IBM 8685 Hardware Maintenance Manual - Page 129

Service replaceable units, Microprocessor removal

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Chapter 5. Service replaceable units This chapter describes the removal of server components. Important: The field replaceable unit (FRU) procedures are intended for trained servicers who are familiar with IBM xSeries products. See the parts listing in "System" on page 162 to determine if the component being replaced is a customer replaceable unit (CRU) or a FRU. Microprocessor removal Complete the following steps to remove a microprocessor. Note: v Read "Before you begin" on page 41. v Read the safety notices at "Safety information" on page 169. v Read "Handling electrostatic discharge-sensitive devices" on page 172. 1. Turn off the server and disconnect all power cords and external cables; then, remove the server cover (see "Removing the top cover and bezel" on page 51). 2. Remove the air baffle: a. Pull out the two plastic fasteners (also known as pop rivets) on the front of the air baffle. Note: Do not remove the fasteners from the server. b. Grasp the handle on the air baffle; then, lift the air baffle from the server. 3. Identify the microprocessor to be removed. Note: If you are replacing a failed microprocessor, verify that you have selected the correct microprocessor for replacement. To do this, check the microprocessor LEDs on the system board to see which LED is on. 4. Remove the heat sink: a. Loosen one captive screw fully; then, loosen the other captive screw. Attention: Loosening one screw fully before loosening the other screw will help to break the thermal bond that adheres the heat sink to the microprocessor. b. Gently pull the heat sink off of the microprocessor. Microprocessor Microprocessorrelease lever © Copyright IBM Corp. 2002 119

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Chapter 5. Service replaceable units
This chapter describes the removal of server components.
Important:
The field replaceable unit (FRU) procedures are intended for trained
servicers who are familiar with IBM xSeries products. See the parts
listing in “System” on page 162 to determine if the component being
replaced is a customer replaceable unit (CRU) or a FRU.
Microprocessor removal
Complete the following steps to remove a microprocessor.
Note:
v
Read “Before you begin” on page 41.
v
Read the safety notices at “Safety information” on page 169.
v
Read “Handling electrostatic discharge-sensitive devices” on page 172.
1.
Turn off the server and disconnect all power cords and external cables; then,
remove the server cover (see “Removing the top cover and bezel” on page 51).
2.
Remove the air baffle:
a.
Pull out the two plastic fasteners (also known as pop rivets) on the front of
the air baffle.
Note:
Do not remove the fasteners from the server.
b.
Grasp the handle on the air baffle; then, lift the air baffle from the server.
3.
Identify the microprocessor to be removed.
Note:
If you are replacing a failed microprocessor, verify that you have selected
the correct microprocessor for replacement. To do this, check the
microprocessor LEDs on the system board to see which LED is on.
4.
Remove the heat sink:
a.
Loosen one captive screw fully; then, loosen the other captive screw.
Attention:
Loosening one screw fully before loosening the other screw will
help to break the thermal bond that adheres the heat sink to the
microprocessor.
b.
Gently pull the heat sink off of the microprocessor.
Microprocessor
Microprocessor-
release lever
© Copyright IBM Corp. 2002
119