Dell C5519Q User manual

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55" LCD Monitor Dell C5519Q
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.)

1. Exploded view diagram with list of items
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S8
S7
S6
S5
S4
S3
S2
S1
9
10
8
7
6
3
2
4
1
12
13
14
15
16
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No. Description Q’ty
1 LENS 1
2 KEY 1
3 COVER_KEY 1
4 DECO_BEZEL 1
5 BKT_STAND 1
6 INSULATING SHEET 1
7 BKT_POWER_TOP 1
8 MAINFRAME 1
9 BKT_VESA 2 No. Part No. Description Q’ty
10 REAR_COVER 1 S1 001G6021 1 SCREW Q4 10(SPEAKER/PANEL) 4
11 COVER_HINGE 1 S2 0M1G1740 14225 CR3 SCREW M4 14(COVER_HINGE/REAR COVER) 4
12 PANEL 1 S3 0M1G1030 6 47 CR3 SCREW M3 6(REAR COVER/PANEL) 20
13 KEY BOARD 1 S4 0M1G 130 6 47 CR3 SCREW M3 6(AC SOCKET ASS'Y/BKT_POWER_TOP) 2
14 SPEAKER 2 S5 0M1G3030 4 47 CR3 SCREW P3 4(MAIN BOARD/POWER BOARD/MAINFRAME) 15
15 ADAPTER BOARD 1 S6 0D1G1030 6120 SCREW D3 6(MAIN BOARD/MAINFRAME) 6
16 MAIN BOARD 1 S7 0M1G1140 6120 SCREW M4 6(MAINFRAME) 1
17 IR BOARD 1 S8 0M1G1740 8 47 CR3 SCREW M4 8(BKT_STAND/PANEL) 4

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2. Wiring connectivity diagram
3.
Mechanical Instruction

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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
cover hinge
2
1
3 4
Use a Philips-head
screwdriver to remove 4
screws for remove the
cover hinge.
(No.1~4 screw
size=M4x14;
Torque=12±2kgf.cm)
4
5
6
7
8
9
10
Use a Philips-head
screwdriver to remove
3
19
20
11
12
13
20 screws for remove
the Rear Cover.
2(No.1~20 screw
18
17
16 15
14 size=M3x6;
Torque=4±1kgf.cm)
S3. Remove the 1
REAR COVER
Use Penknife to
separate the bezel and
rear cove follow the
arrows in sequence, then
you can take out rear
cover.

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S4. Disconnect all
of the cable and
remove the
speakers
1
2
3
4
1. Disconnect all of the
pins and remove the
speakers.
2. Use a Philips-head
screwdriver to
remove 4 screws for
remove the
Speakers
(No.1~4 screw
size=Q4x10;
Torque=8±1kgf.cm)
1
2
Use a Philips-head
screwdriver to remove 4
screws for remove the
BKT and Key board
(No.1~4 screw
size=Q4x10
Torque= 4±1kgf.cm)
S5. Remove the
BKT and the key 3
board
4

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1
5
1
1
4
2
2
6
3
7
2
5
4
3
8
3
6
4
Use a Philips-head
screwdriver to remove 8
screws for remove the
Power board.
(No.1~8 screw
size=P3x4;
Torque=4±1kgf.cm)
Use a Philips-head
S6. Remove the screwdriver to remove 6
Main &Power screws for remove the
Board Main board.
(No.1~6 screw
size=D3x6
Torque=6±1kgf.cm )
Use a hex screwdriver to
remove 4 screws for
remove the Main board.
(No.1~4 Hex-screw
Torque=4.5±0.5kgf.cm)
Use finger to Remove
the Mylar
S7. Remove the
Mylar and remove
the screws to
remove the BKT
stand
3
1
2
4
Use a Philips-head
screwdriver to remove 4
screws for remove the
BKT stand
(No.1~4 screw
size=M4x8
Torque=6±1kgf.cm )

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Use a Philips-head
screwdriver to remove 2
S8. Remove the
DECO bezel
screws for remove
DECO Bezel
(No.1~2 screw
size=P3x4;
Torque=4±1kgf.cm )
1 2
S9. Disconnect the
FFC cable
Disconnect the pin
S10. Remove the
screw to remove
the AC SOCKET
ASS'Y
1
2
3
Use a Philips-head
screwdriver to remove 3
screws for remove the
BKT stand
(No.1~2 screw
size=M3x6
Torque=4±1kgf.cm
No.3 screw size=M4x6
Torque=12±2kgf.cm)
S11. The Deco
bezel and the IR
board
The IR board

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3.2 Assembly Procedures:
Step Figure Remark
S1. Assembly the
Deco bezel and
the IR board
The IR board
1 2
Use a Philips-head
screwdriver to tighten 3
screws for the BKT
stand
(No.1~2 screw
size=M3x6
Torque=4±1kgf.cm
No.3 screw size=M4x6
Torque=12±2kgf.cm)
S2. Tighten the
AC SOCKET
ASS'Y
3
S3. Connect the
FFC cable
Connect the pin
Use a Philips-head
screwdriver to screw 2
S4. Tighten the
DECO bezel
screws for tighten
DECO Bezel
(No.1~2 screw
size=P3x4;
Torque=4±1kgf.cm )
1
2

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S5. Paste the
Mylar and screw
the screws to
tighten the BKT
stand
Use finger to paste the
Mylar
Use a Philips-head
screwdriver to screw 4
screws for tighten the
BKT stand
(No.1~4 screw
size=M4x8
Torque=6±1kgf.cm )
Use a Philips-head
screwdriver to screw 8
screws for tiighten the
Power board.
(No.1~8 screw
size=P3x4;
Torque=4±1kgf.cm)
S6. Remove the
Main &Power
Board
Use a Philips-head
screwdriver to screew 6
screws for tighten the
Main board.
(No.1~6 screw
size=D3x6
Torque=6±1kgf.cm )
Use a hex screwdriver to
screw4 screws for
tighten the Main board.
(No.1~4 Hex-screw
Torque=4.5±0.5kgf.cm)

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S7. Tighten the
BKT and the key
board
Use a Philips-head
screwdriver to screw 4
screws for tighten the
BKT and Key board
(No.1~4 screw
size=Q4x10
Torque= 4±1kgf.cm)
S8. Connect all of
the cable and
assembly the
speakers
1 2
3
4
1. Connect all of the
pins and assembly
the speakers.
2. Use a Philips-head
screwdriver to screw
4 screws for tighten
the Speakers
(No.1~4 screw
size=Q4x10;
Torque=8±1kgf.cm)

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S9. Assembly the
REAR COVER
Use a Philips-head
screwdriver to screw 20
screws for tighten the
Rear Cover.
(No.1~20 screw
size=M3x6;
Torque=4±1kgf.cm)

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4.Trouble shooting instructions

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