Dell P3421WB, Simplified Service Manual

Page 1: ... 1 Service Manual P3421WB Version 01 Date 2021 10 08 ...

Page 2: ...TY General Power Safety 5 2 Exploded view diagram with list of items 6 3 Wiring connectivity diagram 8 4 How to connect and disconnect power cable connectivity cable 9 5 Disassembly and Assembly Procedures 11 5 1 Disassembly SOP 11 5 2 Assembly SOP 15 6 Trouble shooting instructions 18 ...

Page 3: ...or place equipment so close together that it is subject to recalculated or preheated air NOTE Review the weight limits referenced in your computer documentation before placing a monitor or other devices on top of your computer Ensure that nothing rests on your equipment s cables and that the cables are not located where they can be stepped on or tripped over Ensure that all cables are connected to...

Page 4: ...omponents inside your equipment Under certain conditions ESD may build up on your body or an object such as a peripheral and then discharge into another object such as your computer To prevent ESD damage you should discharge static electricity from your body before you interact with any of your equipment s internal electronic components such as a memory module You can protect against ESD by touchi...

Page 5: ...as risk of electric shock and or fire Ensure that the ground prong of the power plug is inserted into the mating ground contact of the power strip Be sure to grasp the plug not the cable when disconnecting equipment from an electric socket If your equipment uses an AC adapter Use only the Dell provided AC adapter approved for use with this device Use of another AC adapter may cause a fire or explo...

Page 6: ... 6 2 Exploded view diagram with list of items 22 23 24 25 26 ...

Page 7: ...ASSY STAND CLMN 1 20 ASSY STAND BASE 1 21 MYLAR PWR BD 1 22 Power cable 1 See NOTE 23 DisplayPort cable 1 See NOTE 24 HDMI cable 1 See NOTE 25 USB Type C cable USB 3 2 Gen1 5 Gbps 1 See NOTE 26 USB 3 2 Gen1 5 Gbps upstream cable 1 See NOTE NOTE For replacement of power cord connectivity cable and external power supply if applicable contact Dell 1 Go to https www dell com support 2 Verify your coun...

Page 8: ... 8 3 Wiring connectivity diagram Wire1 FFC 1 FFC 2 Wire2 Wire3 Wire4 ...

Page 9: ...tivity cable WARNING To change power cable connectivity cable switch off power before unplugging the cable and replugging in required cable Connect disconnecting the DisplayPort cable and Power cable Connecting disconnecting the HDMI cable and Power cable ...

Page 10: ... 10 Connecting disconnecting the USB TYPE C cable and Power cable Connecting disconnecting the USB 3 2 Gen1 5 Gbps cable and Power cable ...

Page 11: ...table 2 Philips head screwdriver 3 Gloves 4 Cleaning cloth 5 ESD protection 6 Bar Scraper 7 U3415W curve sponge jig Item Picture Operation Tool Notes 1 To remove the stand 1 Place the monitor on U3415W curve sponge jig 2 Press and hold the stand release button 3 Lift the stand up and away from the monitor U3415W curve sponge jig Panel and whole monitor head must be put on U3415W curve sponge jig t...

Page 12: ...the monitor Notice the disassembly order Top Side Right Left Side Bottom Side Bar Scraper 4 1 Pull out CTRL BD FFC from I F BD to take off Rear Cover 5 1 Pull out USB FFC cable from I F BD 6 1 Pull out short backlight wire and long backlight wire from LED Driver BD ...

Page 13: ...assemble Main SHD Orange mark Philips head screwdriver Torsion of Main SHD screw 4 5 0 5 kg 8 1 Tear off a tape from EDP cable 2 Pull out EDP cable from Panel 3 Take off Main SHD from panel 9 1 Disassemble Mylar PWR BD from Main SHD ...

Page 14: ...ED DRV BD from Main SHD Philips head screwdriver Torsion of PCB screw 9 1Kg 11 1 Tear off tape from I F BD 2 Remove all cables from I F BD SPS BD and LED Driver BD Do not touch the component without wearing insulating gloves when disassembli ng and assembling SPS BD ...

Page 15: ...icture Operation Tools Notes 1 1 Insert EDP cable to I F BD and stick a tape to fix EDP cable on I F BD 2 Place I F BD into Main SHD 3 Connect SPS BD to I F BD wire to I F BD and SPS BD then place SPS BD into Main SHD 4 Connect SPS BD to LED Driver BD wire to SPS BD and LED Driver BD then place LED Driver BD into Main SHD Do not touch the component without wearing insulating gloves when disassembl...

Page 16: ...anel U3415W curve sponge jig Panel and whole monitor head must be put on U3415W curve sponge jig to avoid panel damage It is not allowed to place the front side of panel and monitor head on a flat surface 5 1 Fix Main SHD with Panel by screw 4 Orange mark 2 Insert short backlight wire and long backlight wire into LED Driver BD Philips head screwdriv er Torsion of Main SHD screw 4 5 0 5 kg ...

Page 17: ... To attach the monitor stand 1 Insert the stand base blocks fully into the stand slot 2 Lift the screw handle and turn the screw clockwise 3 After fully tightening the screw fold the screw handle flat within the recess 9 Attach the stand assembly to the display a Fit the two tabs on the upper part of the stand to the groove on the back of the display b Press the stand down till it snaps into place...

Page 18: ... 18 6 Trouble shooting instructions ...

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