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Maintenance and Service Guide

25mx model

SUMMARY

This guide provides information about spare parts, removal and replacement of parts, diagnostic tests, problem
troubleshooting, and more.

Summary of Contents for 25mx

Page 1: ...Maintenance and Service Guide 25mx model SUMMARY This guide provides information about spare parts removal and replacement of parts diagnostic tests problem troubleshooting and more ...

Page 2: ...d 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 Fir...

Page 3: ...r and product number 7 Illustrated parts catalog 8 How to order parts 9 Removal and replacement procedures 10 Preparation for disassembly 10 Power board replacement 14 Power board Capacitor repair C707 and C708 15 Main board Connector repair Audio HDMI and DisplayPort 18 Audio Connector repair M1 19 HDMI Connector repair J2 20 DP Connector repair J3 21 Stick Gasket on the Shielding 22 Function Tes...

Page 4: ...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...

Page 5: ...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 Before return t...

Page 6: ... capabilities Removable stand for flexible display head mounting solutions DP DisplayPort video input HDMI High Definition Multimedia Interface video input Audio headphone variable line out jack 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 s...

Page 7: ...u item from the OSD or close the OSD menu 2 4 Function buttons Use these buttons to navigate through the OSD menu based on the indicators next to the buttons that are activated while the OSD menu is open You can reconfigure the function buttons in the OSD menu to quickly select the most commonly used operations 5 Power button Turns the monitor on or off 6 Power light Blue The monitor is on Orange ...

Page 8: ...he power cable to monitor 2 Audio out headphone jack Connects headphone to the monitor To reduce the risk of personal injury adjust the volume before using headphones earbuds or a headset For additional safety information refer to the Product Notice provided in your documentation kit 3 HDMI connector Connects the HDMI cable to the monitor 4 DisplayPort connector Connects the DP cable to the monito...

Page 9: ...oduct number The serial number and product number are located on a label on the back of display You may need these numbers when contacting HP about the monitor model Note You may need to partially pivot the display head to read the label ...

Page 10: ...llustration and table Table 2 1 Monitor major components and their descriptions Item Description Qty 1 ASSY MIDDLE FRAME 1 2 ASSY RC 1 3 ASSY SHD 1 4 ASSY COLUMN 1 5 PCBA IF BD MI 1 6 PCBA SPS BD MI 1 7 PCBA CTRL BD 7 8 PCBA LENS BD 1 9 ASSY BASE 1 10 PANEL 1 5 9 8 7 6 4 3 2 1 10 ...

Page 11: ...5 10K C707 C708 Farnell 16ZLH680MEFC10X12 5 Capacitor 680 µF 10 12 5 6K 16ZLS680MEFC10X12 5 Capacitor 680 µF 10 12 5 10K RS 16ZLH680MEFC10X12 5 Connectors by Distributor Component Description Location Identifier Component Distributor Part number of Manufacturer Distributor DisplayPort DP J3 Farnell RS Molex SD 47272 0024 HDMI J2 Farnell RS Molex 2086581001 Audio M1 Farnell STX 3120 5B Gasket by Di...

Page 12: ...rly prepare to disassemble and reassemble the monitor 1 Clean the room for disassembly 2 Identify the disassembly area 3 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 4 Be sure to have the following equipment and materials Press fixture Working table Screwdriver Knife Gloves Cleaning cl...

Page 13: ... 1 1 Unlock 4 pcs screws Screw driver 11 1 0Kgf 2 1 Unlock 1 pcs RC screws Screw driver 5 0 1 0Kgf Disassemble the RC from the monitor notice the disassembly order 1 Disassemble the Bottom part 2 Disassemble the Right part 3 Remove RC from middle frame 1 2 3 4 ...

Page 14: ...cable from IF BD and panel 2 Remove the 1 pcs AL tapes and 3 tapes 3 Remove the lamp wire and FFC cable 4 Remove the SHD 4 1 Disassemble the CTR cable and CTR BD from middle frame 2 Disassemble the LENS cable and LENS BD from middle frame ...

Page 15: ...ylar from the panel Screw driver 6 5 7 5Kgf 6 1 Disassemble the CTR BD and remove CTR cable 2 Disassemble the LENS BD and remove LENS cable 7 1 Unlock the 7 pcs screws Screw driver 7 1Kgf 8 1 Disassemble Power BD and IF BD 2 Disassemble the SPS wire 3 Disassemble FFC cable ...

Page 16: ...on the red frame as follow image IMPORTANT Repairing must operate by professional repairers in HP repair center not applicable for end user The primary side is the high voltage area please take care when repair Front and Back view After repaired must check PSU function is ordinary Power Board PN Power Board Primary side Primary side ...

Page 17: ...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 par...

Page 18: ...y lose function and cause product no work The C707 and C708 locations are identified below 1 You must disconnect the power cord from the power source before opening the monitor to prevent component damage 2 Use Multimeter measure whether EL capacitors still have charge Before repairing must discharging it C605 C703 C707 C708 in following picture need to discharging C708 C707 Power Board C707 C708 ...

Page 19: ...e PCB 4 Place new component on the location and must check polarity match PCB print 5 After repaired please double check whether polarity match PCB print solder empty and unnecessary solder after soldering must remove Power Board ...

Page 20: ...2 DisplayPort J3 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 If Connector need to replace must check specification and part num...

Page 21: ...nical 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 insura...

Page 22: ... possible from one of the pin 2 Use a hot air gun to melt the solder on the pins 3 Lift J2 from the PCB 4 Place new component on the location and must check it can match PCB footprint 5 Soldering the new component by solder iron 6 Please must stick a gasket on the Shielding Find the procedure on page 22 ...

Page 23: ...elt the solder on the pins 3 Lift J3 from the PCB 4 Place new component on the location and must check it can match PCB footprint 5 Soldering the new component by solder iron 6 Tear off the yellow tape on the DP connector so that it can contact to the gasket EMI will be effective 7 Please must stick a gasket on the Shielding Find the procedure on page 22 ...

Page 24: ...sket and align the gasket to the right side of the HDMI or DP Alignment refers to the yellow arrow in the image below 3 Press the gasket to the end of shielding with your fingers and confirm that it will not fall If the gasket falls on the inner boards it will cause a short circuit and damage the Monitor 4 After assembly check from the appearance whether the connector is indeed fixed with the gask...

Page 25: ...DMI test Check if the image and sound can be played normally on monitor No noise volume and balance is correct PC or DVD Player DP test Check if the image and sound can be played normally on monitor No noise volume and balance is correct PC or DVD Player Audio test Change sound volume and balance if the volume sound smoothly and loud enough Speaker ...

Page 26: ...24 Support and Troubleshooting ...

Page 27: ... power board removal 12 power button location 3 power connector location 4 power light location 3 preparation for disassembly 9 RC removal 9 rear components 4 removal power board 12 RC 9 xxxx 14 removal and replacement procedures 9 RoHS 2002 95 EC requirements 1 safety information 1 serial number location 5 spare parts 7 USB port location 4 USB upstream port location 4 VGA connector location 4 xxx...

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