Dell OptiPlex SX280 - Manual (Page 63)

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Processor
Dell™ OptiPlex™ SX280 User's Guide
1. Follow the procedures in " Before You Begin ."
2. Remove the fan shroud by lifting the fan shroud up and away from the computer.
3. Remove the heat sink.
a. Remove the memory module (see " Removing Memory ") closest to the heat sink.
b. Press the lever on the retention base until the heat sink is released.
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.
CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before removing the cover.
NOTICE: When replacing the processor, do not touch the underside of the new processor.
NOTICE: When replacing the processor, do not touch any of the pins inside the socket or allow any objects to fall on the pins in the socket.
1 fan shroud
CAUTION: The heat sink can get extremely hot. Be sure the heat sink has had sufficient time to cool before you touch it.