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Before You Begin
To make working inside your computer easier, make sure you have adequate lighting and a clean work space. If you temporarily disconnect cables or remove expansion cards, note the position of the connectors and slots so that you can reassemble the system correctly.
You will use the information in this section every time you install a hardware option inside your computer. Read this section carefully
, because the information is not repeated in detail elsewhere in this guide.
Safety First-For You and Your Computer
Working inside your computer is safe - if you observe the following precautions.
WARNING: WARNING FOR YOUR PERSONAL SAFETY AND PROTECTION OF YOUR EQUIPMENT
Before starting to work on your computer, perform the following steps in the sequence indicated:
- Turn off your computer and all peripherals.
- Disconnect your computer and peripherals from their electrical outlets. Also, disconnect any telephone or telecommunication lines from the computer. Doing so reduces the potential for personal injury or shock.
- If you are disconnecting a peripheral from the computer or are removing a component from the system board, wait 5 seconds after turning off the computer before disconnecting the peripheral or removing the component to avoid possible damage to the system board.
- Touch an unpainted metal surface on the computer chassis, such as the power supply, before touching anything inside your computer.
While you work, periodically touch an unpainted metal surface on the computer chassis to dissipate any static electricity that might harm internal components. Also avoid touching components or contacts on a card and avoid touching pins on a chip.
In addition, Dell recommends that you periodically review the safety instructions at the front of this guide.
Unpacking Your Hardware Option
When you remove an option from its shipping carton, you may find it wrapped in antistatic packing material designed to protect it from electrostatic damage. Do not remove the packing material until you are ready to install the option.
CAUTION: Turn off the computer and unplug it from the electrical outlet. See "Protecting Against Electrostatic Discharge" in the safety instructions at the front of this guide.
Removing the Computer Cover
To remove the computer cover, follow these steps:
Replacing the Computer Cover
- Turn off your computer and peripherals, and observe the Warning for Your Personal Safety and Protection of Your Equipment described earlier in this chapter. Also observe the safety instructions at the front of this guide.
- If you have installed a padlock through the padlock ring on the cover and the back panel (see Figure 5-1), remove the padlock.
Figure 5-1. Padlock Installed
- Remove the cover.
Facing the left side cover, press the release button (located at the bottom-left corner of the front bezel) and lift the bottom of the cover, allowing it to pivot up toward you (see Figure 5-2).
Disengage the tabs that secure the cover to the top of the chassis, and lift the cover away.
Figure 5-2. Removing the Computer Cover
To replace the computer cover, follow these steps:
- Check all cable connections, especially those that might have come loose during your work. Fold cables out of the way so that they do not catch on the computer cover. Make sure cables are not routed over the drive cage-they will prevent the cover from closing properly.
- Check to see that no tools or extra parts (including screws) are left inside the computer's chassis.
- Replace the cover.
Facing the left side of the computer, hold the cover at a slight angle as shown in Figure 5-3, and then align the top of the cover with the top of the chassis. Insert the tabs on the cover into the recessed slots on the computer chassis so that the tabs catch the hooks inside the slots.
Pivot the cover down toward the bottom of the chassis and into position. Make sure that the securing hooks at the bottom of the cover click into place.
Figure 5-3. Replacing the Computer Cover
- If you are using a padlock to secure your system, reinstall the padlock.
- Clear the chassis intrusion alert message.
Enter the System Setup program and reset Chassis Intrusion to Not Detected. See "Chassis Intrusion" for instructions.