Dell P28F001 User Manual
Dell Inspiron 3521/5521
Owner’s Manual
Computer model: Inspiron 3521/5521
Regulatory model: P28F
Regulatory type: P28F001
Notes, Cautions, and Warnings
NOTE: A NOTE indicates important information that helps you make better
use of your computer.
CAUTION: A CAUTION indicates potential damage to hardware or loss of
data if instructions are not followed.
WARNING: A WARNING indicates a potential for property damage,
personal injury, or death.
____________________
© 2012 Dell Inc.
™
Trademarks used in this text: Dell™, the DELL logo, and Inspiron
Microsoft
trademarks of Microsoft Corporation in the United States and/or other countries; Bluetooth
is a registered trademark owned by Bluetooth SIG, Inc. and is used by Dell under license.
2012 - 11 Rev. A00
®
, Windows®, and the Windows start button logo are either trademarks or registered
are trademarks of Dell Inc.;
®
Contents
1 Before You Begin . . . . . . . . . . . . . . . . . . . . . . . . 7
Turn Off Your Computer and Connected Devices . . . 7
Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . 7
Recommended Tools. . . . . . . . . . . . . . . . . . . . . . 8
2 After Working Inside Your Computer. . . . . . . . 9
3 Removing the Battery . . . . . . . . . . . . . . . . . . . 11
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4 Replacing the Battery . . . . . . . . . . . . . . . . . . . 13
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Postrequisites . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5 Removing the Memory Module(s) . . . . . . . . . 15
Prerequisites. . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
6 Replacing the Memory Module(s). . . . . . . . . . 17
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Postrequisites . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7 Removing the Optical-Drive Assembly . . . . . 19
Prerequisites. . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
8 Replacing the Optical-Drive Assembly . . . . . 21
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Postrequisites . . . . . . . . . . . . . . . . . . . . . . . . . . 21
9 Removing the Hard-Drive Assembly . . . . . . . 23
Prerequisites. . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
10 Replacing the Hard-Drive Assembly. . . . . . . . 25
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Postrequisites . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Contents | 3
11 Removing the Keyboard . . . . . . . . . . . . . . . . . 27
Prerequisites . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
12 Replacing the Keyboard . . . . . . . . . . . . . . . . . 29
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Postrequisites . . . . . . . . . . . . . . . . . . . . . . . . . . 29
13 Removing the Palm-Rest. . . . . . . . . . . . . . . . . 31
Prerequisites . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
14 Replacing the Palm-Rest . . . . . . . . . . . . . . . . . 35
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Postrequisites . . . . . . . . . . . . . . . . . . . . . . . . . . 35
15 Removing the Wireless Mini-Card . . . . . . . . . 37
Prerequisites . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
16 Replacing the Wireless Mini-Card . . . . . . . . . 39
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Postrequisites . . . . . . . . . . . . . . . . . . . . . . . . . . 40
17 Removing the I/O Board . . . . . . . . . . . . . . . . . 41
Prerequisites . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
18 Replacing the I/O Board . . . . . . . . . . . . . . . . . 43
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Postrequisites . . . . . . . . . . . . . . . . . . . . . . . . . . 43
19 Removing the System Board . . . . . . . . . . . . . . 45
Prerequisites . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
20 Replacing the System Board . . . . . . . . . . . . . . 49
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Postrequisites . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Entering the Service Tag in system setup . . . . . . . . 49
4 | Contents
21 Removing the Coin-Cell Battery. . . . . . . . . . . 51
Prerequisites . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
22 Replacing the Coin-Cell Battery . . . . . . . . . . . 53
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Postrequisites . . . . . . . . . . . . . . . . . . . . . . . . . . 53
23 Removing the Heat-Sink . . . . . . . . . . . . . . . . . 55
Prerequisites . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
24 Replacing the Heat-Sink . . . . . . . . . . . . . . . . . 57
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Postrequisites . . . . . . . . . . . . . . . . . . . . . . . . . . 57
25 Removing the Fan . . . . . . . . . . . . . . . . . . . . . . 59
Prerequisites . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
26 Replacing the Fan. . . . . . . . . . . . . . . . . . . . . . . 61
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Postrequisites . . . . . . . . . . . . . . . . . . . . . . . . . . 61
27 Removing the Speakers . . . . . . . . . . . . . . . . . . 63
Prerequisites . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
28 Replacing the Speakers . . . . . . . . . . . . . . . . . . 67
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Postrequisites . . . . . . . . . . . . . . . . . . . . . . . . . . 67
29 Removing the Display Assembly . . . . . . . . . . . 69
Prerequisites . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
30 Replacing the Display Assembly . . . . . . . . . . . 73
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Postrequisites . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Contents | 5
31 Removing the Display Bezel . . . . . . . . . . . . . . 75
Prerequisites . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
32 Replacing the Display Bezel . . . . . . . . . . . . . . 77
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Postrequisites . . . . . . . . . . . . . . . . . . . . . . . . . . 77
33 Removing the Display Hinges . . . . . . . . . . . . . 79
Prerequisites . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
34 Replacing the Display Hinges . . . . . . . . . . . . . 81
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Postrequisites . . . . . . . . . . . . . . . . . . . . . . . . . . 81
35 Removing the Display Panel . . . . . . . . . . . . . . 83
Prerequisites . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
36 Replacing the Display Panel . . . . . . . . . . . . . . 87
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Postrequisites . . . . . . . . . . . . . . . . . . . . . . . . . . 87
37 Removing the Camera Module . . . . . . . . . . . . 89
Prerequisites . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
38 Replacing the Camera Module . . . . . . . . . . . . 91
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Postrequisites . . . . . . . . . . . . . . . . . . . . . . . . . . 91
39 Flashing the BIOS . . . . . . . . . . . . . . . . . . . . . . . 93
6 | Contents
Before You Begin
Turn Off Your Computer and Connected Devices
CAUTION: To avoid losing data, save and close all open files and exit all open
programs before you turn off your computer.
1 Save and close all open files and exit all open programs.
2 Follow the instructions to shut down your computer based on the operating system
installed on 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 Settings→ Power→ Shutdown.
• Windows 7:
Click Start and click Shut down.
Microsoft Windows shuts down and then the computer turns off.
NOTE: If you are using a different operating system, see the documentation
3 Disconnect your computer and all attached devices from their electrical outlets.
4 Disconnect all telephone cables, network cables, and attached devices from your
computer.
5 Press and hold the power button for 5 seconds, after the computer is unplugged, to
ground the system board.
of your operating system for shut-down instructions.
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 additional safety best practices
information, see the Regulatory Compliance Homepage 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, 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.
Before You Begin | 7
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.
disconnecting cables, keep them evenly aligned to avoid bending any
When
connector pins. When connecting cables, ensure that the connectors and ports
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:
• Phillips screwdriver
• Plastic scribe
8 | Before You Begin
After Working Inside Your Computer
After you complete the replacement procedures, ensure the following:
• Replace all screws and ensure that no stray screws remain inside your computer.
• Connect any external devices, cables, cards, and any other part(s) you removed
before working on your computer.
• Connect your computer and all attached devices to their electrical outlets.
CAUTION: Before turning on your computer, replace all screws and ensure
that no stray screws remain inside the computer. Failure to do so may damage
your computer.
After Working Inside Your Computer | 9
10 | After Working Inside Your Computer
Removing the Battery
2
1
WARNING: Before working inside your computer, read the safety information
that shipped with your computer and follow the steps in "Before You Begin" on
page 7. After working inside your computer, follow the instructions in "After
Working Inside Your Computer" on page 9. For additional safety best practices
information, see the Regulatory Compliance Homepage at
dell.com/regulatory_compliance.
Procedure
1 Close the display and turn the computer over.
2 Slide the battery latches on each end of the battery bay to the unlock position. You
will hear a click when the battery is unlocked.
3 Lift and remove the battery off the computer base to disconnect it from
the computer.
1 battery latches (2) 2 battery
Removing the Battery | 11
12 | Removing the Battery
Replacing the Battery
WARNING: Before working inside your computer, read the safety information
that shipped with your computer and follow the steps in "Before You Begin" on
page 7. After working inside your computer, follow the instructions in "After
Working Inside Your Computer" on page 9. For additional safety best practices
information, see the Regulatory Compliance Homepage at
dell.com/regulatory_compliance.
Procedure
Align the tabs on the battery with the slots on the battery bay and snap the battery into
place.
Postrequisites
1 Follow the instructions in "After Working Inside Your Computer" on page 9.
Replacing the Battery | 13
14 | Replacing the Battery
Removing the Memory Module(s)
2
1
WARNING: Before working inside your computer, read the safety information
that shipped with your computer and follow the steps in "Before You Begin" on
page 7. After working inside your computer, follow the instructions in "After
Working Inside Your Computer" on page 9. For additional safety best practices
information, see the Regulatory Compliance Homepage at
dell.com/regulatory_compliance.
Prerequisites
1 Remove the battery. See "Removing the Battery" on page 11.
Procedure
1 Loosen the captive screw that secures the memory-module cover to
the computer base.
2 Using your fingertips, lift the memory-module cover out of the slots on the
computer base.
1 captive screw 2 memory-module cover
Removing the Memory Module(s) | 15
3 Use your fingertips to carefully spread apart the securing clips on each end of the
1
3
2
memory-module connector until the memory module pops up.
4 Remove the memory module from the memory-module connector.
1 securing clips (2) 2 memory-module connector
3memory module
16 | Removing the Memory Module(s)
Replacing the Memory Module(s)
WARNING: Before working inside your computer, read the safety information
that shipped with your computer and follow the steps in "Before You Begin" on
page 7. After working inside your computer, follow the instructions in "After
Working Inside Your Computer" on page 9. For additional safety best practices
information, see the Regulatory Compliance Homepage at
dell.com/regulatory_compliance.
Procedure
1 Align the notch on the memory module with the tab on the
memory-module connector.
2 Slide the memory module firmly into the connector at a 45-degree angle
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.
3 Slide the tabs on the memory-module cover into the slots on the computer base
and snap the memory-module cover into place.
4 Tighten the captive screw that secures the memory-module cover to
the computer base.
Postrequisites
1 Replace the battery. See "Replacing the Battery" on page 13.
2 Follow the instructions in "After Working Inside Your Computer" on page 9.
Replacing the Memory Module(s) | 17
18 | Replacing the Memory Module(s)
Removing the Optical-Drive Assembly
1
2
WARNING: Before working inside your computer, read the safety information
that shipped with your computer and follow the steps in "Before You Begin" on
page 7. After working inside your computer, follow the instructions in "After
Working Inside Your Computer" on page 9. For additional safety best practices
information, see the Regulatory Compliance Homepage at
dell.com/regulatory_compliance.
Prerequisites
1 Remove the battery. See "Removing the Battery" on page 11.
Procedure
1 Remove the screw that secures the optical-drive assembly to the computer base.
2 Using your fingertips, slide the optical-drive assembly out of the optical-drive bay.
1 optical-drive assembly 2 screw
Removing the Optical-Drive Assembly | 19
3 Remove the screws that secure the optical-drive bracket to
3
1
2
4
the optical-drive assembly.
4 Remove the optical-drive bracket from the optical-drive assembly.
5 Carefully pry the optical-drive bezel and remove it from the optical-drive assembly.
1 optical-drive bezel 2 optical drive
3 screws (2) 4 optical-drive bracket
20 | Removing the Optical-Drive Assembly
Replacing the Optical-Drive Assembly
WARNING: Before working inside your computer, read the safety information
that shipped with your computer and follow the steps in "Before You Begin" on
page 7. After working inside your computer, follow the instructions in "After
Working Inside Your Computer" on page 9. For additional safety best practices
information, see the Regulatory Compliance Homepage at
dell.com/regulatory_compliance.
Procedure
1 Align the tabs on the optical-drive bezel with the slots on the optical drive and snap
optical-drive bezel into place.
2 Align the screw holes on the optical-drive bracket with the screw holes on
the optical-drive assembly.
3 Replace the screws that secure the optical-drive bracket to the
optical-drive assembly.
4 Slide the optical-drive assembly into position and ensure that the screw hole on the
optical-drive bracket aligns with the screw hole on computer base.
Postrequisites
1 Replace the battery. See "Replacing the Battery" on page 13.
2 Follow the instructions in "After Working Inside Your Computer" on page 9.
Replacing the Optical-Drive Assembly | 21
22 | Replacing the Optical-Drive Assembly
Removing the Hard-Drive Assembly
1
2
WARNING: Before working inside your computer, read the safety information
that shipped with your computer and follow the steps in "Before You Begin" on
page 7. After working inside your computer, follow the instructions in "After
Working Inside Your Computer" on page 9. For additional safety best practices
information, see the Regulatory Compliance Homepage at
dell.com/regulatory_compliance.
CAUTION: To avoid data loss, do not remove the hard drive while the computer is
in Sleep or On state.
CAUTION: Hard drives are extremely fragile. Exercise care when handling the
hard drive.
Prerequisites
1 Remove the battery. See "Removing the Battery" on page 11.
2 Follow the instructions from step 1 to step 2 in "Removing the Memory Module(s)"
on page 15.
Procedure
1 Remove the screws that secure the hard-drive assembly to the computer base.
2 Slide the hard-drive assembly forward to disconnect the hard-drive assembly from
the system board.
1screws (2) 2 hard-drive assembly
Removing the Hard-Drive Assembly | 23
3 Using the pull-tab, lift the hard-drive assembly out of the computer base.
2
1
2
1
1 hard-drive assembly 2 pull-tab
4 Remove the screws that secure the hard-drive bracket to the hard drive.
5 Lift the hard-drive bracket off the hard drive.
1 screws (2) 2 hard-drive bracket
24 | Removing the Hard-Drive Assembly
Replacing the Hard-Drive Assembly
WARNING: Before working inside your computer, read the safety information
that shipped with your computer and follow the steps in "Before You Begin" on
page 7. After working inside your computer, follow the instructions in "After
Working Inside Your Computer" on page 9. For additional safety best practices
information, see the Regulatory Compliance Homepage at
dell.com/regulatory_compliance.
CAUTION: Hard drives are extremely fragile. Exercise care when handling the
hard drive.
Procedure
1 Align the screw holes on the hard-drive bracket with the screw holes on
the hard drive.
2 Replace the screws that secure the hard-drive bracket to the hard drive.
3 Slide and place the hard-drive assembly in the hard-drive bay.
4 Slide the hard-drive assembly backward to connect the hard-drive assembly to the
system board.
5 Replace the screws that secure the hard-drive assembly to the computer base.
Postrequisites
1 Follow the instructions from step 3 to step 4 in "Replacing the Memory Module(s)"
on page 17.
2 Replace the battery. See "Replacing the Battery" on page 13.
3 Follow the instructions in "After Working Inside Your Computer" on page 9.
Replacing the Hard-Drive Assembly | 25
26 | Replacing the Hard-Drive Assembly
Removing the Keyboard
1
2
3
WARNING: Before working inside your computer, read the safety information
that shipped with your computer and follow the steps in "Before You Begin" on
page 7. After working inside your computer, follow the instructions in "After
Working Inside Your Computer" on page 9. For additional safety best practices
information, see the Regulatory Compliance Homepage at
dell.com/regulatory_compliance.
Prerequisites
1 Remove the battery. See "Removing the Battery" on page 11.
Procedure
1 Turn the computer over and open the display as far as possible.
2 Using a plastic scribe, release the keyboard from the tabs on the
palm-rest assembly.
1 plastic scribe 2 tabs (9)
3keyboard
Removing the Keyboard | 27
3 Lift and slide the keyboard towards the display to release the keyboard from the
1
2
3
palm-rest assembly.
4 Turn the keyboard over and place it on the palm-rest assembly.
5 Lift the connector latch and disconnect the keyboard from the connector on the
system board.
6 Lift the keyboard off the palm-rest assembly.
1 connector latch 2 keyboard cable
3keyboard
28 | Removing the Keyboard
Replacing the Keyboard
WARNING: Before working inside your computer, read the safety information
that shipped with your computer and follow the steps in "Before You Begin" on
page 7. After working inside your computer, follow the instructions in "After
Working Inside Your Computer" on page 9. For additional safety best practices
information, see the Regulatory Compliance Homepage at
dell.com/regulatory_compliance.
Procedure
1 Slide the keyboard cable into the connector on the system board and press down
on the connector latch to secure it.
2 Slide the tabs at the bottom of the keyboard into the slots on the
palm-rest assembly and place the keyboard on the palm-rest assembly.
3 Gently press around the edges of the keyboard to secure the keyboard under the
tabs on the palm-rest assembly.
Postrequisites
1 Replace the battery. See "Replacing the Battery" on page 13.
2 Follow the instructions in "After Working Inside Your Computer" on page 9.
Replacing the Keyboard | 29
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