Dell OptiPlex 755 User's Guide - Page 261
Processor
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Processor 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 Follow the procedures in "Before You Begin" on page 21. 2 Remove the computer cover (see "Removing the Computer Cover" on page 168). 3 Remove the fan shroud by lifting the fan shroud up and away from the computer. 1 1 fan shroud CAUTION: The heat sink can get extremely hot. Ensure that the heat sink has had sufficient time to cool before you touch it. Processor 261