Lenovo PC 300PL Installing Options in your PC300PL - 6592 - Page 21

Disconnecting Cables and Removing the Side Cover

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Disconnecting Cables and Removing the Side Cover Before you begin Read "Electrical Safety" on page 4 and "Handling Static-Sensitive Devices" on page 5. Remove any media (diskettes, compact discs, or tapes) from the drives, and then turn off all attached devices and the computer. Warning: The presence of 5 V standby power might result in damage to your hardware unless you disconnect the power cord from the wall before opening the computer. 1 Unplug all power cords from electrical outlets. 2 If you have a modem or fax machine attached to your computer, disconnect the telephone line from the wall outlet and the computer. 3 Disconnect all cables attached to the computer; this includes power cords, input/output (I/O) cables, and any other cables connected to the computer. Chapter 2. Preparing to Install and Remove Options 7

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Disconnecting Cables and Removing the Side Cover
Before you begin
±
Read “Electrical Safety” on page
4 and “Handling Static-Sensitive Devices”
on page
5.
±
Remove any media (diskettes, compact discs, or tapes) from the drives, and
then turn off all attached devices and the computer.
Warning:
The presence of 5 V standby power might result in damage to your
hardware unless you disconnect the power cord from the wall before opening the
computer.
1
Unplug all power cords from electrical outlets.
2
If you have a modem or fax machine attached to your computer, disconnect
the telephone line from the wall outlet and the computer.
3
Disconnect all cables attached to the computer; this includes power cords,
input/output (I/O) cables, and any other cables connected to the computer.
Chapter
2.
Preparing to Install and Remove Options
7