Dell Inspiron 20 3000 Series User manual

Inspiron 20 3000
Service Manual
Computer Model: Inspiron 20–3052
Regulatory Model: W15B
Regulatory Type: W15B002

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.
©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 - 08
Rev. A01

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
System-board components......................................................................14
Removing the stand..................................................... 16
Procedure................................................................................................16
Replacing the stand......................................................18
Procedure................................................................................................18
Replacing the optical drive........................................... 19
Prerequisites............................................................................................19
Procedure................................................................................................19
Removing the optical drive.......................................... 22
Procedure............................................................................................... 22
Post-requisites........................................................................................22
Removing the back cover............................................ 23
Prerequisites........................................................................................... 23
Procedure............................................................................................... 23
3

Replacing the back cover.............................................25
Procedure............................................................................................... 25
Post-requisites........................................................................................25
Removing the hard drive..............................................26
Prerequisites........................................................................................... 26
Procedure............................................................................................... 26
Replacing the hard drive.............................................. 29
Procedure............................................................................................... 29
Post-requisites........................................................................................29
Removing the memory module.....................................30
Prerequisites........................................................................................... 30
Procedure............................................................................................... 30
Replacing the memory module.....................................32
Procedure............................................................................................... 32
Post-requisites........................................................................................34
Removing the wireless card......................................... 35
Prerequisites........................................................................................... 35
Procedure............................................................................................... 35
Replacing the wireless card..........................................37
Procedure............................................................................................... 37
Post-requisites........................................................................................38
Removing the control-buttons board...........................40
Prerequisites........................................................................................... 40
Procedure............................................................................................... 40
4

Replacing the control-buttons board........................... 42
Procedure............................................................................................... 42
Post-requisites........................................................................................42
Removing the microphone........................................... 43
Prerequisites........................................................................................... 43
Procedure............................................................................................... 43
Replacing the microphone........................................... 45
Procedure............................................................................................... 45
Post-requisites........................................................................................45
Removing the system-board shield..............................46
Prerequisites........................................................................................... 46
Procedure............................................................................................... 46
Replacing the system-board shield.............................. 48
Procedure............................................................................................... 48
Post-requisites........................................................................................48
Removing the camera.................................................. 49
Prerequisites........................................................................................... 49
Procedure............................................................................................... 49
Replacing the camera.................................................. 53
Procedure............................................................................................... 53
Post-requisites........................................................................................53
Removing the coin-cell battery....................................54
Prerequisites........................................................................................... 54
Procedure............................................................................................... 54
5

Replacing the coin-cell battery.................................... 56
Procedure............................................................................................... 56
Post-requisites........................................................................................56
Removing the fan.........................................................57
Prerequisites........................................................................................... 57
Procedure............................................................................................... 57
Replacing the fan.........................................................59
Procedure............................................................................................... 59
Post-requisites........................................................................................59
Removing the heat sink............................................... 60
Prerequisites...........................................................................................60
Procedure............................................................................................... 60
Replacing the heat sink................................................62
Procedure............................................................................................... 62
Post-requisites........................................................................................62
Removing the speakers................................................63
Prerequisites........................................................................................... 63
Procedure............................................................................................... 63
Replacing the speakers................................................65
Procedure............................................................................................... 65
Post-requisites........................................................................................65
Removing the system board........................................ 66
Prerequisites...........................................................................................66
Procedure............................................................................................... 66
6

Replacing the system board.........................................69
Procedure............................................................................................... 69
Post-requisites........................................................................................69
Removing the display cable.......................................... 71
Prerequisites............................................................................................ 71
Procedure................................................................................................ 71
Replacing the display cable.......................................... 73
Procedure............................................................................................... 73
Post-requisites........................................................................................ 73
Removing the display assembly....................................74
Prerequisites........................................................................................... 74
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
BIOS setup program.................................................... 83
BIOS Overview........................................................................................83
Entering BIOS setup program................................................................. 83
Clearing Forgotten Passwords................................................................84
7

Prerequisites..................................................................................... 84
Procedure......................................................................................... 84
Post-requisites..................................................................................85
Clearing CMOS Settings.........................................................................85
Prerequisites.....................................................................................85
Procedure......................................................................................... 85
Post-requisites..................................................................................86
Flashing the BIOS........................................................ 87
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
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, 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.
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
1 speakers (2) 2 hard-drive assembly
3 control-buttons board 4 display assembly
5 fan 6 display-assembly base
7 heat sink 8 wireless card
9 memory module 10 system board
13

11 coin-cell battery
System-board components
1 wireless-card slot (NGFF_WIFI) 2 memory-module slot (DIMM1)
3 camera-cable connector
(WEBCAM) 4 CMOS clear jumper (CMCL R2)
14

5 Password clear jumper (PSWD) 6 speaker-cable connector
(SPEAKER)
7 coin-cell battery 8 touch-screen board cable
connector (TOUCH)
9 control-buttons board cable
connector 10 display-panel power cable connector (PWRCN)
11 display-cable connector 12 hard-drive data cable connector
(SATA_HDD)
13 optical-drive cable connector
(SATA_HDD) 14 hard-drive and optical-drive power cable connector (SATAP1)
15 fan-cable connector (FAN_CPU)
15

Removing the stand
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
NOTE: This chapter is applicable only for systems with an easel stand. For
systems with a pedestal stand, refer to the Quick Start Guide that came
with your computer.
1 Using a plastic scribe, pry the stand cover off the back cover.
2 Slide and remove the stand cover from the back cover.
1 stand cover 2 back cover
16

3 Close the stand and remove the screws that secure the stand to the back cover.
4 Slide and remove the stand from the back cover.
1 screws (2) 2 stand
17

Replacing the stand
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
NOTE: This chapter is applicable only for systems with an easel stand. For
systems with a pedestal stand, refer to the Quick Start Guide that came
with your computer.
1 Insert the tabs on the stand bracket into the slots on the back cover.
2 Align the screw holes on the stand with the screw holes on the back cover.
3 Replace the screws that secure the stand to the back cover.
4 Replace the stand cover.
18

Replacing the optical drive
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.
Prerequisites
Remove the stand.
Procedure
1 Using a plastic scribe, push the optical-drive bracket down and then push it
outward.
19

2 Pull the optical-drive assembly out of the optical-drive bay.
1 optical-drive assembly 2 optical-drive bracket
3 plastic scribe
3 Carefully pull the optical-drive bezel and remove it from the optical drive.
4 Remove the screws that secure the optical-drive bracket to the optical drive.
20