
• Graphics: NVIDIA
• USB Type-C: Registered trademark of USB Implementers Forum
• DisplayPort: Trademark owned by the Video Electronics Standards Association (VESA)

Product Usage Instructions

Safety Information

Before servicing the product, ensure your working environment is dry, clean, and meets safety requirements.

Follow these safety guidelines:

• Ensure the safety of others while servicing the product.
• Use proper safety devices and approved tools for servicing.
• Check that the power is disconnected before opening the product’s cabinet.
• Handle electrical components with care to prevent electrostatic discharge.
• Avoid disassembling or exposing batteries to high temperatures.
• Refer to government regulations for battery recycling or disposal.

Service and Maintenance

Only trained service personnel familiar with the product should perform service or maintenance.

Follow these steps:

1. Read and understand the important safety information provided.
2. Disconnect the power cord before opening the product to prevent damage.
3. Adhere to proper service procedures and precautions for effective maintenance.

FAQ

Q: Who should service the product?

A: Only trained service personnel familiar with the HP Series 7 Pro 738pu model should service it to ensure proper maintenance and safety.

Q: What precautions should be taken before servicing the product?

A: Before servicing, ensure the working environment is safe, use approved tools, disconnect power, handle components carefully, and follow ESD safety procedures.

Q: How should batteries be handled?

A: Do not disassemble or expose batteries to high temperatures. Refer to government requirements for proper recycling or disposal methods.

SUMMARY

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

© Copyright 2021 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 outlined 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 2024
• Document Part Number: N56082-HP Series 7 Pro 738pu-MSG-V1
• Assembly part number: N56082-001

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”.

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 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 it 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 a 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 compliant, the replacement parts can be non-ROHS compliant. If the original parts are RoHS compliant, the replacement parts MUST be RoHS compliant.
• 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.

Monitor features

• This chapter provides an overview of the monitor’s features.
• Depending on the model, your monitor might include the following features.

Display features

• 95,2 cm/37,5 in diagonal viewable screen area with 3840 x 1600 resolution (HSD-0168-W), plus full-screen support for lower resolutions; includes custom scaling for maximum image size while preserving the original aspect ratio
• 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 mode (Select models)
• Removable stand for flexible monitor head mounting solutions
• Plug and Play capability, if supported by your operating system
• 100 mm integrated VESA mounting
• Security cable slot on the rear of the monitor for an optional security cable
• On-screen display (OSD) adjustments in several languages for easy setup and screen optimization
• HP Display Assistant software for adjusting monitor settings and enabling theft deterrence features
• High-bandwidth Digital Content Protection (HDCP) copy protection on all digital inputs
• Energy saver feature to meet requirements for reduced power consumption
• ALS Sensor automatically adjusts monitor brightness

Connectors

• DisplayPort™ video input (cable included)
• DisplayPort™ video output (cable included)
• HDMI video input
• Two USB Type-C® Thunderbolt™ ports (cable included in select regions)
• RJ-45 (network) jack
• Four USB ports (downstream)
• Plug and Play capability, if supported by your operating system

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 Setup & User Guides.

Front components

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

Table 2-1 Front components and their descriptions

recognition.
(5)| User-proximity sensor| Uses the Auto Lock and Awake feature to monitor your presence in front of the computer to save power and add security. When you step away from the computer, the proximity sensor puts the computer into the Sleep state. When you return to the computer, your computer recognizes you and wakes the computer automatically. Auto Lock and Awake are turned on by default.

Rear and side components

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

Table 2-2 Rear components and their descriptions

or game console.
(4)| DisplayPort In connector| Connects the DisplayPort cable to a source device such as a computer or game console.
(5)| DisplayPort Out connector| Connects the DisplayPort cable from the monitor to a secondary monitor.
(6)| USB Type-C port with DP Alt Mode 1.4, USB upstream data, and maximum power delivery up to 65 W| Connects the USB C-C cable to a source such as a computer for DP Alt mode and USB data.
(7)| TB4 Out connector| Connects a TB4 cable to a TBT4 monitor or TBT4 device and supports PD 5 V @ 3 A.
(8)| TB4 In connector| Connects the TB4 cable from the monitor to a source device such as a computer or game console and supports up to PD 20 V @ 5 A.
(9)| RJ45 connector| Connects an RJ-45 Ethernet network cable to the monitor.
(10,12)| USB Type-A port (4) (downstream)| Connect USB cables to peripheral devices, such as a keyboard, mouse, or USB hard drive, and provide data transfer.
(11)| USB Type-A port Battery charging 1.2 (downstream)| Connects a USB cable to a peripheral device, such as a keyboard, mouse, or USB hard drive, and supports battery charging 1.2.
(13)| USB Type-C port with 15W charging (downstream)| Connects the USB Type-C cable to a peripheral device, and charge peripheral devices.
NOTE: This port provides data transfer only 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

Illustrated parts catalog

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

Table 3-1: Monitor major components and their descriptions

Item| Description| Part number| Qty
1| #Front logo 738pu| | 1
2| #ASSY Display Chin 738pu| | 1
3| #Lens 738pu| | 1
4| #ASSY Panel 738pu| | 1
5| #ASSY Middle frame 738pu| | 1
6| #ASSY Power key BD 738pu| | 1
7| #Power key 738pu| | 1
8| #ASSY Bottom USB BD 738pu| | 1
9| #ASSY Speaker 738pu| | 1
10| #AC socket 738pu| | 1
11| # ASSY Power BD 738pu| | 1
12| #ASSY Hinge bracket 738pu| | 1
13| #ASSY Rear cover 738pu| | 1
14| #OSD center key 738pu| | 1
15| #OSD around key 738pu| | 1
16| #ASSY Base 738pu| | 1
17| #ASSY Stand 738pu| | 1
18| #Rear Logo 738pu| | 1
19| #ASSY Hinge 738pu| | 1
20| #ASSY Main chassis 738pu| 1
---|---|---
21| #ASSY Audio BD 738pu| 1
22| #ASSY Interface BD 738pu| 1
23| #ASSY Driver BD 738pu| 1
24| #ASSY ALS BD 738pu| 1
25| #ALS lens 738pu| 1

How to order parts

The HP-authorized repair center can purchase the power board from HP.

Power board

• Capacitors and connectors are available for purchase from the following EU distributors.
• Digi-Key(RUBYCON ALU CAP): www.digikey.com

Capacitors by distributor

Component description| Location| Component distributor| Distributor part number
---|---|---|---
CAP EL 470U 35V M RT5 10X16 MG/HX SUSCON| AC651,AC652,AC653,AC654,AC655,AC656,A C657| SUSCON| MG035M471G16T014P50 R HX035M471G16T014P50 R
| |
CAP EL 470U 35V M P5 10*16 ZH CAPXON| | CAPXON| ZH471M035G160ETABHR

Connectors by manufacturer

Component description| Location identifier| Component distributor| **Distributor part number| Remark
---|---|---|---|---
** HDMI| HDMI1| CUI Devices| https://www.digikey.com PN: HD12-19-SMT-TR| Modify the rear cover I/O metal and plastic. Modify the Pin to SMT type
DP| DP1 DP2| ** Molex| [ https://www.digikey.com ](https://www.digikey.com/)** PN: 2041441-1|
USB-C| USBC3| ** TE Connectivity| [ https://www.digikey.com ](https://www.digikey.com/)** PN: 2385692-1|
USB-C| ****

USBC1 USBC2

| Molex| https://www.digikey.com PN: DX07S024WJ3R400 900-2171840001DKR-ND| Cut off the Pin as below
---|---|---|---|---
USB-A| USB1 USB2 USB3 USB4| ****

Molex

| https://www.digikey.com PN: 0484080003|
USB-A| USB5| Molex| ****https://www.digikey.com PN: WM10413TR-ND| Modify the rear cover I/O metal and plastic. Cut off the Pin as below

• 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/

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.

Rear Cover

• Before removing the Rear Cover, follow these steps.
• Prepare the monitor for disassembly. See Preparation for disassembly.

1. Remove the Stand Base From the Display Head by pushing the release button.
2. Remove Rear Cover From Display Head: Lose all the hooks by hand for pulling the rear cover, and disconnect the key cable away from the connector.
3. Remove OSD keyboard from the rear cover: remove 1pcs screw
4. Disconnect all the cables from the main chassis.
5. Remove the Speaker from the Middle frame by removing 6pcs screws
6. Remove Hinge from Display Head by removing 4 screws. Remove the bottom USB board by removing 1pcs screw
7. Remove Main Bracket Assy from Display Head: remove 4pcs screws and then disconnect EDP cable from the panel
8. Remove the middle frame from the display head: remove 21pcs screws
9. Remove Power keyboard and ALS Board from the Middle Frame
10. Remove all the circuit board From bracket Assembly by unlocking 15pcs screws

Power board

The power board part number is 755.0AT10.0001.

Before removing the power board, follow these steps:

Prepare the monitor for disassembly. See Preparation for disassembly.

Remove the power board:

1. The HP Series 7 Pro 738pu G3 power board connector position is as follows.
2. Locate the part number location on the board.
3. Pin solder with soldering iron and absorber. NA
4. Lift the connector up and away from the PCB. NA

Connector repair

• This procedure includes HDMI, Display Port, USB-C, TBT4, RJ45, and USB-A connectors.
• The connectors are on the main board (board part number 7ZB.0AT01.0005).

The connector identifiers are as follows:

Before repairing connectors, follow these steps:

• Prepare the monitor for disassembly. See Preparation for disassembly.

HDMI connector HDMI1

Repair the HDMI connector:

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

DP connector DP1/DP2

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. Lift the DP connector from the PCB.
3. Place the new component on the PCB. Be sure that it matches the PCB footprint.
4. Solder the new component.

USB-C connector USBC1/USBC2

Repair the USB-C connector.

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

RJ45 connector RJ1

Repair the RJ45 connector.

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

USB-A connector USB1/USB2/USB3/USB4/USB5

Repair the USB-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 USB-A connector from the PCB.
3. Place the new component on the PCB. Be sure that it matches the PCB footprint.
4. 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 the image displays and the sound plays correctly on the monitor.| Computer or DVD player
DP test| Confirm whether the image displays and the sound plays correctly on the monitor.| Computer or DVD player
DP test| Confirm whether the image displays and sound plays correctly on the monitor.| Computer or DVD player
USB-C Alt-Mode| Confirm whether the image displays and the sound plays correctly on the monitor.| Computer or Notebook
USB-C PD

Function

| Confirm PDO/Charging working normally.| Notebook
USB Hub test| Confirm the USB function of 3-USB Type-A and 1-USB Type-C working normally.| Computer or Notebook
---|---|---
Audio test| Change volume and balance to confirm whether a volume is smooth and loud enough.| Soundbar

Support and troubleshooting

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

Table 4-2: Solving common problems

Problem| Possible cause| Solution
The screen is blank or the video is flashing.| The power cord is disconnected.| Connect the power cord.
| The 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.

| The video cable is improperly connected.| Connect the video cable properly.
| The system is in Sleep mode.| Press any key on the keyboard or move the mouse to exit Sleep mode.
| The 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 ofthe computer’s onboard video sources.
The 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 the screen.| The monitor video cable is disconnected.| Connect the appropriate video signal cable between the computer and the monitor. Be sure that the computer’s power is off while you connect the video cable.
Input Signal Out of Range is displayed on the 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| The monitor’s power-saving control is disabled.| Open the OSD menu and
not enter into a low-power sleep state.| | 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 for 10 seconds 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.

The camera and USB ports do not work, but the monitor is turned on.| There is no upstream USB connection.| Be sure that the host computer is connected to the monitor with a USB Type-C to USB Type-C cable or a USB Type-C to USB cable.

References

• partsurfer.com
• partsurfer.com/
• support.hp.com
• DigiKey - Electronic Components Distributor
• DigiKey - Electronic Components Distributor
• hp.com/support
• HP PartSurfer
• DigiKey - Electronic Components Distributor
• DigiKey - Electronic Components Distributor
• TE Connectivity AMP Connectors Distributor | DigiKey
• EET International

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