Dell S3220DGF Instructions for use

31.5" LCD Monitor Dell S3220DGS
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Service
Service
Service
Simplified

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Important Safety Notice
Proper service and repair is important to the safe, reliable operation of all DELL Company Equipment. The service
procedures recommended by DELL and described in this service manual are effective methods of performing
service operations. Some of these service operations require the use of tools specially designed for the purpose.
The special tools should be used when and as recommended.
It is important to note that this manual contains various CAUTIONS and NOTICES which should be carefully read
in order to minimize the risk of personal injury to service personnel. The possibility exists that improper service
methods may damage the equipment. It is also important to understand that these CAUTIONS and NOTICES ARE
NOT EXHAUSTIVE. DELL could not possibly know, evaluate and advise the service trade of all conceivable ways
in which service might be done or of the possible hazardous consequences of each way. Consequently, DELL has
not undertaken any such broad evaluation. Accordingly, a servicer who uses a service procedure or tool which is
not recommended by DELL must first satisfy himself thoroughly that neither his safety nor the safe operation of the
equipment will be jeopardized by the service method selected.
Hereafter throughout this manual, DELL Company will be referred to as DELL.
WARNING
Use of substitute replacement parts, which do not have the same, specified safety characteristics may create
shock, fire, or other hazards.
Under no circumstances should the original design be modified or altered without written permission from DELL.
DELL assumes no liability, express or implied, arising out of any unauthorized modification of design.
Servicer assumes all liability.
FOR PRODUCTS CONTAINING LASER:
DANGER-Invisible laser radiation when open. AVOID DIRECT EXPOSURE TO BEAM.
CAUTION-Use of controls or adjustments or performance of procedures other than those specified herein may
result in hazardous radiation exposure.
CAUTION -The use of optical instruments with this product will increase eye hazard.
TO ENSURE THE CONTINUED RELIABILITY OF THIS PRODUCT, USE ONLY ORIGINAL MANUFACTURER'S
REPLACEMENT PARTS, WHICH ARE LISTED WITH THEIR PART NUMBERS IN THE PARTS LIST SECTION
OF THIS SERVICE MANUAL.
Take care during handling the LCD module with backlight unit
-Must mount the module using mounting holes arranged in four corners.
-Do not press on the panel, edge of the frame strongly or electric shock as this will result in damage to the screen.
-Do not scratch or press on the panel with any sharp objects, such as pencil or pen as this may result in damage to
the panel.
-Protect the module from the ESD as it may damage the electronic circuit (C-MOS).
-Make certain that treatment person’s body is grounded through wristband.
-Do not leave the module in high temperature and in areas of high humidity for a long time.
-Avoid contact with water as it may a short circuit within the module.
-If the surface of panel becomes dirty, please wipe it off with a soft material. (Cleaning with a dirty or rough cloth
may damage the panel.)

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1. Exploded view diagram with list of items

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No. Description Q’ty
1 MIDDLE_FRAME 1
2 Cover_IO 1
3 REAR_COVER NA 1
4 KEY 1
5 KEY_POWER 1
6 STAND_BUTTON 1
7 Latch 1
8 MAINFRAME 1
9 BEZEL_BTM 1
10 BKT_LOCKER 1 No. Part No. Description Q’ty
11 SPRING 2 15 0M1G3030 4120 SCREW 3 4(MIDDLEFRAME/PANEL) 20
12 LOGO DELL 1 15 0M1G3030 4120 SCREW 3 4(MIDDLEFRAME/PANEL) 3
13 TAPE_ACETATE 1 16 Q01G6019 1 SCREW（MIDDLE FRAME/KEY BOARD) 4
14 INSULATING SHEET 1 17 0D1G1030 6120 SCREW D3 6(MAIN BOARD/POWER BOARD/MAINFRAME) 8
22 STANDASS'Y 1 18 QM1G38400601200ARA SCREW -- 6mm(POWER BOARD/MAINFRAME) 1
23 BASE_ASS’Y 1 19 0Q1G2030 6120 SCREW M3 6(LATCH /REAR COVER) 1
24 PANEL 1 19 0Q1G2030 6120 SCREW M3 6(LATCH /REAR COVER) 4
25 GASKET 1 20 QM1G31300301200ARA SCREW 3 3(DECO BEzEL/PANEL) 5
26 SPONGE 1 21 0M1G2940 10225 CR3 SCREW M4 10(STAND/REAR COVER) 4

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2. Wiring connectivity diagram

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3. Mechanical Instruction
Tools Required
Listthetypeandsizeofthetoolsthatwouldtypicallycanbeusedtodisassembletheproducttoapoint
wherecomponentsandmaterialsrequiringselectivetreatmentcanberemoved.
ToolDescription:
- Phillip head Screwdriver
- Hex Screwdriver
- Penknife

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3.1 Disassembly Procedures:
Step Figure Remark
S1.Before
disassemble
Turnoffpower,
Unplugexternalcables
fromproduct
S2.Remove the
STAND-BASE
ASS’Y
.
S3.Remove the
REAR COVER
Use a Philips-head
screwdriver to remove 4
screws for unlocking
mechanisms.
(No.1~4 screw
size=M4x10; Torque:
12±2kgf.cm)
Use Penknife to

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separate the bezel and
rear cove follow the
arrows in sequence,
then you can take out
rear cover.
S4. Remove the
main frame
Tear off the aluminum
foilsand Disconnect
the cables
Use a Philips-head
screwdriver to remove 3
screws for unlocking the
mainframe
(No.1~3 Screw size=M3x4,
Torque: 3±0.5kgf.cm)

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S5.Remove main
board and power
board
Remove the Mylar.
Use a Philips-head
screwdriver to remove 4
screws for unlocking the
main board and the
adapter board
(No.1~8 screw size=D3x6,
Torque: 6±1kgf.cm)
(No.9 screw size=M4x6,
Torque: 6±1kgf.cm)
Disconnect all of the
cables

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S6.Remove the
bezel and panel
Use a Philips-head
screwdriver to remove
20 screws for unlocking
the middle plastic bezel
with the whole unit, and
then remove the middle
plastic bezel carefully.
(No.1~20 screw
size=M3x4,
Torque=3±0.5kgfxcm)
Use a Philips-head
screwdriver to remove 5
screws for unlocking the
BEZEL_BTM and the
Panel.
(No.1~5 screw size=M3x3,
Torque=3±0.5kgf.cm)
S7.Remove the
USB board
Use a Philips-head
screwdriver to remove 1
screws to remove the
USB board. Disconnect
the cables of the USB
board
(No.1 screw size=M3x6,
Torque=4±1kgf.cm)
S8. Remove the
Key board
Use a Philips-head
screwdriver to remove 4
screws for unlocking the
key board and the middle
frame. Disconnect the
pin.
(No.1~4 screw
size=Q2x2.5,
Torque=0.9±0.4kgf.cm)

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3.2 Assembly Procedures:
Step Figure Remark
S1.Assembly the
Key board
Use a Philips-head
screwdriver to tighten 4
screws for locking the
Key board
(No.1~4 screw
size=Q2x2.5,
Torque=0.9±0.4kgf.cm)
S2.Assembly the
USB BOARD
Connect the cables of
the USB board
Use a Philips-head
screwdriver to screw 1
screw for locking the
USB board.
(No.1 screw size=M3x6,
Torque=4±1kgf.cm)
S3.Assembly the
Bezel and panel
Use a Philips-head
screwdriver to screw 5
screws for locking the
BEZEL_BTM and the
Panel.
(No.1~5 screw size=M3x3,
Torque=3±0.5kgf.cm)
Use a Philips-head
screwdriver to screw 20
screws for locking the
middle plastic bezel with
the whole unit, and then
remove the middle
plastic bezel carefully.
(No.1~20 screw
size=M3x4,
Torque=3±0.5kgfxcm)
S4. Assembly the
MAIN board and
power board

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Connect all of the cables
Use a Philips-head
screwdriver to screw 4
screws for locking the
main board and the
adapter board
(No.1~8 screw size=D3x6,
Torque: 6±1kgf.cm)
(No.9 screw size=M4x6,
Torque: 6±1kgf.cm)
Paste the Mylar.
S5. Assembly
the Main Frame
Use a Philips-head
screwdriver to screw 3
screws for locking the
mainframe
(No.1~3 Screw size=M3x4,
Torque: 3±0.5kgf.cm)

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Connect the cables
Paste the aluminum
foils
S6.Assembly the
Rear cover
Use a Philips-head
screwdriver to screw 4
screws for locking Rear
cover.
(No.1~4 screw
size=M4x10; Torque:
12±2kgf.cm)

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S7.Assembly the
Stand

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4. Trouble shooting instructions

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