Dell Inspiron 5457 User Manual

Inspiron 14

5000 Series

Owner's Manual

Computer Model: Inspiron 14–5457

Regulatory Model: P49G

Regulatory Type: P49G003

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..............................................................................................	9
Recommended tools.......................................................................................	10
After working inside your computer......................................	12
Removing the base cover.........................................................	13
Procedure.........................................................................................................	13
Replacing the base cover.........................................................	15
Procedure.........................................................................................................	15
Removing the battery...............................................................	16
Prerequisites.....................................................................................................	16
Procedure.........................................................................................................	16
Replacing the battery................................................................	17
Procedure.........................................................................................................	17
Post-requisites..................................................................................................	17
Removing the hard drive..........................................................	18
Prerequisites.....................................................................................................	18
Procedure.........................................................................................................	18
Replacing the hard drive..........................................................	21
Procedure.........................................................................................................	21
Post-requisites.................................................................................................	21

Removing the wireless card....................................................	22
Prerequisites.....................................................................................................	22
Procedure.........................................................................................................	22
Replacing the wireless card.....................................................	24
Procedure........................................................................................................	24
Post-requisites.................................................................................................	25
Removing the memory modules............................................	26
Prerequisites.....................................................................................................	26
Procedure........................................................................................................	26
Replacing the memory modules............................................	28
Procedure........................................................................................................	28
Post-requisites.................................................................................................	29
Removing the fan......................................................................	30
Prerequisites....................................................................................................	30
Procedure........................................................................................................	30
Replacing the fan.......................................................................	33
Procedure.........................................................................................................	33
Post-requisites.................................................................................................	33
Removing the keyboard...........................................................	34
Prerequisites.....................................................................................................	34
Procedure........................................................................................................	34
Replacing the keyboard...........................................................	37
Procedure.........................................................................................................	37
Post-requisites.................................................................................................	37
Folding the Keyboard Cables..........................................................................	37

Removing the base frame........................................................	41
Prerequisites.....................................................................................................	41
Procedure........................................................................................................	42
Replacing the base frame........................................................	45
Procedure........................................................................................................	45
Post-requisites.................................................................................................	45
Removing the heat sink............................................................	46
Prerequisites....................................................................................................	46
Procedure........................................................................................................	46
Replacing the heat sink............................................................	48
Procedure........................................................................................................	48
Post-requisites.................................................................................................	48
Removing the coin-cell battery..............................................	49
Prerequisites....................................................................................................	49
Procedure........................................................................................................	49
Replacing the coin-cell battery..............................................	51
Procedure.........................................................................................................	51
Post-requisites.................................................................................................	51
Removing the speakers............................................................	52
Prerequisites.....................................................................................................	52
Procedure.........................................................................................................	52
Replacing the speakers............................................................	54
Procedure........................................................................................................	54
Post-requisites.................................................................................................	54

Removing the I/O board..........................................................	55
Prerequisites.....................................................................................................	55
Procedure.........................................................................................................	55
Replacing the I/O board...........................................................	57
Procedure.........................................................................................................	57
Post-requisites.................................................................................................	57
Removing the status-light board...........................................	58
Prerequisites.....................................................................................................	58
Procedure........................................................................................................	58
Replacing the status-light board............................................	62
Procedure........................................................................................................	62
Post-requisites.................................................................................................	62
Removing the system board....................................................	63
Prerequisites.....................................................................................................	63
Procedure........................................................................................................	63
Replacing the system board....................................................	68
Procedure........................................................................................................	68
Post-requisites.................................................................................................	68
Removing the display assembly..............................................	70
Prerequisites.....................................................................................................	70
Procedure.........................................................................................................	71
Replacing the display assembly..............................................	73
Procedure.........................................................................................................	73
Post-requisites.................................................................................................	74

Removing the hinge covers.....................................................	75
Prerequisites.....................................................................................................	75
Procedure.........................................................................................................	75
Replacing the hinge covers.....................................................	77
Procedure.........................................................................................................	77
Post-requisites.................................................................................................	77
Removing the antenna board.................................................	78
Prerequisites.....................................................................................................	78
Procedure.........................................................................................................	78
Replacing the antenna board.................................................	80
Procedure........................................................................................................	80
Post-requisites.................................................................................................	80
Removing the display bezel.....................................................	81
Prerequisites.....................................................................................................	81
Procedure........................................................................................................	82
Replacing the display bezel.....................................................	84
Procedure........................................................................................................	84
Post-requisites.................................................................................................	84
Removing the display panel....................................................	85
Prerequisites.....................................................................................................	85
Procedure........................................................................................................	85
Replacing the display panel....................................................	88
Procedure........................................................................................................	88
Post-requisites.................................................................................................	88

Removing the display hinges..................................................	89
Prerequisites....................................................................................................	89
Procedure........................................................................................................	89
Replacing the display hinges...................................................	91
Procedure.........................................................................................................	91
Post-requisites.................................................................................................	91
Removing the camera...............................................................	92
Prerequisites.....................................................................................................	92
Procedure........................................................................................................	92
Replacing the camera...............................................................	94
Procedure........................................................................................................	94
Post-requisites.................................................................................................	94
Removing the power-adapter port........................................	95
Prerequisites.....................................................................................................	95
Procedure........................................................................................................	95
Replacing the power-adapter port........................................	99
Procedure........................................................................................................	99
Post-requisites.................................................................................................	99
Removing the palm rest.........................................................	101
Prerequisites...................................................................................................	101
Procedure.......................................................................................................	101
Replacing the palm rest.........................................................	103
Procedure......................................................................................................	103
Post-requisites...............................................................................................	103
Flashing the BIOS....................................................................	104

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

1Save and close all open files and exit all open applications.

2Shut 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.

3Disconnect your computer and all attached devices from their electrical outlets.

4Disconnect all cables such as telephone cables, network cables and so on, from your computer.

5Disconnect all attached devices and peripherals, such as keyboard, mouse, monitor, and so on, from your computer.

6Remove any media card and optical disc from your computer, if applicable.

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.

Recommended tools

The procedures in this document may require the following tools:

•Phillips screwdriver

•Plastic scribe

After working inside your computer

CAUTION: Leaving stray or loose screws inside your computer may severely damage your computer.

1Replace all screws and ensure that no stray screws remain inside your computer.

2Connect any external devices, peripherals, and cables you removed before working on your computer.

3Replace any media cards, discs, and any other parts that you removed before working on your computer.

4Connect your computer and all attached devices to their electrical outlets.

5Turn on your computer.

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 www.dell.com/regulatory_compliance.

Procedure

1Close the display and turn the computer over.

2Remove the screws that secure the base cover to the base frame.

3Using a plastic scribe, pry the base cover out of the base frame.

4 Slide and lift the base cover off the base frame.

1	plastic scribe	2	screws (2)
3	base cover	4	tabs
5	base frame

Replacing the base cover

Procedure

1Slide the tabs on the base cover into the slots on the base frame.

2Press down on the base cover to snap it in place.

3Replace the screws that secure the base cover to the base frame.

Removing the battery

Prerequisites

Remove the base cover.

Procedure

1Remove the screws that secure the battery to the base frame.

2Lift the battery off the base frame.

1 screws (2)

2 battery

3Turn the computer over, open the display, and press the power button for five seconds to ground the system board.

Replacing the battery

Procedure

1Align the screw holes on the battery with the screw holes on the base frame and press down on the battery to connect it to the battery connector.

2Replace the screws that secure the battery to the base frame.

Post-requisites

Replace the base cover.

Removing the hard drive

CAUTION: Hard drives are fragile. Exercise care when handling the hard drive.

CAUTION: To avoid data loss, do not remove the hard drive while the computer is in sleep or on state.

Prerequisites

1Remove the base cover.

2Remove the battery.

Procedure

1Remove the screws that secure the hard-drive assembly to the base frame.

2Gently lift the hard-drive assembly out of the base frame and disconnect the hard-drive cable from the hard drive.

1 screws (3)

2 hard drive

3 hard-drive cable

3 Remove the screws that secure the hard-drive bracket to the hard drive.

4 Lift the hard-drive bracket off the hard drive.

1	screws (4)	2 hard-drive bracket
3	hard drive

Replacing the hard drive

CAUTION: Hard drives are fragile. Exercise care when handling the hard drive.

Procedure

1Place the hard-drive bracket on the hard drive.

2Align the screw holes on the hard drive-bracket with the screw holes on the hard drive.

3Replace the screws that secure the hard-drive bracket to the hard drive.

4Connect the hard-drive cable to the hard drive.

5Place the hard-drive assembly in the base frame and align the screw holes on the hard-drive assembly with the screw holes on the base frame.

6Replace the screws that secure the hard-drive assembly to the base frame.

Post-requisites

1Replace the battery.

2Replace the base cover.

Removing the wireless card

Prerequisites

1Remove the base cover.

2Remove the battery.

Procedure

1Remove the screw that secures the wireless-card bracket and the wireless card to the system board.

NOTE: The wireless-card bracket may not be available on all models.

2Lift the wireless-card bracket off the wireless card.

3Disconnect the antenna cables from the wireless card.

4 Lift and slide the wireless card out of the wireless-card slot.

1	screw	2	wireless-card bracket
3	antenna cables (2)	4	wireless card
5	wireless-card slot

Replacing the wireless card

Procedure

CAUTION: To avoid damage to the wireless card, do not place any cables under it.

1Align the notch on the wireless card with the tab on the wireless-card slot and slide the card into the slot.

2Align the screw hole on the wireless card with the screw hole on the system board.

3Connect the antenna cables to the wireless card.

The following table provides the antenna-cable color scheme for the wireless card supported by your computer.

Connectors on the wireless card	Antenna-cable color

Main (white triangle)	white
Auxiliary (black triangle)	black

4Place the wireless-card bracket on the wireless card and align the screw hole on the wireless-card bracket with the screw hole on the system board.

5Replace the screw that secures the wireless card and the wireless-card bracket to the system board.

1	wireless-card slot	2	wireless card
3	notch	4	tab
5	antenna cables (2)	6	screw
7	wireless-card bracket

Post-requisites

1Replace the battery.

2Replace the base cover.

Removing the memory modules

Prerequisites

1Remove the base cover.

2Remove the battery.

Procedure

1Use your fingertips to carefully spread apart the securing-clips on each end of the memory-module slot until the memory module pops up.

2 Slide and remove the memory module from the memory-module slot.

1	securing-clips (2)	2 memory-module slot
3	memory module

Replacing the memory modules

Procedure

1Align the notch on the memory module with the tab on the memorymodule slot.

2Slide the memory module firmly into the slot at an 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.

1 memory-module slot

2 tab

3 memory module

Post-requisites

1Replace the battery.

2Replace the base cover.

Removing the fan

Prerequisites

1Remove the base cover.

2Remove the battery.

Procedure

1Lift the latch and using the pull tab, disconnect the I/O-board cable from the system board.

2Peel off the I/O-board cable from the fan.

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