Lenovo ThinkServer RD120 Hardware Maintenance Manual page 135

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Retainer bracket
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Microprocessor
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.
8. Replace the microprocessor air baffle (see "Installing the microprocessor air
baffle" on page 58).
9. Install the cover (see "Installing the cover" on page 57).
10. Slide the server into the rack.
11. Reconnect the external cables; then, reconnect the power cords and turn on
the peripheral devices and the server.
Attention: In a dc power environment, only trained service personnel other
than Lenovo service technicians are authorized to connect or disconnect power
to the dc power supply. See the documentation that comes with each dc power
supply.
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Chapter 4. Removing and replacing server components
Heat sink release lever
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