Dell Inspiron 20 User manual

Inspiron 20
Owner's Manual
Computer Model: Inspiron 20 Model 3048
Regulatory Model: W09B
Regulatory Type: W09B001

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 ©2014 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.
2014 - 03
Rev. A00

Contents
Before Working Inside Your Computer.................................... 9
Before You Begin .............................................................................................. 9
Safety Instructions............................................................................................. 9
Recommended Tools...................................................................................... 10
After Working Inside Your Computer......................................12
Technical Overview......................................................................13
Inside View of Your Computer........................................................................ 13
System Board Components ............................................................................14
Removing the Stand Assembly..................................................16
Procedure.........................................................................................................16
Replacing the Stand Assembly.................................................. 19
Procedure.........................................................................................................19
Removing the Back Cover..........................................................20
Prerequisites.................................................................................................... 20
Procedure........................................................................................................ 20
Replacing the Back Cover...........................................................21
Procedure.........................................................................................................21
Post-requisites................................................................................................. 21
Removing the Hard Drive...........................................................22
Prerequisites.....................................................................................................22
Procedure.........................................................................................................22

Replacing the Hard Drive........................................................... 25
Procedure.........................................................................................................25
Post-requisites................................................................................................. 25
Removing the Optical Drive...................................................... 26
Prerequisites.....................................................................................................26
Procedure........................................................................................................ 26
Replacing the Optical Drive.......................................................28
Procedure........................................................................................................ 28
Post-requisites.................................................................................................28
Removing the Memory Module(s)............................................29
Prerequisites.....................................................................................................29
Procedure........................................................................................................ 30
Replacing the Memory Module(s)............................................ 32
Procedure.........................................................................................................33
Post-requisites.................................................................................................34
Removing the Control-Buttons Board....................................35
Prerequisites.....................................................................................................35
Procedure.........................................................................................................35
Replacing the Control-Buttons Board....................................37
Procedure.........................................................................................................37
Post-requisites................................................................................................. 37
Removing the Converter Board................................................38
Prerequisites.....................................................................................................38
Procedure........................................................................................................ 38

Replacing the Converter Board................................................40
Procedure........................................................................................................ 40
Post-requisites.................................................................................................40
Removing the System-Board Shield........................................ 41
Prerequisites.....................................................................................................41
Procedure.........................................................................................................41
Replacing the System-Board Shield........................................42
Procedure........................................................................................................ 42
Post-requisites.................................................................................................42
Removing the Antenna............................................................... 43
Prerequisites.....................................................................................................43
Procedure........................................................................................................ 43
Replacing the Antenna................................................................45
Procedure........................................................................................................ 45
Post-requisites.................................................................................................45
Removing the VESA-Mount Bracket....................................... 46
Prerequisites.................................................................................................... 46
Procedure........................................................................................................ 46
Replacing the VESA-Mount Bracket........................................47
Procedure.........................................................................................................47
Post-requisites................................................................................................. 47
Removing the Speaker Cover....................................................48
Prerequisites.................................................................................................... 48
Procedure........................................................................................................ 48

Replacing the Speaker Cover....................................................49
Procedure........................................................................................................ 49
Post-requisites.................................................................................................49
Removing the Microphone........................................................50
Prerequisites.................................................................................................... 50
Procedure........................................................................................................ 50
Replacing the Microphone.........................................................52
Procedure.........................................................................................................52
Post-requisites................................................................................................. 52
Removing the Power-Adapter Port......................................... 53
Prerequisites.....................................................................................................53
Procedure.........................................................................................................53
Replacing the Power-Adapter Port..........................................55
Procedure.........................................................................................................55
Post-requisites................................................................................................. 55
Removing the Wireless Card..................................................... 56
Prerequisites.....................................................................................................56
Procedure........................................................................................................ 56
Replacing the Wireless Card......................................................58
Procedure........................................................................................................ 58
Post-requisites.................................................................................................58
Removing the Heat Sink............................................................. 59
Prerequisites.....................................................................................................59
Procedure........................................................................................................ 59

Replacing the Heat Sink..............................................................61
Procedure.........................................................................................................61
Post-requisites................................................................................................. 61
Removing the Coin-Cell Battery.............................................. 62
Prerequisites.....................................................................................................62
Procedure........................................................................................................ 62
Replacing the Coin-Cell Battery.............................................. 64
Procedure........................................................................................................ 64
Post-requisites.................................................................................................64
Removing the Speakers.............................................................. 65
Prerequisites.....................................................................................................65
Procedure ....................................................................................................... 65
Replacing the Speakers...............................................................67
Procedure ........................................................................................................67
Post-requisites................................................................................................. 67
Removing the Fan........................................................................ 68
Prerequisites.................................................................................................... 68
Procedure........................................................................................................ 68
Replacing the Fan.........................................................................70
Procedure........................................................................................................ 70
Post-requisites.................................................................................................70
Removing the System Board......................................................71
Prerequisites..................................................................................................... 71
Procedure ........................................................................................................72

Replacing the System Board......................................................74
Procedure.........................................................................................................74
Post-requisites................................................................................................. 74
Removing the Camera.................................................................75
Prerequisites.....................................................................................................75
Procedure.........................................................................................................75
Replacing the Camera................................................................. 81
Procedure.........................................................................................................81
Post-requisites.................................................................................................82
Flashing the BIOS......................................................................... 83
Getting Help and Contacting Dell........................................... 84
Self-Help Resources........................................................................................84
Contacting Dell................................................................................................84

Before Working Inside Your
Computer
CAUTION: To avoid damaging the components and cards, handle
them by their edges and avoid touching pins and contacts.
Before You Begin
1 Save and close all open files and exit all open applications.
2 Shut down your computer.
– Windows 8: Move your mouse pointer to the upper-right or lower-
right corner of the screen to open the charms sidebar, and then click
or tap Settings → Power → 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.
Safety Instructions
Use the following safety guidelines to protect your computer from potential
damage and ensure your personal safety.
9

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 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, make sure 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: Only a certified service technician is authorized to remove
the computer cover and access any of the components inside the
computer. See the safety instructions for complete information about
safety precautions, working inside your computer, and protecting
against electrostatic discharge.
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, make sure that the ports and connectors are correctly oriented
and aligned.
CAUTION: To disconnect a network cable, first unplug the cable from
your computer and then unplug the cable from the network device.
CAUTION: Press and eject any installed card from the media-card
reader.
Recommended Tools
The procedures in this document may require the following tools:
10

• 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 make sure 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 part(s) 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 dell.com/regulatory_compliance.
Inside View of Your Computer
1 fan 2 camera
3 microphone 4 heat sink
5 wireless card 6 coin-cell battery
7 memory module(s) 8 system board
9 speaker cover 10 display-panel base
11 VESA-mount bracket 12 hard-drive assembly
13 control-buttons board 14 optical-drive assembly
15 converter board
13

System Board Components
1 fan-cable connector (FAN_CPU) 2 processor (CPU1)
3 power-adapter port cable
connector (ATX2) 4 converter-board cable connector (CONVERTER)
5 hard-drive and optical-drive
power cable connector (SATAP1) 6 optical-drive cable connector (SATA_ODD)
7 hard-drive cable connector
(SATA_HDD) 8 control-buttons board cable connector (PWRCN1)
14

9 touch-control board cable
connector (optional) (TOUCH) 10 speaker-cable connector (SPEAKER)
11 memory-module slot (DIMM1) 12 memory-module slot (DIMM2)
13 camera-cable connector
(WEBCAM) 14 display-cable connector (LVDS)
15 wireless-card slot (NGFF_WIFI) 16 coin-cell battery (BATTERY)
15

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 dell.com/regulatory_compliance.
Procedure
1 Place the computer face down on a soft cloth or a clean surface.
2 Release the tabs on the stand cover.
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 assembly to the display-panel
base.
16

5 Pivot the stand assembly upward and slide it away from the computer.
1 screws (4) 2 back cover
3 stand assembly
To remove either the stand base or stand riser from the stand assembly,
follow the steps below:
6 Lift the screw handle on the stand base.
7 Using the screw handle, loosen the captive thumbscrew that secures the
stand base to the stand riser.
17

8 Slide the stand base off the stand riser.
1 stand riser 2 screw handle
3 captive thumbscrew 4 stand base
18

Replacing 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 dell.com/regulatory_compliance.
Procedure
Follow the steps below to replace either the stand base or the stand riser:
1 Slide the stand base into the slot on the stand riser.
2 Tighten the captive thumbscrew and fold the screw handle on the stand
base.
Follow the steps below to replace the stand assembly:
3 Slide the tabs on the stand assembly into the slots on the back cover.
4 Replace the screws that secure the stand assembly to the display-panel
base.
5 Slide the tabs on the stand cover into the slots on the back cover and
snap the stand cover until it clicks into place.
19

Removing the Back Cover
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 dell.com/regulatory_compliance.
Prerequisites
Follow the procedure from step 1 to step 5 in “Removing the Stand Assembly”.
Procedure
1 Using a plastic scribe, pry the back cover from the display bezel starting
from around the optical-drive area.
2 Lift the back cover at an angle and remove it from the computer.
1 plastic scribe 2 display bezel
3 back cover
20