Removing a microprocessor and heat sinkAttention:v Microprocessors are to be removed only by trained service technicians.v Always use the microprocessor installation tool to remove a microprocessor.Failing to use the microprocessor installation tool may damage themicroprocessor sockets on the system board. Any damage to the microprocessorsockets may require replacing the system board.v Do not allow the thermal grease on the microprocessor and heat sink to come incontact with anything. Contact with any surface can compromise the thermalgrease and the microprocessor socket.v Dropping the microprocessor during installation or removal can damage thecontacts.v Do not touch the microprocessor contacts; handle the microprocessor by theedges only. Contaminants on the microprocessor contacts, such as oil from yourskin, can cause connection failures between the contacts and the socket.To remove a microprocessor and heat sink, complete the following steps:1. Read the safety information that begins on page vii, “Handling static-sensitivedevices” on page 135, and “Installation guidelines” on page 133.2. Turn off the server and peripheral devices and disconnect the power cord andall external cables.3. Remove the cover (see “Removing the cover” on page 145).4. If you have the optional hot-swap rear hard disk drive cage installed, rotate itup (see “Rotating the optional hot-swap rear hard disk drive cage up” on page147).5. Remove the air baffle (see “Removing the air baffle” on page 148).6. Loosen the four screws that secure the heat sink to the chassis.7. Lift the heat sink out of the server. If the heat sink sticks to the microprocessor,slightly twist the heat sink back and forth to break the seal. After removal,place the heat sink on its side on a clean, flat surface.Attention: Do not touch the thermal material on the bottom of the heat sink.Touching the thermal material will contaminate it. If the thermal material on themicroprocessor or heat sink becomes contaminated, you must replace it.Chapter 5. Removing and replacing server components 221
