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5 Removing and replacing components
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Thermal grease: The thermal grease must be replaced whenever the heat sink has been
removed from the top of the microprocessor and is going to be reused or when debris is
found in the grease.
To replace damaged or contaminated thermal grease on the microprocessor and heat sink,
complete the following steps:
Step 23 Place the heat sink on a clean work surface.
Step 24 Remove the alcohol wipe from its package and unfold it completely.
Step 25 Use the alcohol wipe to clean the thermal grease from the bottom of the heat sink.
Step 26 Use a clean area of the alcohol wipe to clean the thermal grease from the microprocessor;
then, dispose of the alcohol wipe after all of the thermal grease is removed.
Step 27 Use the thermal-grease syringe to place 9 uniformly spaced dots of 0.02 mL each on the top
of the microprocessor. The outermost dots must be within 5 mm of the edge.
Step 28 Install the heat sink onto the microprocessor as described in "Installing a microprocessor and
heat sink".
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5-66
NOTE
Make sure that all of the thermal grease is removed.
NOTE
0.01mL is one tick mark on the syringe. If the grease is properly applied, approximately half of the
grease will remain in the syringe.
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Tecal RH5485 Server
Problem Determination and Service Guide
Issue 02 (2011-05-25)
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