Dell P2722HE Service Manual Download Page 1 | Manualshive

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Version: 01

Date: 2021/10/30

Service Manual - P2722HE

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Summary of Contents for P2722HE

Page 1: ...Version 01 Date 2021 10 30 Service Manual P2722HE ...

Page 2: ...ipment or products It is recommended that service engineers should have repairing knowledge experience as well as appropriate product training per new model before performing the service procedures NOTICE To avoid electrical shocks the products should be connected to an authorized power cord and turn off the master power switch each time before removing the AC power cord To prevent the product awa...

Page 3: ...ry dropdown 4 Select the appropriate service or support link based on your need 5 Choose the method of contacting Dell that is convenient for you Item Description Q ty Remark 1 1 For EMEA Only not for other regions 2 Panel Mylar 1 1 3 4 1 1 5 6 USB BD 1 1 7 8 1 9 10 11 1 1 Key BD 12 1 13 1 14 LED BD Front trim ASSY Middle Frame Interface BD Power BD 1 1 15 1 1 Main bracket 16 Joystick button See N...

Page 4: ...3 Wiring Connectivity Diagram ...

Page 5: ...4 How to connect and disconnect power cable connectivity cable WARNING To change power cable connectivity cable switch off power before unplugging the cable and replugging in required cable ...

Page 6: ...4 How to connect and disconnect power cable connectivity cable ...

Page 7: ...cking mechanisms of rear cover Use a Philips head screwdriver to remove four screws for unlocking mechanisms No 1 4 screw size M4x10 Torque 12 0 5kgfxcm S3 S2 S1 2 3 4 1 1 3 2 2 S1 Remove the monitor stand base 1 Place the monitor on a soft cloth or cushion 2 Press and hold the stand release button 3 Lift the stand up and away from the monitor S4 S7 Use a Philips head screwdriver to remove 2pcs sc...

Page 8: ...from the connector of the panel module Use a 2pcs screws for unlocking the bracket with panel module Philips head screwdriver to remove No 1 2 screw size M3x4 Torque 5 0 5kgfxcm 1 2 Disconnect the LED cable from the connector of the board then tear off 3pcs aluminum foil Lift up the panel with the bracket for releasing the front bezel away from the panel Use a Philips head screwdriver to remove 15...

Page 9: ...ard and power board from the bracket chassis module carefully and disconnect all the cables Use a Philips head screwdriver to remove 7pcs screws for unlocking the power board and interface board and then release all the cables from the hooks No 1 screw size M4x8 Torque 6 0 5kgfxcm No 2 7 screw size M3x7 5 Torque 6 0 5kgfxcm 2 1 6 5 4 3 7 S16 S17 ...

Page 10: ...below shown Place a bracket chassis base on a protective cushion then paste 2pcs silicon sheet on the position as the picture below shown S2 S1 Take a interface board connect a LVDS cable to the connector of the interface board then connect the cable of the power board to the connector of the interface board Turn over the interface board and locate it into the bracket Use a Philips head screwdrive...

Page 11: ...n paste 2pcs aluminum foil to fix the bracket then paste 1pcs aluminum foil to cover the LVDS connector of the panel S13 Assemble the middle bezel with the front bezel and panel module then adjust the middle bezel for two parts firmly attachment S11 Take a front bezel then lift up the panel unit and assemble the front bezel with the panel Use a Philips head screwdriver to tighten 13pcs screws for ...

Page 12: ...conductive foam on the back of the board Locate the USB board into the hook of the middle bezel Use a Philips head screwdriver to tighten one screw for locking the USB unit with middle bezel No 1 screw size M3x6 Torque 4 0 5kgfxcm S14 S17 2 3 4 1 Take 1pcs assembled stand base then fit the two tabs on the upper part of the stand into the grooves on the back of the monitor and then press the stand ...

Page 13: ...5 Disassembly and Assembly Procedures L video signal to the monitor ift up the monitor then provide power supply and a then turn on the monitor for functionality check S19 ...

Page 14: ... If the monitor cannot sense a video signal and is working correctly the following message will appear or NOTE The message may be slightly different according to the connected input signal NOTE While in self test mode the power LED remains white 4 This box also appears during normal system operation if the video cable becomes disconnected or damaged 5 Turn Off your monitor and reconnect the video ...

Page 15: ...lean no dust particles on the surface of the screen 2 Move and hold the joystick up down left right for about 4 seconds until a pop up menu appears 3 Move the joystick to highlight the Diagnostic icon and then press the joystick to confirm A gray test pattern appears 4 Carefully inspect the screen for abnormalities 5 Press the joystick to change the test patterns 6 Repeat steps 4 and 5 to inspect ...

Page 16: ...se brightness contrast controls via OSD Perform monitor self test feature check Check for bent or broken pins in the video cable connector Run the built in diagnostics Ensure that the correct input source is selected in the Input Source menu Poor Focus Picture is fuzzy blurry or ghosting Eliminate video extension cables Reset the monitor to factory settings Change the video resolution to the corre...

Page 17: ...etermine if these lines are also in self test mode Check for bent or broken pins in the video cable connector Run the built in diagnostics Synchronization Problems Screen is scrambled or appears torn Reset the monitor to factory settings Perform monitor self test feature check to determine if the scrambled screen appears in self test mode Check for bent or broken pins in the video cable connector ...

Page 18: ...es in Color setting OSD Adjust R G B value in Custom Color in Color settings OSD Change the Input Color Format to RGB or YCbCr YPbPr in the Color settings OSD Run the built in diagnostics Image retention from a static image left on the monitor for a long period of time Faint shadow from the static image displayed appears on the screen Set the screen to turn off after a few minutes of screen idle t...

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