hp M34D WQHD Curved Monitor User Guide

hp M34D WQHD Curved Monitor

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

1. A professional repairer must have the technical competence to repair electronic displays and comply with the applicable regulations for repairers of electrical equipment in the Member States where the repairer operates. Reference to an official registration system as professional repairer, where such a system exists in the Member States, shall be accepted as proof of compliance.
2. A professional repairer must have insurance that covers liabilities resulting from repairs, regardless of whether required by the Member State.

RoHS (2002/95/EC) requirements

Applied to all countries that require RoHS.

The RoHS (Restriction of Hazardous Substance in Electrical and Electronic Equipment Directive) is a legal requirement by the EU (European Union) for the global electronics industry sold in the EU and other countries. Any electrical and electronics products launched in the market after June 2006 should meet this RoHS requirement. Products launched in the market before June 2006 are not required to be compliant with RoHS parts. If the original parts are not RoHS complaint, the replacement parts can be non-ROHS complaint. If the original parts are RoHS compliant, the replacement parts MUST be RoHS complaint.
If product service or maintenance requires replacing parts, confirm the RoHS requirement before replacement.

General descriptions

This manual contains general information. There are two levels of service:
Level 1: Cosmetic/appearance/alignment service
Level 2: Circuit board or standard parts replacement

Firmware updates

Firmware updates for the monitor are available at support.hp.com. If no firmware is posted, the monitor does not need a firmware update.

Before returning the repaired product to the customer

Perform an AC leakage current check on exposed metallic parts to be sure the product is safe to operate without the potential of electrical shock. Do not use a line isolation transformer during this check.
Measurements that are not within specified limits present a possible shock hazard. You must check and repair the product before returning it to the customer.

Monitor features

This chapter provides an overview of the monitor’s features.

Features

Depending on the model, your monitor might include the following features:

• 86.36 cm (34 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 VA type
• Skype for Business–certified popup camera and microphone for online collaboration (select models)
• Wide color gamut to provide coverage of sRGB color spaces
• Antiglare panel with an LED backlight
• Wide viewing angle to allow viewing from a sitting or standing position, or moving from side to side
• Tilt and height adjustment capabilities
• Four on-screen display (OSD) buttons: one Menu button and three assignable buttons that you can reconfigure to quickly allow selection of the most commonly used operations
• On-screen display (OSD) adjustments in several languages for easy setup and screen optimization
• Color space presets for Neutral (6500)
• 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
• DisplayPort™ video input (cable included)
• High-Definition Multimedia Interface™ (HDMI) video input
• Audio-out (headphone) jack
• SB Type-C® port
• USB hub with one USB Type-C and one Type-B port that connects to the computer (upstream) and four USB ports that connect to USB devices (downstream)
• DisplayPort cable provided
• Plug and Play capability, if supported by your operating system
• 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.

Table 1-1: Front components and their descriptions

Amber: The monitor is in a reduced power state because of inactivity.

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

navigate through the menu. The function light icons indicate the default button functions. You can reassign the function buttons to quickly select the most commonly used operations.
3| Power button| Turns the monitor on or off.
 |  | NOTE: Be sure that the master power switch on the monitor is in the On position to turn on the monitor.
4| Master power switch| Turns the monitor on or off.
5| Power connector| Connects the power cord.
6| HDMI port| Connects the HDMI cable to a source device such as a computer or game console.
7| DisplayPort connector| Connects the DisplayPort cable to a source device such as a computer or game console.
8| USB Type-C port (upstream)| Connects a USB Type-C cable to a source device such as a computer or game console. This USB Type-C port can function as a DisplayPort audio/video input or as a USB 3.0 connection. It can also be used to deliver up to 65 W of power to a device such as a smartphone. Power outputs are 5 V/10 V/12 V/15 V/20 V to achieve a 65 W output. This port also enables the USB Type-A ports to perform their functions.
 |  | NOTE: Use a standard USB Type-A charging cable or cable adapter (purchased separately) when charging a small external device.
---|---|---
9| USB Type-B upstream port| Connects a USB Type-B cable to a source device.
10| USB port with HP Sleep and Charge| Connects a USB device, provides high- speed data transfer, and charges small devices such as a smartphone, even when the computer is 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.
11| USB port| Connects a USB device, provides high-speed data transfer, and (for select products) charges small devices when the computer is on or in Sleep mode.
12| USB port (2)| Connects a USB device, provides high-speed data transfer, and (for select products) charges small devices when the computer is on or in Sleep mode with OSD Performance mode on.
13| Audio-out (headphone)| Connects optional powered stereo speakers, headphones, earbuds, a headset, or a television audio cable.

WARNING! To reduce the risk of personal injury, reduce the volume before using headphones, earbuds, or a headset. For additional safety information, see the Product Notices provided in your documentation kit.

14| Security cable slot| Connects an optional security cable.

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 Safety label. You may need these numbers when contacting HP about the monitor model.

Illustrated parts catalog

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

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:

• Farnell: Farnell UK – Electronic Components Distributor
• RS Component: Capacitors | RS Components (rs-online.com)
• United Chemi-Con: Digikey Electronics

Capacitors by distributor

Component description| Location| Component distributor| Distributor part number
---|---|---|---

EC 680uF 20% 35V 12.5*20 3000 hr 2A ENB1

| C9102| ****

United Chemi-Con

| ****

EGPA350ELL681MK20S

C9104
C9103
C9130

Connectors by manufacturer

Component description| Location identifier| Component distributor| Distributer part number
---|---|---|---
HDMI| CN501| RS| SD-47151-001(Molex)
DisplayPort| CN503| Farnell| DP1RD20JQ3(JAE)
USB Type-C| CN5101| RS| DX07S024JJ2R130(JAE）
USB B TYPE| CN1001| RS| 692221030100

(Wurth Elektronik）

USB 3.0| CN1004 CN1005| Farnell| 48406-0001(MOLEX）
PHONE JACK| CN605| RS| 913-1021(RS PRO)
---|---|---|---

NOTE: Rear cover and chassis need to be modified to hold connector. Connector may need modifications to meet functional, safety and regulatory requirements accordingly if it doesn’t match exactly.

You can purchase cables from the HP part store at https://partsurfer.hp.com/Search.aspx.
Internal and External Power Supplies are available for purchase from the following EU distributor: EET https://www.eetgroup.com/en-eu/

NOTE: HP continually improves and changes product parts. For complete and current information about supported parts for your product, go to https://partsurfer.hp.com/Search.aspx, select your country or region, and then follow the on-screen instructions.

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 on page 13.

Remove the Rear Cover:

1. Remove four screw from the rear case.
2. Use your fingers to split the left and right sides apart between the middle frame and rear case.
3. Insert the scraper bar tool into the gap between the middle frame and rear case, and then rotate. The hook opens. Repeat the steps.
4. Lift the rear cover and remove the key board wire and speaker wire from the interface-board.
5. Disassemble the Key board and LED board from the Rear Cover (if required).
6. Remove 2 screws from the bracket.
7. Disassemble 9 screws from the board.
8. Disassemble all the boards from housing
9. Disassemble the USB board from the Rear Cover (if required).

Power board

The power board part number is PLPCKL482UQB2. Before removing the power board, follow these steps:
Prepare the monitor for disassembly. See Preparation for disassembly on page 13.

Remove the power board:

1. The HP M34D power board connector position is as follows:
2. Locate the part number location on the board.

Connector repair

This procedure includes HDMI, DisplayPort, USB Type-C, USB B TYPE, Audio and USB3.0 connectors. The connectors are on the main board (board part number CBPCPD9H1Q1)
The connector’s identifiers are as follows:

USB 3.0

| CN1004

CN1005

Audio| CN605

Before repairing connectors, follow these steps:
Prepare the monitor for disassembly. See Preparation for disassembly on page 13.

IMPORTANT:

• Repair Condition: Connector repair is only for out of warranty.

• Repairing must operate by professional repairers (Note) in repair center, not applicable for end user.

• Electrostatic protection is required when component replacement is required.

• The monitor meets ROHS, please use Lead-free solder wire for soldering.

• If Connector need to replace, must check specification and part number whether match the BOM and location.

• If connector need to replace, please insert new parts carefully because the near pin may cause short circuit by inappropriate operate.

• DO NOT allow any liquid on the board. Water and moisture may cause short-circuit to the electronic components and lead to malfunctions.

• The fusion point of Lead-Free solder is requested. Repairing with conventional lead wire may cause damage.

• Work quickly to avoid overheating the circuit board as soon as you confirm the steady soldering condition.

• Keep the soldering iron tip clean and well tinned and when replacing parts.

• A close inspection of the circuit board revealed look in good condition.

• After repaired, must connect source to each port to check Main board function is ordinary.
  Note: (The requirement of professional repairers’ regulation by ERP lot5)

  • 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.
  • The professional repairer is covered by insurance covering liabilities resulting from its activity, regardless of whether this is required by the Member State.

Audio connector CN605

Repair the audio connector:

1. Use a hot air gun to melt the solder on the pins. Pin solder with soldering iron and absorber. You can gently push down with the soldering iron once everything is molten to move the CN605 out of the through holes.
2. Lift the CN605 connector from the circuit board.
3. Place the new component on the circuit board. Be sure that it matches the footprint.
4. Solder the new component.

HDMI connector CN501

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. Use a hot air gun to melt the solder on the pins.
3. Lift the CN501 connector from the circuit board.
4. Place the new component on the circuit board. Be sure that it matches the footprint.
5. Solder the new component.

DP connector CN503

Repair the DP connector:

1. Use a soldering iron and a de-soldering pump to remove as much solder as possible from the pin.
2. Use a hot air gun to melt the solder on the pins.
3. Lift the CN503 connector from the circuit board.
4. Place the new component on the circuit board. Be sure that it matches the footprint.
5. Solder the new component.

TYPE-C connector CN5101

Repair the TYPE-C connector:

1. Use a soldering iron and a de-soldering pump to remove as much solder as possible from the pin.
2. Use a hot air gun to melt the solder on the pins.
3. Lift the CN5101 connector from the circuit board.
4. Place the new component on the circuit board. Be sure that it matches the footprint.
5. Solder the new component.

USB B TYPE connector CN1001

Repair the USB B Type connector

1. Use a soldering iron and a de-soldering pump to remove as much solder as possible from the pin.
2. Lift the CN1001 connector from the PCB.
3. Place the new component on the circuit board. Be sure that it matches the circuit board footprint.
4. Solder the new component.

USB3.0 connector CN1004 &CN1005 

Repair the USB 3.0 connector:

1. Use a soldering iron and a de-soldering pump to remove as much solder as possible from the pin.
2. Lift the CN1004, CN1005 connector from the PCB.
3. Place the new component on the circuit board. Be sure that it matches the circuit board footprint.
4. Solder the new component.

Function test

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

Table 4-1: Function test

Table 4-1: Function test

Test item| Operating description| Tool used
HDMI test| Confirm whether image displays and sound plays correctly on the monitor.| Computer or DVD player
DP test| Confirm whether image displays and sound plays correctly on the monitor.| Computer or DVD player
USB-C test| Confirm whether image displays and sound plays correctly on the monitor| Computer or USB-C player
Audio test| Change volume and balance to confirm whether volume is smooth and loud enough.| Speaker

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 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 Auto-Sleep Mode.| Press any key on the keyboard or move the mouse to inactivate the

screen blanking utility.

 | Video card is incompatible.| Open the OSD menu and

select the Input menu. Set AutoSwitch 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 connecting 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 then set

auto-sleep to On.

On-Screen Menus are Locked 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 is Locked is Displayed| The monitor’s power button is locked. Function is enabled.| Press and hold the Power button for 10 seconds to unlock the power button

function.

References

• support.hp.com
• hp.com/support
• HP PartSurfer
• Farnell UK - Electronic Components Distributor
• Capacitors | Industrial Tantalum & Ceramic | RS
• DigiKey - Electronic Components Distributor
• EET International

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