Replacing The Heat Sink; Removing The Heat Sink - Lenovo 6423 Installation Manual

Replacing the heat sink

This section provides instructions on how to replace the heat sink.
To replace the heat sink:
1. Open the computer cover. See "Opening the cover" on page 12.
2. Remove the heat sink fan cable from the system board. Note the cable location.
3. Remove the heat sink from the system board by removing the 4 screws holding
Figure 18. Removing the heat sink
4. Remove the plastic covering from the bottom of the new heat sink to expose
5. Place the new heat sink into position and replace the 4 screws to secure the
6. Reconnect the heat sink fan cable.
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ThinkStation Hardware Installation and Replacement Guide
Attention
Do not open your computer or attempt any repair before reading the "Important safety
information" in the Safety and Warranty Guide that was included with your computer. To
obtain a copy of the Safety and Warranty Guide, go to the Support Web site at:
http://www.lenovo.com/support/
the heat sink to the system board 1 . Carefully lift the heat sink off of the
system board. See Figure 18.
the heat sink grease (this cover protects the heat sink grease from
contamination).
Note: Do not remove the plastic covering the grease until you are ready to
install the heat sink on the microprocessor. Do not touch the grease the heat
sink. Do not put the heat sink anywhere except on the microprocessor after the
plastic covering has been removed and the grease exposed.
heat sink.