Removing and replacing FRUs
FRUs must be installed only by trained service technicians.
The illustrations in this document might differ slightly from the hardware.
Removing a microprocessor
Attention:
v Do not allow the thermal grease on the microprocessor and heat sink to come in
contact with anything. Contact with any surface can compromise the thermal
grease and the microprocessor socket.
v Use the vacuum tool that comes with the replacement microprocessor to remove
the microprocessor. Dropping the microprocessor during installation or removal
can damage the contacts.
v Do not touch the microprocessor contacts; handle the microprocessor by the
edges only. Contaminants on the microprocessor contacts, such as oil from your
skin, can cause connection failures between the contacts and the socket.
To
remove a microprocessor, complete the following steps:
1. Read the safety information that begins on page vii and “Installation guidelines”
on page 87.
2. Turn off the server and peripheral devices, and disconnect the power cords
and all external cables necessary to replace the device.
3. Remove the cover (see “Removing the cover” on page 90).
4. Remove the microprocessor air baffle (see “Removing the microprocessor air
baffle” on page 91).
Retainer bracket
Microprocessor
Heat sink
release lever
5. Open the heat-sink release latch to the fully open position.
6. Lift the heat sink out of the server.
134 IBM System x3650 Type 7979 and 1914: Problem Determination and Service Guide
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