Dell M140 Manual do Utilizador descarregar pdf (Página 2)

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 Before You Begin

Dell™XPSM140ServiceManual

Preparing to Work Inside the Computer

Recommended Tools

Computer Orientation

Screw Identification

Preparing to Work Inside the Computer

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

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

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3. Turn off the computer and all attached devices.

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4. Disconnect the computer from the electrical outlet.

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5. Disconnect all attached devices.

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6. Disconnect all external cables from the computer.

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7. Close the display and turn the computer upside down on a flat work surface.

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8. Slide and hold the battery bay latch release on the bottom of the computer, then pull the battery out of the battery bay.

CAUTION: Before you perform any of the procedures in this section, follow the safety instructions in the Product Information Guide.

NOTICE: 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 electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such as the

back panel) on the computer.

NOTICE: Handle components and cards with care. Do not touch the components or contacts on a card. Instead, hold a card by its edges or by its metal

mounting bracket. Hold a component such as a microprocessor by its edges, not by its pins.

NOTICE: When disconnecting a cable, pull on the cable's connector or on its strain-relief loop, not on the cable itself. Some cables have connectors with

locking tabs; before disconnecting this type of cable, press inward on the locking tabs to release the connector. When connecting or disconnecting a cable,

ensure that the connectors are correctly oriented and aligned to avoid damage to the connector and/or the connector's pins.

NOTICE: To avoid damaging the computer, always perform the following steps before you begin working inside the computer.

NOTE: Ensure that the computer is off and not in a power management mode. If you cannot shut down the computer using the operating system, press and hold

the power button for 4 seconds.

NOTICE: To avoid damaging the system board, wait 10 to 20 seconds before disconnecting any attached devices.

NOTICE: To avoid damaging the system board, you must remove the main battery before servicing the computer.