Dell PowerApp .cache 100 Technical manual

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This document updates information contained in your Dell PowerApp 100 appliance
documentation.
If you replace the appliance’s microprocessor and heat sink assembly, you must remove the fan
attached to the top of the replacement microprocessor and heat sink assembly. (For details on
removing the microprocessor, see “Microprocessor” in your Service Manual.)
To install the replacement microprocessor and heat sink assembly, perform the following steps:
1. If applicable, remove the fan from the heat sink in the replacement kit.
The fan will not be used. To remove the fan, gently squeeze the sides of two adjacent cor-
ners on the fan.
2. Gently place the replacement microprocessor into the zero insertion force (ZIF) socket so
that the processor pins mate exactly with the ZIF socket.
Make sure that pin 1 of the microprocessor is oriented correctly in the socket.
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3. Swing the ZIF socket arm down until it snaps into the socket tab after the microprocessor is
in place.
4. At the base of the heat sink, remove and discard the protective cover over the thermal
grease by pulling the cover’s tab.
5. Place the heat sink on the microprocessor.
Be careful not to touch the surfaces coated with thermal grease.
The bevelled 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 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 (see Figure 1).
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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 reboot the computer.
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Information in this document is subject to change without notice.
© 2000 Dell Computer Corporation. All rights reserved. Printed in the U.S.A.
Trademarks used in this text: Dell, the DELL E COM logo, and PowerApp are trademarks of Dell Computer Corporation. Other
trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their
products. Dell Computer Corporation disclaims any proprietary interest in trademarks and trade names other than its own.
heat sink clip
microprocessor and
heat sink assembly
tabs on ZIF socket (2)
ZIF socket
ZIF socket
release lever