Dell U2421E Teardown Manual

1. Disassembly Procedures:
S1
Open the carton with a proper tool.
Take out all accessories including label(optinal), QSG,
Delta-E paper, DP cable, USB C to C cable(Type-C
S2
cable), USB A to C cable(USB cable), power cable
and other packing materials from the carton. (Note: It
depends on whether users returning the accessories)
Delta_E paper
USB A to C cable
USB C to C cable
DP cable
power cable
Take out the base and molded plup from the carton,
S3
then take out the monitor and stand from the carton.
stand
Take out the monitor from EPE-bag and put the LCD
S4
monitor on a protective cushion.
QSG
base
Monitor
Use a Philips-head screwdriver to remove 4pcs
S5
screws for unlocking mechanisms. Remove DP cap.
(No.1~4 screw size=M4x11; Torque=11
2
4
Wedge your fingers between rear cover and the
middle bezel on the corners of the top side of the
monitor to release the rear cover, then use one hand
S6
to press the middle bezel, the other hand to pull up
carefully the rear cover in order of arrow preference
for unlocking mechanisms of rear cover.
2
Lift the rear cover up carefully. Disconnect the
joystick key cable from the connector of the interface
S7
board, and then remove the rear cover and put it
aside for later diasassembling.
Use a Philips-head screwdriver to remove 2pcs
screw for unlocking the key board, then tear off the
S8
tapes and release the key board.
(No.1~2 screw size=M2x2.4, Torque=0.8~1kgfxcm)
DELL U2421E
1kgfxcm)
±
3
1
1
2
3
2 1
1