HP E24i G4 Manual

Getting started

Read this chapter to learn about safety information and where to find additional HP resources.

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.

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:
61.0 cm (24.0 in) diagonal viewable screen area with 1920 × 1200 resolution

• In-plane switching (IPS) panel
• Non glare 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
• 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
• DisplayPort™ video input (cable included)
• High-Definition Multimedia Interface™ (HDMI) video input (cable included)
• VGA video input (cable included in select regions)
• USB hub with one USB Type-B port (cable included) that connects to the computer (upstream) and four USB ports that connect to USB devices (downstream)
• Four on-screen display (OSD) buttons, three that you can reconfigure to quickly allow selection of the most commonly used operations
• Plug and Play capability if supported by your operating system
• VESA® mounting bracket for attaching the monitor head to a wall-mount device or swing arm
• Security cable slot on the rear of the monitor for an optional security cable
• Cable management feature for placement of cables and cords
• On-screen adjustments in several languages for easy setup and screen optimization
• 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 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.
Press the power button on the bottom of the monitor to turn it on.

Rear components

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

Table 1-1: Rear components and their descriptions

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 about the monitor.

For worldwide models (except India):
Barcode label and spec label

For India: (N/A)

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 adaptor 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)
• DK: https://www.digikey.com/

Capacitors by distributor

Connectors by manufacturer

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.
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.
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.

Remove the Rear cover:

Step	Figure	Description
Remove the HINGE ASS'Y		Remove the hinge assy by press the hook on the rear cover.
Remove the rear cover		Remove the rear cover screws by the screwdriver.
		Remove the rear cover from the top side
		disconnect the connectors
		Disconnect the connecters
Remove the mylar		Tear out all tapes and disconnect the connectors by hand
Remove the power board		Remove the screws by the screwdriver
Remove the main board		Remove the screws by the screwdriver
		Remove the hex screws by the hex screwdriver
Remove the USB board		Remove the screws by the screwdriver
Remove the middle frame		Remove the screws by the screwdriver
PANEL

Power board

The power board part number is PLPCJE461GQA6.
Before removing the power board, follow these steps:

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

Remove the power board:

1. The HP E24i G4 power board connector position is as follows:
   

Locate the part number location on the board.

Connector repair

This procedure includes HDMI, Display Port, USB and VGA connectors.
The connectors are on the main board (board part numberCBPCNA6H0FD).

The connectors identifiers are as follows:

Before repairing connectors, follow these steps:

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

• 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)

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.

USB 3.0 TYPE B CN7732

Repair the usb 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 CN7732 out of the through holes.
   
2. Lift the CN7732 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 3.0 TYPE A CN103

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 CN103 out of the through holes.
   
2. Lift the CN103 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.

VGA CN503

Repair the VGA connector:

3. 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 CN503 out of the through holes.
   
4. Lift the CN503 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 CN502

Repair the HDMI connector:

1. Use a soldering iron and a desoldering 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 CN502 connector from the PCB.
4. Place the new component on the PCB. Be sure that it matches the PCB footprint.
   Solder the new component.

DP connector CN501

Repair the DP connector:

1. Use a soldering iron and a desoldering 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 PCB.
4. Place the new component on the PCB. Be sure that it matches the PCB footprint.
5. Solder the new component.

Function test

Table 4-1: Function test

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