hp M27f 27 Inch IPS FHD Anti Glare Monitor User Guide

Maintenance and Service Guide
M27f model
M31376
M27fe model
M73283
M27fw model
M31379
User Guide

M27f 27 Inch IPS FHD Anti Glare Monitor

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.
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: Feb 2022
Document Part Number:
M31376-M27f-MSG-V1

Assembly part number:
M31376-001
M73283-001
M31379-001

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 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.

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:

• 68.6 cm/27 in diagonal viewable screen area with 1920 × 1080 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
• Wide color gamut to provide coverage of sRGB color spaces
• Nonglare screen with an LED backlight
• Wide viewing angle to allow viewing from a sitting or standing position, or when moving from side to side
• Tilt adjustment capability
• High-Definition Multimedia Interface (HDMI) video inputs (cable provided)
• VGA video input (cable provided)
• Plug and Play capability, if supported by your operating system
• Security cable slot provision on rear of monitor for 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 the 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

NOTE: For safety and regulatory information, refer to 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 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

the OSD menu is open, selects an item in the OSD menu.
2| Information / Auto-Adjustment/ Minus Function button 3—assignable| Information: If the OSD menu is closed and HDMI is the primary video source, opens the Information menu.
Auto-Adjustment: If the OSD menu is closed and VGA is the primary video source, activates the auto-adjustment feature to optimize the screen image.
Minus: If the OSD menu is open, navigates backward through the OSD menu and decreases adjustment levels.
3| Input/ Plus
Function button 2—assignable| Input: If the OSD menu is closed, switches to the next video input port (VGA or HDMI).
Pius: If the OSD menu is open, navigates forward through the OSD menu and increases adjustment levels.
4| Viewing Modes / Exit
Function button 1-assignable| Viewing Modes: If the OSD menu is closed, opens the Viewing Modes menu to choose different screen viewing settings.
Exit: If the OSD menu is open, saves changes and exits the OSD menu.
5| Power| Turns the monitor on or off.

NOTE: You can reconfigure the Function buttons in the OSD menu to quickly select the most commonly used operations. Press the Menu button to open the OSD, and then select Menu Control. Select Assign buttons, and then select one of the available options for the button you want to assign.

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

Table 2-2: Rear components and their descriptions

devices.
2| VGA connector| Connects a VGA cable to the DisplayPort connector on the source device.
3| Power connector| Connects an DC adapter.
4| Security cable slot| Connects an optional security cable.

Locating the serial number and product number
Depending on the product, the serial number and product number are located on a label on the rear of the monitor or on a label under the front bezel of the monitor head. You might need these numbers when contacting HP for support.

For worldwide models
Rating label

Illustrated parts catalog

To identify the monitor major components, use this illustration and table.
M27f/M27fe/M27fw

How to order parts

Connectors by manufacturer

• Digi-Key Component: Digi-Key Component United Kingdom

Component description| Location identifier| Component distributor| Distributer part number
---|---|---|---
VGA| P100| RS| 10090929-5154XLF
HDMI| P200/P201| Farnell| 51V019S-33WN-BD
Digikey| 483078012

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 on page
9. Remove the Rear Cover:

1. Lay the display on soft desk and push the button of stand to unlock the stand, then pull out the stand form the monitor head.
2. Twist out the screw and separate base and stand.
3. Strip two screws from the rear cover ，then move rear cover follow the below way
4. Strip four screws from the hinge
5. Remove the acetate tapes from the LVDS/ LED cable.
6. Pull out the LVDS/ LED cable to panel.
7. Strip fourteen screws from the rear cover supporter and M/B.

Connector repair
This procedure includes HDMI and VGA connectors.
This procedure includes VGA, HDMI connectors.
The connectors are on the main board.
The connectors identifiers are as follows:

Before repairing connectors, follow these steps:
▲ Prepare the monitor for disassembly. See Preparation for disassembly on page 9.

VGA P100
Repair the VGA 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 P100 out of the through holes.
2. Lift the P100 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.

HDMI connector P200/P201
Repair the HDMI connector:

1. Use a soldering iron and a disordering pump to remove as much solder as possible from the pin.
2. Use a soldering iron or hot air gun to melt the solder on the pins.
3. Lift the P200/P201 connector from the PCB.
4. Place the new component on the PCB. Be sure that it matches the PCB footprint.
5. Solder the new component.

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

Table 4-1: Function test

or DVD player
VGA test| Confirm whether image displays correctly on the monitor.| Computer or DVD player

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

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.
| 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 Control menu. Set Auto-Switch Input to Off and manually select the input
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 is off, but it did not seem to enter into Sleep mode.| The monitor’s power saving control is disabled.| Open the OSD menu and select Power Control > Auto-Sleep Mode and 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 on the front bezel to 10 seconds to disable the OSD lockout function.
Power Button is Locked 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.

References

• partsurfer.com
• support.hp.com
• hp.com/support
• HP PartSurfer
• EET International

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