Removing A Heat-Sink Retention Module - IBM 7985 Problem Determination And Service Manual

10. Connect the cables and power cords.
11. Turn on all attached devices and the server.

Removing a heat-sink retention module

To remove a heat-sink retention module, complete the following steps:
1. Read the safety information that begins on page vii, and "Installation guidelines"
2. Turn off the server, and all attached devices.
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IBM System x3655 Type 7985 and 7943: Problem Determination and Service Guide
Attention: Do not touch the thermal grease on the bottom of the heat sink or
set down the heat sink after the plastic cover is removed. Touching the thermal
grease will contaminate it.
a. Make sure that the heat-sink release lever is in the open position.
b. Remove the plastic protective cover from the bottom of the heat sink.
c. Align the heat sink above the microprocessor with the thermal grease side
down. Press firmly on the heat sink.
Heat sink
release lever
d. Slide the rear flange of the heat sink into the opening in the retainer
bracket.
e. Press down firmly on the front of the heat sink until it is seated securely.
f. Rotate the heat-sink release lever to the closed position and hook it
underneath the lock tab.
6. Install the air baffle (see "Installing the air baffle" on page 112).
7. Install the riser-card assembly (see "Installing the riser-card assembly" on page
155).
8. Install the cover (see "Installing the cover" on page 110).
9. Slide the server into the rack.
on page 105.
Thermal grease
Heat sink
Microprocessor
Retainer bracket