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HP V28 4K Maintenance And Service Manual

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Maintenance and Service Guide
HP V28 4K model
SUMMARY
This guide provides information about spare parts, removal and replacement of parts, diagnostic tests, problem
troubleshooting, and more.

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  Summary of Contents for HP V28 4K

  • Page 1 Maintenance and Service Guide HP V28 4K model SUMMARY This guide provides information about spare parts, removal and replacement of parts, diagnostic tests, problem troubleshooting, and more.
  • Page 2 AMD is a trademark of Advanced Micro Devices, Inc. Bluetooth is read “Important Safety Information”. 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.
  • Page 3: Table Of Contents

    Table of Contents 1 Getting started .............................. 1 Important safety information ........................1 Important service information and precautions ..................1 RoHS (2002/95/EC) requirements ......................2 General descriptions ..........................2 Firmware updates ........................... 2 Before returning the repaired product to the customer ................2 2 Monitor features ............................
  • Page 4: Getting Started

    Getting started Read this chapter to learn about safety information and where to find additional HP resources. Important safety information A power cord is included with the monitor. If you use another cord, use only a power source and connection appropriate for this monitor.
  • Page 5: Rohs (2002/95/Ec) Requirements

    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.
  • Page 6: Monitor Features

    ● 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 with select products) Two High-Definition Multimedia Interface™...
  • Page 7: Front Components

    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 Component Function Menu button Press to open the OSD menu, select a menu item from the OSD, or close the OSD menu.
  • Page 8: Rear Components

    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 Component Function Power connector Connects the power cord. VESA release button Releases the stand from the monitor. HDMI ports (2) Connect the HDMI cable to a source device such as a computer or game console.
  • Page 9: Locating The Serial Number And Product Number

    Locating the serial number and product number The serial number and product number are located on a label on the rear of the monitor panel. You may need these numbers when contacting HP about the monitor model. For worldwide models (except India):...
  • Page 10: Illustrated Parts Catalog

    Illustrated parts catalog To identify the monitor major components, use this illustration and table. Item Description BASE_ASS’Y NA NA stand ass'y NA NA BEZEL L28W-Dhp3-s3 INSULATING SHEET 150*135.2*0.43 KEY_FUNCTION KEY BOARD LENS MAINFRAME ADAPTER BOARD NA CONVERSION 715GA936* REAR_COVER L28W-Dhp3-s3 LCD M280DGJ-L30 C5 NB INX SCREW D3 6(MAIN BOARD/POWER BOARD/MAINFRAME)
  • Page 11: How To Order Parts

    How to order parts The HP authorized repair center can purchase the power board from HP. Capacitors and connectors are available for purchase from the following EU distributors: ● Farnell: Farnell UK - Electronic Components Distributor ● Capacitors | RS Components (rs-online.com) ●...
  • Page 12: Removal And Replacement Procedures

    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”...
  • Page 13 Before removing the RC, follow these steps: ▲ Prepare the monitor for disassembly. See Preparation for disassembly on page 9. Step Figure Description Lay the monitor on a Preparation flat, soft and clean surface. Push the 2. Remove button the the Stand- remove the base Ass’y...
  • Page 14 4. Remove Remove the the pin and pin and the the screw screw. 5. Remove Remove the the tapes, tapes, the screws and screws and the the pins pins...
  • Page 15 6. Remove Remove the the screws screws. 7. Remove Remove the the screws screws 8. Remove Remove the the Mylar Mylar...
  • Page 16 Remove the 9. Remove screws to the main remove the Main Board Power Board board and main board power board and power board 10. Remove Remove the connect pins connectors Main BOARD Remove the 11. Remove screws and the the screws. key board.
  • Page 17 Remove the 12. Remove screws and the screws. the camera. 13. The The mainframe mainframe 14. The panel The panel...
  • Page 18: Power Board

    Before removing the power board, follow these steps: ▲ Prepare the monitor for disassembly. See Preparation for disassembly on page 9. Remove the power board: 1) The HP V28 4K power board connector position is as follows: Warning: After unplugging the power supply, the capacitance is still charged, do not touch and discharge the capacitor.
  • Page 19: Connector Repair

    2) Locate the part number location on the board. Power Board Connector repair This procedure includes HDMI, DisplayPort and Audio connectors. The connectors are on the main board (board part number CBPRND9H0Q1). The connectors identifiers are as follows: Connector Location HDMI 1 &2 CN501/CN510 DisplayPort...
  • Page 20: Hdmi1 Connector Cn501

    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. •...
  • Page 21: Hdmi 2 Connector Cn510

    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. HDMI 2 connector CN510 Repair the HDMI connector: 1) Use a soldering iron and a desoldering pump to remove as much solder as possible from the pin.
  • Page 22: Dp Connector Cn5301

    DP connector CN5301 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 CN5301 connector from the PCB. 4) Place the new component on the PCB.
  • Page 23: Function Test

    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 Operating description Tool used Tool used Function test st item HDMI test Confirm whether image displays and sound plays Computer or DVD After repair, be sure to confirm that all functions are working.
  • Page 24 displayed. enabled. sec to disable the OSD Lockout function. “Power Button The monitor's Power Button Lockout feature Press and hold the Power button for 10 Lockout” is displayed. is enabled. sec to unlock the power button function. FreeSync is enabled Variable refresh rate (VRR) m ght be Enable VRR in your graphics card in monitor OSD, but...
  • Page 25: Index

    Index components rear components, 5 rear, 5 removal connector repair, 16 power board, 15 features, 3 RC, 10 firmware updates, 2 removal and replacement procedures, 9 function test, 20 returning to customer, 2 how to order parts, 8 RoHS (2002/95/EC) requirements, 2 illustrated parts catalog, 7 safety information, 1 parts, 7...