Dell Inspiron 15-5551 User manual

Inspiron 15
5000 Series
Service Manual
Computer Model: Inspiron 15–5551
Regulatory Model: P51F
Regulatory Type: P51F003

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 - 03
Rev. A00

Contents
Before working inside your computer.................................. 10
Before you begin .............................................................................................10
Safety instructions............................................................................................10
Recommended tools........................................................................................11
After working inside your computer......................................13
Removing the battery............................................................... 14
Procedure.........................................................................................................14
Replacing the battery................................................................15
Procedure.........................................................................................................15
Removing the optical drive......................................................16
Prerequisites.....................................................................................................16
Procedure.........................................................................................................16
Replacing the optical drive......................................................19
Procedure.........................................................................................................19
Post-requisites................................................................................................. 19
Removing the base cover........................................................ 20
Prerequisites.................................................................................................... 20
Procedure........................................................................................................ 20
Replacing the base cover......................................................... 21
Procedure.........................................................................................................21
Post-requisites................................................................................................. 21
3

Removing the memory modules............................................ 22
Prerequisites.....................................................................................................22
Procedure.........................................................................................................22
Replacing the memory modules............................................ 24
Procedure........................................................................................................ 24
Post-requisites................................................................................................. 25
Removing the hard drive..........................................................26
Prerequisites.....................................................................................................26
Procedure........................................................................................................ 26
Replacing the hard drive..........................................................30
Procedure........................................................................................................ 30
Post-requisites.................................................................................................30
Removing the wireless card.....................................................31
Prerequisites..................................................................................................... 31
Procedure.........................................................................................................31
Replacing the wireless card.....................................................33
Procedure.........................................................................................................33
Post-requisites................................................................................................. 33
Removing the coin-cell battery..............................................34
Prerequisites.....................................................................................................34
Procedure........................................................................................................ 34
Replacing the coin-cell battery.............................................. 36
Procedure........................................................................................................ 36
Post-requisites.................................................................................................36
4

Removing the keyboard........................................................... 37
Prerequisites.....................................................................................................37
Procedure.........................................................................................................37
Replacing the keyboard...........................................................40
Procedure........................................................................................................ 40
Post-requisites.................................................................................................40
Removing the computer base.................................................41
Prerequisites.....................................................................................................41
Procedure.........................................................................................................41
Replacing the computer base.................................................46
Procedure........................................................................................................ 46
Post-requisites.................................................................................................46
Removing the optical-drive interposer.................................47
Prerequisites.....................................................................................................47
Procedure.........................................................................................................47
Replacing the optical-drive interposer.................................49
Procedure........................................................................................................ 49
Post-requisites.................................................................................................49
Removing the speakers............................................................50
Prerequisites.................................................................................................... 50
Procedure........................................................................................................ 50
Replacing the speakers.............................................................52
Procedure.........................................................................................................52
Post-requisites................................................................................................. 52
5

Removing the I/O board.......................................................... 53
Prerequisites.....................................................................................................53
Procedure.........................................................................................................53
Replacing the I/O board...........................................................55
Procedure.........................................................................................................55
Post-requisites................................................................................................. 55
Removing the heat-sink assembly......................................... 56
Prerequisites.....................................................................................................56
Procedure........................................................................................................ 56
Replacing the heat-sink assembly......................................... 58
Procedure........................................................................................................ 58
Post-requisites.................................................................................................58
Removing the power-button module...................................60
Prerequisites.................................................................................................... 60
Procedure........................................................................................................ 60
Replacing the power-button module................................... 63
Procedure........................................................................................................ 63
Post-requisites.................................................................................................63
Removing the system board................................................... 64
Prerequisites.................................................................................................... 64
Procedure........................................................................................................ 64
Replacing the system board....................................................69
Procedure........................................................................................................ 69
Post-requisites.................................................................................................69
6

Removing the display assembly..............................................71
Prerequisites..................................................................................................... 71
Procedure......................................................................................................... 71
Replacing the display assembly..............................................74
Procedure.........................................................................................................74
Post-requisites................................................................................................. 74
Removing the display bezel.....................................................75
Prerequisites.....................................................................................................75
Procedure.........................................................................................................75
Replacing the display bezel..................................................... 77
Procedure.........................................................................................................77
Post-requisites................................................................................................. 77
Removing the display panel.................................................... 78
Prerequisites.....................................................................................................78
Procedure.........................................................................................................78
Replacing the display panel.....................................................81
Procedure.........................................................................................................81
Post-requisites................................................................................................. 81
Removing the display hinges.................................................. 82
Prerequisites.................................................................................................... 82
Procedure........................................................................................................ 82
Replacing the display hinges.................................................. 84
Procedure........................................................................................................ 84
Post-requisites.................................................................................................84
7

Removing the display cable.................................................... 85
Prerequisites.....................................................................................................85
Procedure........................................................................................................ 85
Replacing the display cable.....................................................87
Procedure.........................................................................................................87
Post-requisites................................................................................................. 87
Removing the display back-cover and antenna
assembly..................................................................................... 88
Prerequisites.................................................................................................... 88
Procedure........................................................................................................ 88
Replacing the display back-cover and antenna
assembly..................................................................................... 90
Procedure........................................................................................................ 90
Post-requisites.................................................................................................90
Removing the camera...............................................................91
Prerequisites.....................................................................................................91
Procedure.........................................................................................................91
Replacing the camera...............................................................93
Procedure........................................................................................................ 93
Post-requisites.................................................................................................93
Removing the power-adapter port........................................94
Prerequisites.................................................................................................... 94
Procedure........................................................................................................ 94
Replacing the power-adapter port........................................96
Procedure........................................................................................................ 96
Post-requisites.................................................................................................96
8

Removing the palm-rest assembly.........................................97
Prerequisites.....................................................................................................97
Procedure.........................................................................................................97
Replacing the palm-rest assembly.........................................99
Procedure........................................................................................................ 99
Post-requisites.................................................................................................99
Flashing the BIOS.................................................................... 100
9

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 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.
Safety instructions
Use the following safety guidelines to protect your computer from potential
damage and ensure your personal safety.
10

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, 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 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: 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:
11

• Philips screwdriver
• Plastic scribe
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, 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.
13

Removing the battery
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 Close the display and turn the computer over.
2 Slide the battery latch to the unlocked position.
3 Using your fingertips, lift the battery at an angle and remove the battery
off the computer base.
1 battery 2 battery latch
3 computer base
4 Turn the computer over, open the display, and press the power button
for five seconds to ground the computer.
14

Replacing the battery
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
Slide the tabs on the battery into the slots on the battery bay and snap the
battery into place.
15

Removing 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 dell.com/regulatory_compliance.
Prerequisites
Remove the battery.
Procedure
1 Remove the screw that secures the optical-drive assembly to the
computer base.
2 Using a plastic scribe, push the optical drive through the slot to release
the optical-drive assembly out of the optical-drive bay.
16

3 Slide the optical-drive assembly out of the optical-drive bay.
1 optical-drive assembly 2 optical-drive slot
3 plastic scribe 4 screw
4 Carefully pull the optical-drive bezel and remove it from the optical drive.
17

5 Remove the screws that secure the optical-drive bracket to the optical
drive and remove the optical-drive bracket.
1 optical-drive bezel 2 optical drive
3 optical-drive bracket 4 screws (2)
5 tab
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 dell.com/regulatory_compliance.
Procedure
1 Align the screw holes on the optical-drive bracket with the screw holes
on the optical drive.
2 Replace the screws that secure the optical-drive bracket to the optical
drive.
3 Align the tabs on the optical-drive bezel with the slots on the optical
drive and snap the optical-drive bezel into place.
4 Slide the optical-drive assembly into the optical-drive bay and align the
screw hole on the optical-drive bracket with the screw hole on the
computer base.
5 Replace the screw that secures the optical-drive assembly to the
computer base.
Post-requisites
Replace the battery.
19

Removing the base 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
Remove the battery.
Procedure
1 Close the display and turn the computer over.
2 Remove the screws that secure the base cover to the computer base.
3 Using your fingertips, pry the base cover starting at the top edge out of
the computer base.
4 Lift the base cover off the computer base.
1 screws (2) 2 base cover
20