Before Working Inside Your Computer; Before You Begin; Safety Instructions - Dell XPS 8900 Service Manual

Before working inside your
computer
NOTE: The images in this document may differ from your computer
depending on the configuration you ordered.

Before you begin

1 Save and close all open files and exit all open applications.
2 Shut down your computer.
– Windows 10: Click or tap Start →
– Windows 8.1: On the Start screen, click or tap the power icon
Shut down.
– Windows 7: Click or tap Start → Shut down.
NOTE: If you are using a different operating system, see the
documentation of your operating system for shut-down
instructions.
3 Disconnect your computer and all attached devices from their electrical
outlets.
4 Disconnect all cables such as telephone cables, network cables and so
on, from your computer.
5 Disconnect all attached devices and peripherals, such as keyboard,
mouse, monitor, and so on, from your computer.
6 Remove any media card and optical disc from your computer, if
applicable.
7 After the computer is unplugged, press and hold the power button for 5
seconds to ground the system board.

Safety instructions

Use the following safety guidelines to protect your computer from potential
damage and ensure your personal safety.
Power → Shut down.
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