Recommended Tools; Before Working On Your Computer - Dell OptiPlex 960 Service Manual

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Working on Your Computer
Dell™ Optiplex™ 960 Mini Tower/Desktop/Small Form Factor Service Manual
Recommended Tools
Before Working on Your Computer
After Working on Your Computer
This document provides procedures for removing and installing the components in your computer. Unless otherwise noted, each procedure assumes that:
You have performed the steps in
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You have read the safety information that shipped with your computer.
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When replacing a component, you have already removed the original, if installed.
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NOTE: The color of your system and certain system components may appear differently than shown in this document.
Recommended Tools
The procedures in this document may require the following tools:
Small flat-blade screwdriver
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Phillips screwdriver
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Small plastic scribe
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Flash BIOS update (see the Dell Support website at support.dell.com)
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Before Working on Your Computer
Use the following safety guidelines to help protect your computer from potential damage and to help to ensure your own personal safety.
CAUTION: 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.
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: 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.
NOTICE: To avoid damaging the computer, perform the following steps before you begin working inside the computer.
1. Ensure that the work surface is flat and clean to prevent the computer cover from being scratched.
2. Turn off your computer (see
NOTICE: To disconnect a network cable, first unplug the cable from your computer and then unplug the cable from the network device.
3. Disconnect all telephone or network cables from the computer.
4. Disconnect your computer and all attached devices from their electrical outlets.
5. Press and hold the power button while the system is unplugged to ground the system board.
6. Remove the computer cover.
Mini tower: Removing the Mini Tower Computer
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Desktop: Removing the Desktop Computer
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Small form factor : Removing the Small Form Factor Computer
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NOTICE: Before touching anything inside your computer, ground yourself by touching an unpainted metal surface, such as the metal at the back of
the computer. While you work, periodically touch an unpainted metal surface to dissipate static electricity, which could harm internal
Before Working on Your Computer.
Turning Off Your Computer).
Cover.
Cover.
Cover.