Dell OptiPlex 3050 Small Form Factor Owner's Manual

Also see for D11S: Quick start guide Owner's manual Service manual Service manual Setup and specifications

Working on your computerTopics:• Safety instructions• Before working inside your computer• Turning off your computer• After working inside your computerSafety instructionsUse the following safety guidelines to protect your computer from potential damage and to ensure your personal safety. Unlessotherwise 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.NOTE: Disconnect all power sources before opening the computer cover or panels. After you finish working inside thecomputer, replace all covers, panels, and screws before connecting to the power source.NOTE: Before working inside your computer, read the safety information that shipped with your computer. For additionalsafety best practices information, see the Regulatory Compliance Homepage at www.Dell.com/regulatory_complianceCAUTION: Many repairs may only be done by a certified service technician. You should only performtroubleshooting and simple repairs as authorized in your product documentation, or as directed by the online ortelephone service and support team. Damage due to servicing that is not authorized by Dell is not covered byyour 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 periodicallytouching an unpainted metal surface at the same time as touching 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 acard by its edges or by its metal mounting bracket. Hold a component such as a processor by its edges, not byits pins.CAUTION: When you disconnect a cable, pull on its connector or on its pull-tab, not on the cable itself. Somecables have connectors with locking tabs; if you are disconnecting this type of cable, press in on the lockingtabs before you disconnect the cable. As you pull connectors apart, keep them evenly aligned to avoid bendingany connector pins. Also, before you connect a cable, ensure that both connectors are correctly oriented andaligned.NOTE: The color of your computer and certain components may appear differently than shown in this document.Before working inside your computerTo avoid damaging your computer, perform the following steps before you begin working inside the computer.1. Ensure that you follow the Safety instructions.2. Ensure that your work surface is flat and clean to prevent the computer cover from being scratched.3. Ensure you follow the Turning off your computer.4. Disconnect all network cables from the computer.16 Working on your computer