Removing and replacing the base unit access covers
The base unit access covers must be removed to access internal computer components.
Remove all removable media, such as USB flash drives, from the computer.
Turn off the computer properly through the operating system, and turn off any external devices.
Disconnect the power cord from the AC outlet and disconnect any external devices.
as the system is plugged into an active AC outlet. You must disconnect the power cord and wait
approximately 30 seconds for the power to drain to avoid damage to the internal components of the
To remove the rear access cover, press the two release buttons on the rear of the base unit (1), and at
the same time rotate the rear of the cover up (2). Then slide the cover back to remove it from the base
To remove the front access cover after removing the rear access cover:
Press the two release buttons on the rear of the front cover (1) and lift the cover straight up (2) to
cover up too far and cause the cable to disconnect.
Chapter 3 Hardware repair and upgrade
Regardless of the power-on state, voltage is always present on the system board as long
There is a cable connected to the right side of the front cover. Be careful not to pull the