Dell D2421DS Manual de usuario

Service

Service

Service

CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING

24" LCD Color Monitor Dell D2421DS

SAFETY NOTICE

ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE

CHASSIS AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING

ELECTRONIC EQUIPMENT CONTAINING HIGH VOLTAGES.

5

5

DELLD2421DS

1

Mechanical Instruction

1 Disassembly Procedures:

Turn off power

Unplug external cables from product

Remove stand from product: use a

screwdriver to remove six screws

out

(No.1~4 screw size=M4x12; Torque=7.5~8.5kgfxcm

No.5~6 screw size=M3x6; Torque=5~6kgfxcm.)

Wedge plastic picks between the rear cover

and the middle bezel on the corners of the

bottom side of the monitor to release the

rear cover, then pull up carefully the rear

cover in order of arrow preference for

unlocking mechanisms of rear cover.

Put it on a protective cushion and

remove the rear cover.

S1

S2

S3

S4

S5

6

DELLD2421DS

2

Tear off 4 pieces of aluminum foil (pic.7.1)

then disconnect the keypad cable from the

connectors of the main board(pic.7.2). Tearoff

2 pieces tape, disconnect the backlight cable

from the connectors of the power board and

panel module(pic.7.3).

Pic.7.1

Pic.7.2

Lift up the bracket chassis module and put it

on a protector cushion. Please payattention

to ESD protection(wear ESD ring and so on).

Turn over the bracket chassis. Use a screwdriver

to remove 8 screws(bottom side*4,inside*4)

(Pic.9.1&2), Tear off the black tape(Pic.9.3)

(No.1~8 screw size=M3x6; Torque=4.5~6.5 kgfxcm

Pic.9.1

Pic.7.3

Disconnect the LVDS cable from the connectors of

the main board andpanel module Pic.9.2

Pic.9.3

S6

S8

S9

S7

7

DELLD2421DS

3

Take off the mylar

Use a screwdriver to remove last 2 screws for

unlocking the power board, then remove the

board from the hooks of the bracket chassis.

(No.1~2 screw size=M3x6, Torque=4.5~6.5kgfxcm

Use a Philips‐head screwdriver to remove 9 screws

for unlocking the bezel, then remove bezel

S10

S11

S12

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