IBM 8668 Hardware Maintenance Manual - Page 79

Power supplies, Reinstall the air-baffle assembly over the fan assembly located on the rear

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8. Install the heat sink: Attention: You must install the same type of heat sink that comes shipped in your server. a. Remove the thermal tape liner from the underside of the heat sink and discard it. b. Align and place the heat sink on the top of the microprocessor. Heat sink (Remove thermal tape liner on installation) Microprocessor release lever Ensure correct alignment of heat sink, mounting clip, and mounting socket Make sure the heat-sink guide fits between the microprocessor and the microprocessor socket. Heat sink guide Spring retention clip c. Press down and latch the spring retention clip on the back of the heat sink (the side facing the back of the server). d. Press down and latch the spring retention clip on the front of the heat sink (the side facing the front of the server). 9. Reinstall the air-baffle assembly over the fan assembly located on the rear of the server and rest the baffle body over the microprocessors. 10. If you have other options to install or remove, do so now; otherwise, go to "Completing the installation" on page 82. Power supplies The server comes with one 385-watt power supply or two 250-watt power supplies. The 385-watt power-supply configuration can be upgraded with an optional backplane that will enable you to install up to a maximum of three 250-watt power supplies. This enables redundancy and will make the power Installing options 71

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8.
Install the heat sink:
Attention:
You must install the same type of heat sink that comes shipped in
your server.
a.
Remove the thermal tape liner from the underside of the heat sink and
discard it.
b.
Align and place the heat sink on the top of the microprocessor.
Heat sink
(Remove thermal tape
liner on installation)
Ensure correct alignment
of heat sink, mounting clip,
and mounting socket
Microprocessor
release lever
Make sure the heat-sink guide fits between the microprocessor and the
microprocessor socket.
Spring retention clip
Heat sink guide
c.
Press down and latch the spring retention clip on the back of the heat sink
(the side facing the back of the server).
d.
Press down and latch the spring retention clip on the front of the heat sink
(the side facing the front of the server).
9.
Reinstall the air-baffle assembly over the fan assembly located on the rear of
the server and rest the baffle body over the microprocessors.
10.
If you have other options to install or remove, do so now; otherwise, go to
“Completing the installation” on page 82.
Power supplies
The server comes with one 385-watt power supply or two 250-watt power
supplies. The 385-watt power-supply configuration can be upgraded with an
optional backplane that will enable you to install up to a maximum of three
250-watt power supplies. This enables redundancy and will make the power
Installing options
71