IBM IntelliStation M Pro 6218, 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 73.
2. Turn off the computer and all attached devices; then, disconnect all external
cables and power cords.
3. Turn the computer on its side so that it is lying flat, with the cover facing up.
4. Remove the side cover (see “Removing the side cover” on page 75).
5. Remove the hard disk drive bracket, if one is installed (see “Removing the
hard disk drive bracket” on page 95).
6. Remove the air baffle from the microprocessor fan assembly (see “Removing
the microprocessor fan assembly” on page 81).
7. Disconnect any cables that impede access to the heat sink and
microprocessor.
Attention: The heat-sink retention lever is spring-loaded when the heat sink
is in place. Releasing the lever too quickly or allowing it to spring upward can
damage the heat sink and surrounding components.
8. Remove the heat sink from the microprocessor (see Figure 45):
a. Release the heat-sink retention lever by pressing down on the end, moving
it to the left and slowly releasing it to the open (up) position.
Important: Be careful when handling the microprocessor and heat sink. If
the microprocessor and heat sink will be reused, do not contaminate the
thermal material between them.
Retention lever
Orientation
key
Figure 45. Removing the heat sink
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IBM IntelliStation M Pro Type 6218 and 9236: Problem Determination and Service Guide