Dell Alienware Aurora R12 R12-4854 — essential Safety Guidelines for Working Inside Your Computer [6/108]

Working inside your computer

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 you have read the safety information that shipped with your

computer.

WARNING: Before working inside your computer, read the safety information that is shipped with your computer. For

more safety best practices, see the Regulatory Compliance home page at www.dell.com/regulatory_compliance.

WARNING: Disconnect your computer from 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 your computer to an electrical

outlet.

CAUTION: To avoid damaging the computer, ensure that the work surface is flat, dry, and clean.

CAUTION: To avoid damaging the components and cards, handle them by their edges, and avoid touching the pins and the

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 is 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 it by its connector or its pull tab, not the cable itself. Some cables have

connectors with locking tabs or thumbscrews that you must disengage before disconnecting the cable. When disconnecting

cables, keep them evenly aligned to avoid bending the connector pins. When connecting cables, ensure that the ports and

the connectors are correctly oriented and aligned.

CAUTION: Press and eject any installed card from the media-card reader.

CAUTION: Exercise caution when handling Lithium-ion batteries in laptops. Swollen batteries should not be used and

should be replaced and disposed properly.

NOTE: The color of your computer and certain components may appear differently than shown in this document.

Before working inside your computer

NOTE: The images in this document may differ from your computer depending on the configuration you ordered.

Before you begin

Steps

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

2. Shut down your computer. Click Start > Power > 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 attached network devices and peripherals, such as keyboard, mouse, and monitor from your computer.