Dell U3821DWb Simplified Service Manual Download

Page: 7 / 14

Pull out “CTRL BD
FFC” from I/F BD
to take off Rear
Cover

1. Unplug “Backlight

Wire” from LED
Driver BD (See
Red mark)

2. Unplug “Speaker

Wire” from I/F BD
(See Pink remark)

3. Tear off 7 tapes

from “Speaker
Wire” (See Green
Mark)

1. Tear off an

acetate tape from
“USB BD Wire”

2. Unplug “USB BD

FFC” and “USB
BD Wire” from I/F
BD

Summary of Contents for U3821DWb

Page 1: ... 1 Simplified Service Manual U3821DWB Version 01 Date 2020 11 25 ...

Page 2: ... 2 Content Index 1 General Safety Instructions 3 1 1 SAFETY General Safety 3 1 2 SAFETY General Power Safety 5 2 Disassembly SOP 6 3 Assembly SOP 10 ...

Page 7: ...Cover 4 1 Unplug Backlight Wire from LED Driver BD See Red mark 2 Unplug Speaker Wire from I F BD See Pink remark 3 Tear off 7 tapes from Speaker Wire See Green Mark 5 1 Tear off an acetate tape from USB BD Wire 2 Unplug USB BD FFC and USB BD Wire from I F BD ...

Page 8: ...ug FFC EDP from panel 5 Take off Main SHD from Panel Screw driver Torsion of Main SHD screw 4 0 5Kg 7 1 Disassemble Mylar from Main SHD 2 Unlock 10 PCBA screws to disassemble I F BD SPS BD and LED Driver BD from Main SHD Screw driver Torsion of PCB screw 9 1Kg Do not touch the component without wearing insulating gloves when disassembling and assembling Power BD ...

Page 9: ... 9 8 1 Tear off 1 tape from I F BD 2 Unplug wires from I F BD SPS BD and LED Driver BD ...

Page 10: ... 2 Screw driver 3 Glove 4 Cleaning cloth 5 ESD protection 6 U3818DW Curve Sponge Jig Item Picture Operation Tools Notes 1 1 Insert SPS BD wire into SPS BD 2 Insert FFC EDP cable into I F BD and paste 1 tape to fix it Screw driver Torsion of PCB screw 9 1Kg Do not touch the component without wearing insulating gloves when disassembli ng and assembling Power BD SPS BD I F BD ...

Page 11: ... Driver BD wire into LED Driver BD 4 Assemble LED Driver BD into Main SHD 5 Lock 10 screws to fix I F BD SPS BD and LED Driver BD on Main SHD 6 Assemble Mylar on Main SHD to cover SPS BD Screw driver Torsion of screw 8 5 1Kg Kg SPS BD wire WIRE 24P 24P FFC EDP FFC EDP 30P 30 SPS BD to LED Driver BD wire ...

Page 13: ... I F BD See Pink mark 2 Adhere 7 tapes to fix Speaker Wire on Main SHD and Panel See Green Mark 7 1 Insert CTRL FFC into I F BD 8 1 Assemble Rear Cover with Middle Frame 2 Fix Rear Cover by screw 4 Screw driver Torsion of screw 11 1Kg ...

Page 14: ...nd turn the screw clockwise 3 After fully tightening the screw fold the screw handle flat within the recess 10 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 ...