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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 - 09
Rev. A00
Contents
Before working inside your computer.....................................9
Before you begin ...............................................................................................9
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 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.
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.
9
WARNING: Before working inside your computer, read the safety
information that shipped with your computer. For more safety best
practices, see the Regulatory Compliance home page at
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:
•Philips screwdriver
10
•Flat-head screwdriver
•Plastic scribe
11
After working inside your
computer
CAUTION: Leaving stray or loose screws inside your computer may
severely damage your computer.
1 Replace all screws and 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.
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
1drive cage2processor fan
3power-supply unit4graphics card
5chassis fan
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
1 Place the computer on its side with the vents facing up.
2 Remove the screws that secure the computer cover to the chassis.
3 Release the computer cover by sliding it toward the back of the
computer.
4 Lift the computer cover away from the chassis.
1computer cover2screws (2)
3chassis
15
Replacing the computer 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
1 Align the tabs on the computer cover with the slots on the chassis and
slide it toward the front of the computer.
2 Replace the screws that secure the computer cover to the chassis.
3 Place the computer in an upright position.
16
Removing the front bezel
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 computer cover.
Procedure
1 Place the computer in an upright position.
2 Release the front-bezel tabs by moving them outward.
17
3 Gently rotate and pull the front bezel away from the chassis.
18
1tabs (6)2chassis
3slots (3)4front bezel
Replacing the front bezel
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
1 Align and insert the tabs on the front bezel into the slots on the front
panel.
2 Rotate the front bezel toward the chassis until the front-bezel tabs snap
into place.
3 Place on the computer on its side.
Post-requisites
Replace the computer cover.
19
Removing the 3.5-inch hard
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
1 Remove the computer cover.
2 Remove the front bezel.
Procedure
1 Disconnect the power cable and the data cable from the hard drive.
20
2 Remove the screw that secures the hard-drive assembly to the drive
3 Using the pull-tab, slide the hard-drive assembly toward the inside of the
computer and lift it off the drive cage.
1hard-drive assembly2pull-tab
4 Turn the hard-drive assembly over.
5 Remove the screws that secure the hard-drive bracket to the hard-drive
assembly.
22
6 Slide the hard drive out of the hard-drive bracket.
1screws (2)2hard drive
3hard-drive bracket
23
Replacing the 3.5-inch hard
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.
Procedure
1 Slide the hard drive into the hard-drive bracket.
2 Align the screw holes on the hard drive with the screw holes on the hard-
drive bracket.
3 Replace the screws that secure the hard-drive bracket to the hard drive.
4 Turn over the hard-drive assembly.
5 Slide and place the hard-drive assembly into the drive cage.
6 Replace the screws that secure the hard-drive assembly to the drive
cage.
7 Connect the power cable and data cable to the hard-drive assembly.
Post-requisites
1 Replace the front bezel.
2 Replace the computer cover.
24
Removing the 2.5-inch hard
drives
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 computer cover.
25
Procedure
1 Disconnect the power cable and the data cable from the hard drive.
NOTE: Disconnect the cables from the second hard drive, if
installed.
1hard-drive assembly2data cable
3power cable
2 Remove the screw that secures the hard-drive bracket to the drive cage.
26
3 Slide and lift the hard-drive assembly off the drive cage.
1hard-drive assembly2screw
3drive cage
4 Remove the screws that secure the hard drive to the hard-drive bracket.
27
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