Dell 2010 service manual Safety Instructions

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2Ensure that the computer and all attached devices are turned off. If your computer and attached devices did not automatically turn off when you shut down your operating system, press and hold the power button for about 4 seconds to turn them off.

Safety Instructions

Use the following safety guidelines to help protect your computer from potential damage and to help to ensure your own personal safety.

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: 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.

CAUTION: When you disconnect a cable, pull on its connector or on its pull-tab, not on the cable itself. Some cables have connectors with locking tabs; if you are disconnecting this type of cable, press in on the locking tabs before you disconnect the cable. As you pull connectors apart, keep them evenly aligned to avoid bending any connector pins. Also, before you connect a cable, ensure that both connectors are correctly oriented and aligned.

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

1Ensure that the work surface is flat and clean to prevent the computer cover from being scratched.

2Turn off your computer (see "Turning Off Your Computer" on page 11).

CAUTION: To disconnect a network cable, first unplug the cable from your computer and then unplug the cable from the network device.

3Disconnect all telephone or network cables from the computer.

4Disconnect your computer and all attached devices from their electrical outlets.

5Press and hold the power button while the system is unplugged to ground the system board.

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Before You Begin

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Contents W . d e l l . c o m s u p p o r t . d e l l . c o m July Contents PCI and PCI Express Cards Processor Fan Heat Sink Assembly Changing Boot Sequence for Technical Overview Inside View of Your ComputerSystem Board Components Cpufan DIMM1 Technical Overview Technical Specifications Recommended Tools Before You BeginTurning Off Your Computer Safety Instructions Before You Begin Before You Begin Computer Cover Removing the Computer CoverReplacing the Computer Cover Place the computer in an upright position Computer Cover Front Bezel Removing the Front BezelReplacing the Front Bezel Memory Modules Removing Memory ModulesReplacing Memory Modules Cutouts Securing clip snapped in position Memory Modules PCI and PCI Express Cards Removing PCI and PCI Express CardsScrew Card Replacing PCI and PCI Express Cards PCI and PCI Express Cards PCI and PCI Express Cards Installed Drives Removing a Hard DrivePower cable Data cable Screws Replacing a Hard Drive Removing a Media Card ReaderFlexBay USB cable Screws Replacing a Media Card Reader Break-away metal plate Removing an Optical Drive Power cable Data cable Screws Replacing an Optical Drive Drives Drives Drives Power Switch Module Removing the Power Switch ModuleHard drive activity light Replacing the Power Switch Module Power Switch Module Front I/O Panel Removing the Front I/O PanelReplacing the Front I/O Panel Front I/O Panel Front I/O Panel Processor Fan and Heat Sink Assembly Removing the Processor Fan and Heat Sink AssemblyProcessor Fan and Heat Sink Assembly Replacing the Processor Fan and Heat Sink Assembly Processor Fan and Heat Sink Assembly Processor Removing the ProcessorProcessor Release lever Socket Replacing the Processor Processor System Board Removing the System BoardLift the system board up and out Replacing the System Board System Board Power Supply Removing the Power SupplyReplacing the Power Supply Power Supply Power Supply Battery Removing the BatteryReplacing the Battery System Setup Entering System SetupOverview System Setup System Setup Options USB Controller-Enabled or Disabled Enabled by Load Defaults Changing Boot Sequence for the Current Boot Clearing Forgotten Passwords and Cmos Settings Flashing the Bios Click Drivers & Downloads→Select ModelSystem Setup System Setup