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Before You Begin
Dell™ Dimension™ 8300 Series Service Manual
Getting Started
Recommended Tools
Shutting Down Your Computer
Getting Started
This section provides procedures for removing and installing the components in your computer. Unless otherwise noted, each procedure assumes that the following conditions exist:
•You have performed the steps in "Shutting Down Your Computer."
•You have read the safety information in your Owner’s Manual.
Recommended Tools
The procedures in this document may require the following tools:
•Small
•Phillips screwdriver
•Flash BIOS update program floppy disk or CD
Shutting Down Your Computer
Use the following safety guidelines to help protect your computer from potential damage and to ensure your own personal safety.
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Owner's Manual.
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.
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 microprocessor by its edges, not by its pins.
NOTICE: When you disconnect a cable, pull on its connector or on its
NOTICE: To avoid damaging the computer, perform the following steps before you begin working inside the computer.
1.Shut down the computer.
2.Ensure that the computer and any attached devices are turned off. If your computer and attached devices did not automatically turn off when you shut down your computer, press and hold the power button for 4 seconds.
NOTICE: To disconnect a network cable, first unplug the cable from your computer and then unplug it from the network wall jack.
3.Disconnect any telephone or telecommunication lines from the computer.
4.Disconnect your computer and all attached devices from their electrical outlets, and then press the power button to ground the system board.
5.Remove the computer stand, if it is attached.
CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before opening the cover.
6. Open the computer cover.
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 any static electricity that could harm internal components.