Service Manual

4. At the base of the heat-sink, remove and discard any protective cover that may be over the
thermal grease by pulling on the cover's tab.
5. Carefully place the heat-sink on the microprocessor.
Be careful not to touch the surfaces coated with thermal grease. The beveled surface on the
heat-sink covers the part of the ZIF socket that is not covered by the microprocessor.
6. Drop the heat-sink clip into the heat sink's center groove, with the end of the clip that has two
slots facing the front of the ZIF socket.
7. Gently hold the heat-sink in place as you press down on the end of the shorter end of the heat-
sink clip (the end that has a single slot) until that end snaps into its tab on the back of the ZIF
socket.
8. Use your thumb to press down on the front end of the heat-sink clip (the end that has two slots)
until it snaps into the socket tab.
9. Replace the cover
, install the power cord, and turn on the system's power switch.
Battery
The system battery maintains configuration, date, and time information in a special section of memory
when you turn of the system. The operating life of the battery ranges from 2 to 5 years, depending on
how you use the system (for example, if you keep the system on most of the time, the battery gets little
use and thus lasts longer). You may need to replace the battery if an incorrect time or date is displayed
during the boot routine along with the following or similar message: