Dell W12C User manual

Inspiron 24
3000
Service Manual
Computer Model: Inspiron 24–3464
Regulatory Model: W12C
Regulatory Type: W12C006

Notes, cautions, and warnings
NOTE: A NOTE indicates important information that helps you make better
use of your product.
CAUTION: A CAUTION indicates either potential damage to hardware or loss
of data and tells you how to avoid the problem.
WARNING: A WARNING indicates a potential for property damage, personal
injury, or death.
©2016 Dell Inc. All rights reserved. This product is protected by U.S. and international
copyright and intellectual property laws. Dell and the Dell logo are trademarks of Dell Inc. in
the United States and/or other jurisdictions. All other marks and names mentioned herein may
be trademarks of their respective companies.
2016 - 09
Rev. A00

Contents
Before working inside your computer.....................................9
Before you begin ...............................................................................................9
Safety instructions............................................................................................10
Recommended tools........................................................................................11
Screw list...........................................................................................................11
After working inside your computer......................................13
Technical overview................................................................... 14
Inside view of your computer..........................................................................14
System-board components.............................................................................15
Removing the stand assembly.................................................17
Procedure to remove easel stand....................................................................17
Procedure to remove pedestal stand..............................................................18
Procedure to remove stand riser from stand base...................................20
Replacing the stand assembly.................................................22
Procedure to replace easel stand................................................................... 22
Procedure to replace pedestal stand..............................................................22
Procedure to replace stand riser to stand base........................................22
Removing the back cover........................................................ 23
Prerequisites.....................................................................................................23
Procedure.........................................................................................................23
Replacing the back cover.........................................................25
Procedure.........................................................................................................25
Post-requisites................................................................................................. 25
3

Removing the optical drive..................................................... 26
Prerequisites.....................................................................................................26
Procedure........................................................................................................ 26
Replacing the optical drive......................................................29
Procedure........................................................................................................ 29
Post-requisites.................................................................................................29
Removing the hard drive..........................................................30
Prerequisites.................................................................................................... 30
Procedure........................................................................................................ 30
Replacing the hard drive.......................................................... 33
Procedure.........................................................................................................33
Post-requisites................................................................................................. 33
Removing the memory modules............................................34
Prerequisites.....................................................................................................34
Procedure........................................................................................................ 34
Replacing the memory modules............................................ 36
Procedure........................................................................................................ 36
Post-requisites................................................................................................. 37
Removing the wireless card.................................................... 38
Prerequisites.....................................................................................................38
Procedure........................................................................................................ 38
Replacing the wireless card.................................................... 40
Procedure........................................................................................................ 40
Post-requisites................................................................................................. 41
4

Removing the heat sink............................................................42
Prerequisites.....................................................................................................42
Procedure........................................................................................................ 42
Replacing the heat sink............................................................44
Procedure........................................................................................................ 44
Post-requisites.................................................................................................44
Removing the fan...................................................................... 45
Prerequisites.....................................................................................................45
Procedure........................................................................................................ 45
Replacing the fan.......................................................................47
Procedure.........................................................................................................47
Post-requisites................................................................................................. 47
Removing the coin-cell battery..............................................48
Prerequisites.................................................................................................... 48
Procedure........................................................................................................ 49
Replacing the coin-cell battery..............................................50
Procedure........................................................................................................ 50
Post-requisites.................................................................................................50
Removing the microphone......................................................51
Prerequisites..................................................................................................... 51
Procedure.........................................................................................................51
Replacing the microphone...................................................... 53
Procedure.........................................................................................................53
Post-requisites................................................................................................. 53
5

Removing the camera.............................................................. 54
Prerequisites.....................................................................................................54
Procedure........................................................................................................ 54
Replacing the camera...............................................................56
Procedure........................................................................................................ 56
Post-requisites.................................................................................................56
Removing the system board....................................................57
Prerequisites.....................................................................................................57
Procedure.........................................................................................................57
Replacing the system board....................................................60
Procedure........................................................................................................ 60
Post-requisites.................................................................................................60
Removing the VESA-mount bracket...................................... 61
Prerequisites.....................................................................................................61
Procedure.........................................................................................................61
Replacing the VESA-mount bracket...................................... 63
Procedure........................................................................................................ 63
Post-requisites.................................................................................................63
Removing the speaker cover.................................................. 64
Prerequisites.................................................................................................... 64
Procedure........................................................................................................ 64
Replacing the speaker cover...................................................66
Procedure........................................................................................................ 66
Post-requisites.................................................................................................66
6

Removing the speakers............................................................ 67
Prerequisites.....................................................................................................67
Procedure.........................................................................................................67
Replacing the speakers............................................................ 69
Procedure........................................................................................................ 69
Post-requisites.................................................................................................69
Removing the control-buttons board...................................70
Prerequisites.....................................................................................................70
Procedure........................................................................................................ 70
Replacing the control-buttons board................................... 72
Procedure.........................................................................................................72
Post-requisites................................................................................................. 72
Removing the display assembly..............................................73
Prerequisites.....................................................................................................73
Procedure.........................................................................................................74
Replacing the display assembly..............................................78
Procedure.........................................................................................................78
Post-requisites................................................................................................. 78
Removing the rubber feet....................................................... 80
Prerequisites.................................................................................................... 80
Procedure........................................................................................................ 80
Replacing the rubber feet........................................................82
Procedure........................................................................................................ 82
Post-requisites.................................................................................................82
7

Clearing Forgotten Passwords................................................83
Prerequisites.....................................................................................................83
Procedure........................................................................................................ 83
Post-requisites.................................................................................................84
Clearing CMOS Settings...........................................................85
Prerequisites.....................................................................................................85
Procedure........................................................................................................ 85
Post-requisites.................................................................................................86
Flashing the BIOS...................................................................... 87
System diagnostic lights.......................................................... 88
Getting help and contacting Dell...........................................89
Self-help resources......................................................................................... 89
Contacting Dell............................................................................................... 90
8

Before working inside your
computer
NOTE: The images in this document may differ from your computer
depending on the configuration you ordered.
Before you begin
1 Save and close all open files and exit all open applications.
2 Shut down your computer.
The shut-down instruction varies depending on the operating system
installed on your computer.
– Windows 10: Click Start → Power → Shut down.
– Windows 8.1: On the Start screen, click the power icon → Shut
down.
– Windows 7: Click Start → Shut down.
NOTE: If you are using a different operating system, see the
documentation of your operating system for shut-down
instructions.
3 Disconnect your computer and all attached devices from their electrical
outlets.
4 Disconnect all cables such as telephone cables, network cables, and so
on, from your computer.
5 Disconnect all attached devices and peripherals, such as keyboard,
mouse, monitor, and so on, from your computer.
6 Remove any media card and optical disc from your computer, if
applicable.
7 After the computer is unplugged, press and hold the power button for 5
seconds to ground the system board.
CAUTION: Place the computer on a flat, soft, and clean surface to
avoid scratches on the display.
8 Place the computer face down.
9

Safety instructions
Use the following safety guidelines to protect your computer from potential
damage and ensure your personal safety.
WARNING: Before working inside your computer, read the safety
information that shipped with your computer. For more safety best
practices, see the Regulatory Compliance home page at
www.dell.com/regulatory_compliance.
WARNING: Disconnect all power sources before opening the
computer cover or panels. After you finish working inside the
computer, replace all covers, panels, and screws before connecting to
the electrical outlet.
CAUTION: To avoid damaging the computer, ensure that the work
surface is flat and clean.
CAUTION: To avoid damaging the components and cards, handle
them by their edges, and avoid touching pins and contacts.
CAUTION: You should only perform troubleshooting and repairs as
authorized or directed by the Dell technical assistance team. Damage
due to servicing that is not authorized by Dell is not covered by your
warranty. See the safety instructions that shipped with the product or
at www.dell.com/regulatory_compliance.
CAUTION: Before touching anything inside your computer, ground
yourself by touching an unpainted metal surface, such as the metal at
the back of the computer. While you work, periodically touch an
unpainted metal surface to dissipate static electricity, which could
harm internal components.
CAUTION: When you disconnect a cable, pull on its connector or on
its pull tab, not on the cable itself. Some cables have connectors with
locking tabs or thumb-screws that you must disengage before
disconnecting the cable. When disconnecting cables, keep them
evenly aligned to avoid bending any connector pins. When connecting
cables, ensure that the ports and connectors are correctly oriented
and aligned.
CAUTION: Press and eject any installed card from the media-card
reader.
10

Recommended tools
The procedures in this document may require the following tools:
• Phillips screwdriver
• Plastic scribe
Screw list
The following table provides the list of screws that are used for securing
different components to the palm rest and keyboard assembly.
Component Secured to Screw type Quantity Screw
image
Easel stand
bracket
back cover M4x8 2
Pedestal stand display-panel
base
M4x8 4
Optical-drive
assembly
Display-
assembly base
M3x5 1
Optical-drive
bracket
Optical drive M2x2.5 1
Hard-drive
assembly
Display-
assembly base
M3x5 1
Hard drive Hard-drive
bracket
M3x5 3
Wireless card Wireless-card
bracket
M2x2.5 1
Heat-sink
assembly
Display-
assembly base
M3x5 1
Fan Display-
assembly base
M3x5 2
System board Display-
assembly base
M3x5 4
11

Component Secured to Screw type Quantity Screw
image
VESA-mount
bracket
Display-
assembly base
M3x5 4
Speaker cover Display-
assembly base
M3x5 4
Speaker-cable
routing
VESA-mount
bracket
M3x5 1
Rubber feet Display bezel M3x5 2
Display-
assembly base
Display bezel M3x5 16
12

After working inside your
computer
CAUTION: Leaving stray or loose screws inside your computer may
severely damage your computer.
1 Replace all screws and ensure that no stray screws remain inside your
computer.
2 Connect any external devices, peripherals, or cables you removed before
working on your computer.
3 Replace any media cards, discs, or any other parts that you removed
before working on your computer.
4 Connect your computer and all attached devices to their electrical
outlets.
5 Turn on your computer.
13

Technical overview
WARNING: Before working inside your computer, read the safety
information that shipped with your computer and follow the steps in
Before working inside your computer. After working inside your
computer, follow the instructions in After working inside your
computer. For more safety best practices, see the Regulatory
Compliance home page at www.dell.com/regulatory_compliance.
Inside view of your computer
1 control-buttons board 2 hard-drive assembly
3 optical-drive assembly 4 display-assembly base
5 microphone board 6 camera module
7 fan 8 heat sink
9 wireless card 10 memory modules
11 system board 12 coin-cell battery
13 VESA-mount bracket 14 speaker cover
14

System-board components
1 wireless-card slot (NGFF_WI-FI) 2 memory-module slot (DIMM1)
3 camera-cable connector
(WEBCAM) 4 memory-module slot (DIMM2)
5 Service mode jumper 6 Password clear jumper
(PASSWORD)
7 speaker-cable connector
(SPEAKER) 8 CMOS clear jumper (RTC_CMOS)
9 coin-cell battery 10 touch-screen board cable
connector (TOUCH)
11 control-buttons board cable
connector (PWRCN1) 12 display-panel power cable connector (CONVERTER)
15

13 display-cable connector (LVDS) 14 hard-drive data cable
connector (SATA_HDD)
15 optical-drive cable connector
(SATA_ODD) 16 hard-drive and optical-drive power cable connector
(SATAP1)
17 fan-cable connector (FAN_CPU)
16

Removing the stand assembly
WARNING: Before working inside your computer, read the safety
information that shipped with your computer and follow the steps in
Before working inside your computer. After working inside your
computer, follow the instructions in After working inside your
computer. For more safety best practices, see the Regulatory
Compliance home page at www.dell.com/regulatory_compliance.
Procedure to remove easel stand
NOTE: The type of stand assembly varies depending on the
configuration you ordered.
1 Place the computer face down on a soft cloth or a clean surface.
2 Using your fingertips, lift the stand cover.
3 Slide and remove the stand cover at an angle away from the stand.
1 stand 2 stand cover
3 back cover
4 Remove the screws that secure the stand bracket to the back cover.
17

5 Lift the stand off the back cover.
1 stand 2 stand bracket
3 screws (2) 4 back cover
Procedure to remove pedestal stand
NOTE: The type of stand assembly varies depending on the
configuration you ordered.
1 Place the computer face down on a soft cloth or a clean surface.
2 Release the tabs on the stand cover.
18

3 Slide and remove the stand cover away from the computer.
1 stand cover 2 back cover
4 Remove the screws that secure the stand to the display-panel base.
5 Lift the stand upward at an angle and slide it away from the computer.
1 back cover 2 screws (4)
3 stand
19

Procedure to remove stand riser from stand base
NOTE: If you need to remove either the stand base or stand riser from
the stand assembly, follow the steps below.
1 Lift the screw handle on the stand base.
2 Using the screw handle, loosen the captive thumbscrew that secures the
stand base to the stand riser.
1 screw handle 2 captive thumbscrew
3 stand base
20