After Working Inside Your Computer - Dell Precision 5520 Owner's Manual
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Also See for Precision 5520:
- Service manual (118 pages) ,
- Owner's manual (111 pages) ,
- Setup and specifications (28 pages)
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To avoid damaging your computer, perform the following steps before you begin working inside the computer.
1
Ensure that your work surface is flat and clean to prevent the computer cover from being scratched.
2
Turn off your computer.
3
If the computer is connected to a docking device (docked), undock it.
CAUTION:
To disconnect a network cable, first unplug the cable from your computer and then unplug the cable from
the network device.
4
Disconnect all network cables from the computer.
5
Disconnect your computer and all attached devices from their electrical outlets.
6
Close the display and turn the computer upside-down on a flat work surface.
NOTE:
To avoid damaging the system board, you must remove the main battery before you service the computer.
7
Remove the base cover.
8
Remove the main battery.
9
Turn the computer top-side up.
10
Open the display.
11
Press and hold the power button for few seconds, to ground the system board.
CAUTION:
To guard against electrical shock, always unplug your computer from the electrical outlet before opening
the display.
CAUTION:
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 components.
12
Remove any installed ExpressCards or Smart Cards from the appropriate slots.
After working inside your computer
After you complete any replacement procedure, ensure you connect any external devices, cards, and cables before turning on your
computer.
CAUTION:
To avoid damage to the computer, use only the battery designed for this particular Dell computer. Do not use
batteries designed for other Dell computers.
1
Connect any external devices, such as a port replicator, battery slice, or media base, and replace any cards, such as an ExpressCard.
2
Connect any telephone or network cables to your computer.
CAUTION:
To connect a network cable, first plug the cable into the network device and then plug it into the computer.
3
Replace the battery.
4
Connect your computer and all attached devices to their electrical outlets.
5
Turn on your computer.
6
Working on your computer
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