Dell Inspiron 3800 - Manual (Page 46)

Recommended Tools
Most of the procedures in this document require the use of one or more of the following tools:
l # 1 magnetized Phillips-head screwdriver
l Small flat-blade screwdriver
l Small plastic scribe
l Processor extractor
Preparing to Work Inside the Computer
Before you start to work on the computer, perform the following steps.
NOTICE: Failure to perform the following steps could result in damage to the computer.
NOTICE: If working inside your computer involves the removal of the palmrest, note this information
about the reserve battery. The reserve battery provides power to the computer
’s real-time clock (RTC)
and nonvolatile random-access memory (NVRAM) when the computer is turned off. Removing the
palmrest disconnects the reserve battery and causes the computer to lose the date and time information
as well as all user-specified parameters in NVRAM. If possible, make a copy of this information before you
disconnect the reserve battery.
1. Save any work in progress and close all open application programs.
2. Turn off the computer and any attached peripherals.
3. If the computer is docked in an advanced port replicator (APR), undock the computer.
4. Disconnect the computer and any attached peripherals from their electrical outlets to reduce the
potential for personal injury or shock.
Also disconnect any telephone or telecommunications lines from the computer.
5. Remove the power cable.
6. Disconnect all other external cables from the computer.
7. Remove any installed PC Cards.
NOTICE: Make sure that the work surface is clean to prevent scratching the computer cover.
NOTICE: To avoid damaging the system board, remove the power cable, the battery, and the
NOTE: Make sure that the computer is turned off and not in save-to-disk suspend (S2D) mode. If you
cannot shut down the computer using the computer’s operating system, press the power button for 4
seconds.