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Before working inside your computer
To avoid damaging your computer, perform the following steps before you begin working inside the computer.
1
Ensure that you follow the
2
Ensure that your work surface is flat and clean to prevent the computer cover from being scratched.
3
Turn off your computer, see
CAUTION:
To disconnect a network cable, first unplug the cable from your computer and then unplug the cable from
the network device.
4
Disconnect all the network cables from the computer.
5
Disconnect your computer and all attached devices from the electrical outlets.
6
Press and hold the power button while the computer is unplugged to ground the system board.
7
Remove the cover.
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:
Make sure that you place the cooler outlet side of your system at least 5 cm away from wall to prevent
system overheat.
CAUTION:
Your system cannot be placed crosswise and make sure that there is no equipment on the side cover.
Safety instructions
Use the following safety guidelines to protect your computer from potential damage and to ensure your personal safety. Unless otherwise
noted, each procedure included in this document assumes that the following conditions exist:
•
You have read the safety information that shipped with your computer.
•
A component can be replaced or, if purchased separately, installed by performing the removal procedure in reverse order.
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.
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 www.Dell.com/regulatory_compliance
CAUTION:
Many repairs may only be done by a certified service technician. You should only perform troubleshooting and simple
repairs as authorized in your product documentation, or as directed by the online or telephone service and support team. Damage
due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructions that came
with the product.
CAUTION:
To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an
unpainted metal surface at the same time as touching a connector on the back of the computer.
CAUTION:
Handle components and cards with care. Do not touch the components or contacts on a card. Hold a card by its
edges or by its metal mounting bracket. Hold a component such as a processor by its edges, not by its pins.
Safety
instructions.
Turning off your
computer.
Working on your computer
Working on your computer
1
3
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