Dell Latitude D531 User Manual

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Contents

110 Before You BeginThe computer turns off after the operating system shutdown process is complete.2 Ensure that the computer and all attached devices are turned off. If your computer and attacheddevices did not automatically turn off when you shut down your operating system, press and hold thepower button for about 4 seconds to turn them off.Before Working Inside Your ComputerUse the following safety guidelines to help protect your computer from potential damage and to help toensure your own personal safety.CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the ProductInformation Guide.NOTICE: Handle components and cards with care. Do not touch the components or contacts on a card. Hold acard by its edges or by its metal mounting bracket. Hold a component such as a processor by its edges, not by itspins.NOTICE: Only a certified service technician should perform repairs on your computer. Damage due to servicingthat is not authorized by Dell is not covered by your warranty.NOTICE: When you disconnect a cable, pull on its connector or on its pull-tab, not on the cable itself. Some cableshave connectors with locking tabs; if you are disconnecting this type of cable, press in on the locking tabs beforeyou disconnect the cable. As you pull connectors apart, keep them evenly aligned to avoid bending any connectorpins. Also, before you connect a cable, ensure that both connectors are correctly oriented and aligned.NOTICE: To avoid damaging the computer, perform the following steps before you begin working inside thecomputer.1 Ensure that the work surface is flat and clean to prevent the computer cover from being scratched.2 Turn off your computer (see "Turning Off Your Computer" on page 109).3 If the computer is connected to a docking device (docked), undock it. See the documentation thatcame with your docking device for instructions.NOTICE: To disconnect a network cable, first unplug the cable from your computer and then unplug the cable fromthe network device.4 Disconnect all telephone or network cables from the computer.5 Close the display and turn the computer upside-down on a flat work surface.NOTICE: To avoid damaging the system board, you must remove the main battery before you service thecomputer.6 Disconnect your computer and all attached devices from their electrical outlets.