Dell Latitude C640 Manuel de service télécharger pdf (Page 3)

Before You Begin: Dell Latitude C540/C640 Service Manual

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Before You Begin

Dell™ Latitude™ C540/C640 Service Manual

Preparing to Work Inside the Computer

Recommended Tools

Screw Identification

Preparing to Work Inside the Computer

CAUTION: Before working inside your computer, read the safety

instructions in your System Information Guide.

CAUTION: Only a certified service technician should perform repairs on

your computer. Damage due to servicing that is not authorized by Dell

is not covered by your warranty.

NOTICE: To avoid damaging the computer, perform the following steps before

you begin working inside the computer.

1. Ensure that the work surface is clean to prevent scratching the computer cover.

2. Save any work in progress and exit all open programs.

3. Turn off the computer and all attached devices.

NOTE: Before turning off the computer, ensure that the computer is not in a

power management mode. If you cannot shut down the computer using the

computer operating system, press and hold the power button for 4 seconds.

4. If the computer is connected (docked) to a docking device, undock it. See the

documentation that came with the docking device for instructions.

5. Disconnect the computer and any attached devices from electrical outlets.

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