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Maintenance and Service Guide
27f 4k model
L52867
SUMMARY
This guide provides information about spare parts, removal and replacement of parts, diagnostic tests, problem
troubleshooting, and more.

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Table of Contents
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Summary of Contents for HP 27f 4k

  • Page 1 Maintenance and Service Guide 27f 4k model L52867 SUMMARY This guide provides information about spare parts, removal and replacement of parts, diagnostic tests, problem troubleshooting, and more.
  • Page 2 Devices, Inc. Bluetooth is a trademark owned sure to read “Important Safety Information”. 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 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.
  • 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

    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.
  • Page 7: Rear Components

    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 Component Function Connect HDMI cables to the HDMI connectors on HDMI ports (2) source devices. Connects a DisplayPort cable to the DisplayPort DisplayPort connector connector on the source device.
  • Page 8: 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 (except India):...
  • Page 9: Illustrated Parts Catalog

    Illustrated parts catalog To identify the monitor major components, use this illustration and table. Item Description DISPLAY BD ASS'Y HP Encore II 27f 4k MAIN BD ASS'Y HP 27f 4k (LM270WR3-RSAL1) LM270WF7-RSAL1,Encore II HP Black REAR SUPPORT-R(ABS 94-HB/J13417B5)(HP 27f 4k) REAR SUPPORT-L(ABS 94-HB/J13417B5)(HP 27f 4k) SHIELDING (SECC 0.5T)(HP 27f 4k 1DP 2H)
  • Page 10: How To Order Parts

    WH FFC 30P(1.0mm)270mm(3+PRO+3M)10° 60V G/FW/CONN(A15+BC)+AL HF WH KY-1251HS01-06/KY-1021HS-06 #28 630mm W/B HF How to order parts Connectors by manufacturer • Digi-Key Component: Digi-Key Component United Kingdom Component Location Component description Distributer part number distributor identifier HDMI P200/P201 DigiKey WM9890TR-ND WM9890CT-ND WM9890DKR-ND DisplayPort P300...
  • Page 11 DisplayPort &DC power: If use the DisplayPort connector (A118340-ND) or the DC power connector (732- 5935-ND), the PCB layout need to be modify. The pin distance is different compares to original connector, and it cannot fit PCB toaling hole. The DisplayPort will be lower height than RC surface, and the DC power is over the RC hole, need to modify the ID.
  • Page 12 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.
  • Page 13: 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 14 Step 1 Quick release Base stand (1).Pull out base and stand Press the black button a. Press black button with one hand b. Pull out stand & base with another hand (2).Disassy base and stand Twist out the screw Step 2: Strip the screws from rear cover, then move rear cover follow the below way...
  • Page 15 Dismantle the rear cover first from the two marked position Remove the screws with Screwdriver Remove the 8pin FFC from main board then remove rear cover Remove the deco Step 3: To remove the shielding(contain the other material ); (3.1) Remove the acetate tapes covering the LVDS/ LED FFCs; (3.2) Pull out the LVDS/ LED FFCs to separate the base assembly from the unit;...
  • Page 16 Remove the four screws to separate shielding from CB Remove the nine marked screws to remove rear cover supporter Step 4: Strip the screws *4pcs and remove 1PCS Thermal Pad...
  • Page 17: Connector Repair

    Connector repair This procedure includes HDMI and DisplayPort connectors. The connectors are on the main board (board part number R352718820150...
  • Page 18: Hdmi Connector P200/P201

    The connectors identifiers are as follows: Connector Location HDMI P200/P201 DisplayPort P300 Before repairing connectors, follow these steps: ▲ Prepare the monitor for disassembly. See Preparation for disassembly on page 12. HDMI connector P200/P201 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.
  • Page 19: Dp Connector P300

    3) Lift the P200 or 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. DP connector P300 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.
  • Page 20: Support And Troubleshooting

    HDMI test Confirm whether image displays and sound plays Computer or DVD player correctly on the monitor. DP test Confirm whether image displays and sound plays Computer or DVD player correctly on the monitor. Support and troubleshooting The following table lists possible problems, the possible cause or each problem, and the recommended solutions.
  • Page 21 off, but it did not select Power Control > Auto-Sleep Mode and set seem to enter auto-sleep to On. into Sleep mode. On-Screen Menus Press and hold the Menu The monitor’s OSD lock function is enabled. are Locked is button on the front bezel to displayed.
  • Page 22: Index

    Index components precautions, 1 front, 5 preparation for disassembly, 12 rear, 6 RC removal, 12 connector repair, 17 rear components, 6 DisplayPort connector location, 6 removal features, 4 power board, 15 firmware updates, 2 RC, 12 front components, 5 Function test, 18 removal and replacement procedures, 12 function button locations, 5 function test, 20...

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L52867

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