Page 1
Maintenance and Service Guide X27c model 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 sure to read “Important Safety Information”. 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.
Table of Contents 1 Getting started ............................... 2 Important safety information ........................2 Important service information and precautions ..................2 RoHS (2002/95/EC) requirements ......................3 General descriptions ..........................3 Firmware updates ........................... 3 Before returning the repaired product to the customer ................3 2 Monitor features ............................
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.
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.
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 Component Function If the OSD menu is open, press to confirm Menu/OK selection. If the OSD menu is closed, press to open the OSD menu.
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 HDMI port Connects an HDMI cable from the monitor to a source device such as a computer.
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. For worldwide models (except India):...
Illustrated parts catalog To identify the monitor major components, use this illustration and table. Item Description DECO_BEZEL L27WR-Dblc1hp-p12 LENS_POWER PANEL MIDDLE_FRAME L27WR-Dblc1hp-p12 INSULATING SHEET 34.1*17 POWER BOARD MAIN BOARD MAINFRAME KEY BOARD LED BOARD REAR_COVER stand ass'y NA NA BASE_ASS’Y NA NA 0M1G3030 4120 0D1G1030 6120...
0D1G1030 6120 0M1G3030 4120 0Q1G 930 5120 0M1G2940 10 47 CR3 How to order parts The HP authorized repair center can purchase the power board from HP. Power board Description HP spare part number Manufacturer part number PSU X27c 1st source...
Page 12
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”...
Page 14
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.
Page 15
6) Disassemble the Key board and LED board from the Rear Cover (if required). 7) Tear off the tapes. 8) Remove 2 screws from the main frame. 9) Remove 2 screws from bracket 10) Disassemble 5 screws from the board. 11) Disassemble all the boards from housing.
Before removing the power board, follow these steps: ▲ Prepare the monitor for disassembly. See Preparation for disassembly on page 11. Remove the power board: 1) The HP X27c 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.
Connector repair This procedure includes HDMI, DisplayPort and Audio connectors. The connectors are on the main board (board part number CBPC1A8HPQ1) The connectors’ identifiers are as follows: Connector Location HDMI CN501 DisplayPort 1 CN551 Audio CN601 MAIN BOARD CN501 CN551 CN601 Before repairing connectors, follow these steps: ▲...
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’...
2) Use a hot air gun to melt the solder on the pins. 3) Lift the CN551 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. Audio Connector CN601 Repair the DP connector: 1) Use a soldering iron and a de-soldering pump to remove as much solder as possible from the pin.
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 Computer or DVD player plays correctly on the monitor.
Page 21
blurred, select Brightness to adjust indistinct, or too the brightness scale as dark. needed. Check Video Monitor video cable is disconnected. Connect the appropriate Cable is video signal cable displayed on between the computer and screen. monitor. Be sure that the computer power is off while you connect the video cable.