Dell Inspiron 24 User manual

Inspiron 24
7000 Series
Service Manual
Computer Model: Inspiron 24–7459
Regulatory Model: W07C
Regulatory Type: W07C003

Notes, cautions, and warnings
NOTE: A NOTE indicates important information that helps you make better
use of your computer.
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.
Copyright ©2015 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.
2015 - 08
Rev. A00

Contents
Before working inside your computer.....................................9
Before you begin ...............................................................................................9
Safety instructions............................................................................................10
Recommended tools........................................................................................11
After working inside your computer......................................12
Technical overview....................................................................13
Inside view of your computer..........................................................................13
Stand-base components........................................................................... 14
Display panel with stand assembly............................................................15
System board components ............................................................................ 16
Removing the memory module.............................................. 17
Procedure......................................................................................................... 17
Replacing the memory module.............................................. 19
Procedure.........................................................................................................19
Removing the base cover.........................................................21
Procedure.........................................................................................................21
Replacing the base cover.........................................................23
Procedure.........................................................................................................23
Removing the mSATA card......................................................24
Prerequisites.....................................................................................................24
Procedure........................................................................................................ 24
3

Replacing the mSATA card...................................................... 26
Procedure........................................................................................................ 26
Post-requisites................................................................................................. 27
Removing the coin-cell battery..............................................28
Prerequisites.................................................................................................... 28
Procedure........................................................................................................ 28
Replacing the coin-cell battery..............................................30
Procedure........................................................................................................ 30
Post-requisites.................................................................................................30
Removing the wireless card.....................................................31
Prerequisites..................................................................................................... 31
Procedure.........................................................................................................31
Replacing the wireless card.....................................................33
Procedure.........................................................................................................33
Post-requisites.................................................................................................34
Removing the computer base.................................................35
Prerequisites.....................................................................................................35
Procedure.........................................................................................................35
Replacing the computer base................................................. 37
Procedure.........................................................................................................37
Post-requisites................................................................................................. 37
Removing the hard drive..........................................................38
Prerequisites.....................................................................................................38
Procedure........................................................................................................ 38
4

Replacing the hard drive.......................................................... 41
Procedure.........................................................................................................41
Post-requisites................................................................................................. 41
Removing the speakers............................................................42
Prerequisites.....................................................................................................42
Procedure ....................................................................................................... 42
Replacing the speakers............................................................ 44
Procedure ....................................................................................................... 44
Post-requisites.................................................................................................44
Removing the USB board.........................................................45
Prerequisites.....................................................................................................45
Procedure........................................................................................................ 45
Replacing the USB board......................................................... 47
Procedure.........................................................................................................47
Post-requisites................................................................................................. 47
Removing the fan......................................................................48
Prerequisites.................................................................................................... 48
Procedure........................................................................................................ 48
Replacing the fan...................................................................... 50
Procedure........................................................................................................ 50
Post-requisites.................................................................................................50
Removing the heat sink............................................................ 51
Prerequisites..................................................................................................... 51
Procedure.........................................................................................................52
5

Replacing the heat sink............................................................54
Procedure........................................................................................................ 54
Post-requisites.................................................................................................54
Removing the system board....................................................55
Prerequisites.....................................................................................................55
Procedure.........................................................................................................55
Replacing the system board....................................................58
Procedure........................................................................................................ 58
Post-requisites.................................................................................................58
Removing the back cover........................................................ 59
Prerequisites.....................................................................................................59
Procedure........................................................................................................ 59
Replacing the back cover.........................................................61
Procedure.........................................................................................................61
Post-requisites................................................................................................. 61
Removing the camera...............................................................62
Prerequisites.....................................................................................................62
Procedure for removing the 3D camera........................................................ 62
Procedure for removing the 2D camera........................................................ 64
Replacing the camera...............................................................66
Procedure for replacing the 3D camera.........................................................66
Procedure for replacing the 2D camera.........................................................66
Post-requisites.................................................................................................66
Removing the microphone......................................................67
Prerequisites.....................................................................................................67
Procedure.........................................................................................................67
6

Replacing the microphone......................................................69
Procedure........................................................................................................ 69
Post-requisites.................................................................................................69
Removing the converter board...............................................70
Prerequisites.....................................................................................................70
Procedure........................................................................................................ 70
Replacing the converter board............................................... 72
Procedure.........................................................................................................72
Post-requisites................................................................................................. 72
Removing the power-button module................................... 73
Prerequisites.....................................................................................................73
Procedure.........................................................................................................73
Replacing the power-button module....................................75
Procedure.........................................................................................................75
Post-requisites................................................................................................. 75
Removing the stand assembly................................................ 76
Prerequisites.....................................................................................................76
Procedure.........................................................................................................76
Replacing the stand assembly.................................................81
Procedure.........................................................................................................81
Post-requisites................................................................................................. 81
Removing the display panel.................................................... 83
Prerequisites.....................................................................................................83
Procedure........................................................................................................ 83
7

Replacing the display panel.................................................... 89
Procedure........................................................................................................ 89
Post-requisites.................................................................................................89
Removing the control-buttons board................................... 91
Prerequisites.....................................................................................................91
Procedure........................................................................................................ 92
Replacing the control-buttons board...................................94
Procedure........................................................................................................ 94
Post-requisites.................................................................................................94
Clearing forgotten passwords................................................ 95
Clearing CMOS settings........................................................... 97
Flashing the BIOS...................................................................... 99
Getting help and contacting Dell.........................................100
Self-help resources....................................................................................... 100
Contacting Dell.............................................................................................. 101
8

Before working inside your
computer
CAUTION: To avoid damaging the components and cards, handle
them by their edges and avoid touching pins and contacts.
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.
– Windows 10: Click or tap Start → Power → Shut down.
– Windows 8.1: On the Start screen, click or tap the power icon →
Shut down.
– Windows 7: Click or tap 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 scratching 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 power source.
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:
• Philips screwdriver
• Flat-head screwdriver
• Plastic scribe
11

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, and cables you removed
before working on your computer.
3 Replace any media cards, discs, and 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.
12

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
This chapter lists out the components on the computer base and display
panel.
13

Stand-base components
1 system board 2 wireless card
3 heat sink 4 coin-cell battery
5 memory modules 6 mSATA card
7 speakers (2) 8 USB board
9 hard-drive assembly 10 fan
14

Display panel with stand assembly
1 auxiliary antenna 2 auxiliary-antenna cable
3 right-microphone cable 4 right microphone
5 camera assembly 6 camera cable
7 left-microphone cable 8 left microphone
9 main-antenna cable 10 main antenna
11 display panel 12 middle cover
13 display cable 14 stand
15 converter cable 16 converter board
17 power-button board cable 18 control-buttons board
19 control-buttons board cable 20 display-backlight cable
15

System board components
1 wireless-card slot 2 display-cable connector
3 I/O-cable connector 4 fan-cable connector
5 USB-board cable connector 6 speaker-cable connector
7 CMOS and password jumpers 8 hard-drive connector
9 mSATA-card slot 10 memory-module slots (2)
11 coin-cell battery cable
connector
16

Removing the memory module
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
1 Loosen the captive screw that secures the memory-module cover to the
base cover.
2 Lift and slide the memory-module cover off the base cover.
1 captive screw 2 memory-module cover
3 base cover
3 Using your fingertips, spread apart the securing clips at each end of the
memory-module slot until the memory module pops up.
17

4 Remove the memory module from the memory-module slot.
1 securing clips (2) 2 memory-module slot
3 memory module
18

Replacing the memory module
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
1 Align the notch on the memory module with the tab on the memory-
module slot.
19

2 Insert the memory module into the memory-module slot and press the
memory module down until it clicks into place.
NOTE: If you do not hear the click, remove the memory module
and reinstall it.
1 tab 2 notch
3 memory-module slot 4 memory module
3 Insert the tabs on the memory-module cover into the slots on the base
cover and place the memory-module cover on the base cover.
4 Tighten the captive screw that secures the memory-module cover to the
base cover.
20