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Product Announcement: 

This product is certificated to meet RoHS 

Directive and Lead-Free produced definition. 

Using approved critical components only is 

recommended when the situation to replace 

defective parts. Vender assumes no liability 

express or implied, arising out of any unauthorized 

modification of design or replacing non-RoHS 

parts. Service providers assume all liability.    

Qualified Repairability:

Proper service and repair is important to the safe, 

reliable operation of all series products. The 

service providers recommended by vender should 

be aware of notices listed in this service manual in 

order to minimize the risk of personal injury when 

perform service procedures. Furthermore, the 

possible existed improper repairing method may 

damage equipment 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 away from water or 

expose in extremely high humility environment.  

!

 To ensure the continued reliability of this 

product, use only original manufacturer’s 

specified parts.

To ensure following safety repairing behavior, put 

the replaced part on the components side of 

PWBA, not solder side.

To ensure using a proper screwdriver, follow the 

torque and force listed in assembly and 

disassembly procedures to unscrew screws.

!

 Using Lead-Free solder to well mounted the 

parts.

!

 The fusion point of Lead-Free solder requested in 

the degree of 220°C.

  1. Important Safety Notice

Summary of Contents for SE2422H

Page 1: ...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 2: ...2 Exploded view diagram with list of items ...

Page 3: ...3 Wiring Connectivity Diagram Power Board KB1 Interface Board VGA HDMI Function key board 23 8 inch Panel 1920x1080 ...

Page 4: ...nce for unlocking mechanisms Turn over the LCD monitor to let the screen faced down and then remove the rear cover Use a Philips head screwdriver to remove 6pcs screws for unlocking mechanisms No 1 4 screw size M4x11 Torque 11 1kgfxcm No 5 6 screw size M4x6 Torque 11 1kgfxcm 3 1 2 2 2 3 4 1 5 6 Disconnect the function key cable away from the connector of the board then tear off 3pcs adhesive tape ...

Page 5: ... the cables from the hooks No 1 screw size M4x8 Torque 6 0 5kgfxcm No 2 4 screw size M3x7 5 Torque 6 0 5kgfxcm Remove the Mylar from the hooks of the bracket chassis module Remove the interface board and power board from the bracket chassis module carefully and disconnect all the cables Unplug the LVDS cable from the connector of the panel module by pushing the earing locks Release the panel modul...

Page 6: ...t 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 screwdriver to tighten 4pcs screws for locking the power board and interface board No 1 screw size M4x8 Torque 5 0 5kgfxcm No 2 4 screw size M3x7 5 Torque 5 0 5kgfxcm S3 3 2 4 1 The following two steps S6 and S7 is processed in LCM assemble line Tak...

Page 7: ...he cable on the bracket as the picture below shown Take out 1pcs panel assembled module with front bezel and function key board from the carton and then examine the panel surface according to inspection criteria Turn over the panel and then place screen faced down for later assembling S8 Move the bracket close to the panel then connect LVDS cable to the connector of the panel Turn over the bracket...

Page 8: ... and push the rear cover on the positions marked as the picture below shown for mechanisms engagement S15 S14 L front bezel with panel module then provide power supply and a video signal to the monitor then turn on the monitor for functionality check ift up the monitor to checking the gap between the S17 Stick 2pcs labels on the specific positions as the picture below shown Take 1pcs stand riser a...

Page 9: ... no input signal depending on the connectivity one of the following dialog appears While in self test mode the power LED remains white The display will go into Standby mode in 4 minutes www dell com SE2422H www dell com SE2422HX Dell 24 Monitor SE2422H SE2422HX No HDMI Cable or The display will go into Standby mode in 4 minutes www dell com SE2422H www dell com SE2422HX Dell 24 Monitor SE2422H SE2...

Page 10: ...enu appears on the screen 3 Select the built in diagnostics option A gray screen appears 4 Carefully inspect the screen for abnormalities 5 Press Button 1 on the front panel again The color of the screen changes to red 6 Inspect the display for any abnormalities 7 Repeat steps 5 to 6 to inspect the display when it changes to green blue black white and text screens The test is complete when the tex...

Page 11: ...D on No picture or no brightness Increase brightness and contrast controls through 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 Perform Auto adjust via OSD Adjust the Phase and Pixel Clock con...

Page 12: ...controls through OSD Geometric Distortion Screen not centered correctly Reset the monitor to factory settings Auto adjust via OSD Adjust horizontal vertical controls via OSD Horizontal Vertical Lines Screen has one or more lines Reset the monitor to factory settings Perform Auto adjust via OSD Adjust Phase and Pixel Clock controls via OSD Perform monitor self test feature check and determine if th...

Page 13: ...t Ensure that the video cable connecting the monitor to the computer is connected properly and is secure Check for bent or broken pins in the video cable connector Wrong color Picture color not good Try different Preset Modes in Color settings OSD Adjust R G B value in Custom Color in Color settings OSD Adjust R G B value under Custom Color in Color menu OSD Change the Input Color Format to RGB or...

Page 14: ...nitor power cable plug it back and then turn on the monitor No Input Signal when user controls are pressed No picture the LED light is white Check the signal source Ensure the computer is not in the power saving mode by moving the mouse or pressing any key on the keyboard Check whether the signal cable is plugged in properly Connect the signal cable again if necessary Reset the computer or video p...

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