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Removing and Replacing Parts 4-3
P
recautionary Measures
Before performing any of the procedures in this chapter, read the following
warning.
Follow these precautionary measures before removing or replacing any parts
that are described in this chapter:
1. Determine the power state of the computer.
If the display is on, go to step 2.
Check the status display window to determine the status of the computer. If
the display is off, press the power key to verify that the computer is not in
suspend or standby mode. Then proceed to step 2.
2. Turn off any attached peripherals, and then shut down the computer.
3. Disconnect the computer and any attached peripherals from AC power
sources to reduce the potential for personal injury or shock.
If the computer has an AC adapter, disconnect the adapter from the AC
power source, and then disconnect the AC adapter from the computer or
from the port replicator (see Figures 4-3 and 4-4).
WARNING FOR YOUR PERSONAL SAFETY AND PROTECTION
OF THE EQUIPMENT: Before you start to work on the computer, per-
form the following steps in the sequence indicated.
1. Turn off the computer and any attached peripherals.
2. Disconnect the computer and any attached peripherals from AC
power sources to reduce the potential for personal injury or shock.
3. Ground yourself by attaching an antistatic grounding strap to your
wrist and to an unpainted metal surface on the computer’s I/O panel.
If an antistatic grounding strap is not available, periodically dis-
charge static electricity from your body by touching one of the
connectors on the I/O panel.