IBM System x3400 Type 7973, Problem Determination And Service Manual

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Removing the microprocessor and heat sink
To remove the microprocessor and heat sink, complete the following steps.
1. Read the safety information that begins on page vii and “Installation guidelines”
on page 95.
2. Turn off the server and all attached devices; then, disconnect all power cords
and external cables.
3. Turn the server on its side so that it is lying flat, with the cover facing up.
4. Unlock and remove the side cover (see “Removing the side cover” on page
100).
5. Rotate the power-supply cage assembly out of the chassis:
v Hot-swap models:
a. Remove the hot-swap power-supply. Press down on the orange release
lever and pull the power supply out of the bay, using the handle.
b. Lift up the power-supply cage handle and pull the power-supply cage
assembly all the way up until the retainer latch locks the cage in place
on the chassis.
v
Non-hot-swap models, lift up the power-supply cage handle and pull the
power-supply cage assembly all the way up until the retainer latch locks the
cage in place on the chassis.:
6. Remove the microprocessor air baffle by grasping the two tabs and squeezing
them together slightly and lift the baffle out of the server.
7. Rotate the rear system fan air baffle up out of the way by grasping the tab and
pulling the baffle all the way up; then, slide it outward over the rear of the
server until it locks in place.
8. Disconnect any cables that impede access to the heat sink and
microprocessor.
9. Remove the heat sink from the microprocessor:
Attention: The microprocessor release lever is spring-loaded when the
microprocessor is in place. Releasing the lever too quickly or allowing it to
spring upward can damage the microprocessor and surrounding components.
a. Lift the heat-sink locking lever, moving it to the side and slowly releasing it
to the open (up) position.
Chapter 4. Removing and replacing server components
155