Dell 9020 owner manual Working on Your Computer, Before Working Inside Your Computer

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Working on Your Computer

Before Working Inside Your Computer

Use the following safety guidelines to help protect your computer from potential damage and to help to ensure your personal safety. Unless otherwise noted, each procedure included in this document assumes that the following conditions exist:

You have read the safety information that shipped with your computer.

A component can be replaced or--if purchased separately--installed by performing the removal procedure in reverse order.

WARNING: Disconnect 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 to the power source.

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: Many repairs may only be done by a certified service technician. You should only perform troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructions that came with the product.

CAUTION: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface, such as a connector on the back of the computer.

CAUTION: Handle components and cards with care. Do not touch the components or contacts on a card. Hold a card by its edges or by its metal mounting bracket. Hold a component such as a processor by its edges, not by its pins.

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.

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

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Contents Dell OptiPlex 9020 Mini Tower Page Contents Diagnostics Before Working Inside Your Computer Working on Your ComputerTurning Off Your Computer After Working Inside Your Computer Page Installing the Cover Removing and Installing ComponentsRecommended Tools Removing the CoverRemoving the Wireless Local Area Network Wlan Card Removing the Intrusion SwitchInstalling the Intrusion Switch Installing the Wireless Local Area Network Wlan Card Removing the Expansion Card Installing the Front BezelRemoving the Front Bezel Memory Module Guidelines Installing the Expansion CardRemoving the Memory Installing the MemoryRemoving the Coin-Cell Battery Removing the Hard Drive Installing the Coin-Cell BatteryRemoving the Optical Drive Installing the Hard DriveInstalling the Optical Drive Removing the Speaker Installing the SpeakerRemoving the Power Supply Page Removing the Heat Sink Assembly Installing the Power SupplyInstalling the Heat Sink Assembly Removing the ProcessorRemoving the System Fan Installing the ProcessorRemoving the Thermal Sensor Installing the System FanPage Removing the Power Switch Installing the Thermal SensorInstalling the Power Switch Removing the Input/Output I/O Panel Removing the System Board Installing the Input/Output I/O PanelInstalling the System Board Components Of The System Board System Board ComponentsPage Navigation Keys System SetupBoot Sequence Uefi System Setup OptionsCOM1 Sata Optional Computrace Service from Absolute Software KEK Erased and the keys will restore to default settings Page Post Behavior When Lookup Method is set to Static IP Jumper Settings Updating the BiosPassword Type System and Setup PasswordDisabling a System Password Page Enhanced Pre-Boot System Assessment ePSA Diagnostics DiagnosticsPage Power LED Diagnostics Troubleshooting Your ComputerBeep Code Error MessagesDIMM1 Page Page Page DDR3 SpecificationsPCI Drives Internal Connectors Controls and Lights Power Page Page Contacting Dell
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