Replacing The Heat Sink; Removing The Power-Supply-Retaining Screws - Lenovo 9686 Hardware Installation And Replacement Manual

3. Remove the four screws at the rear of the chassis that secure the power supply.
Figure 22. Removing the power-supply-retaining screws
4. Lift the power supply out of the chassis.
5. Install the new power supply into the chassis so that the screw holes in the
6. Install the four screws to secure the power supply.
7. Reconnect the power supply connectors to the system board.
8. Reconnect a power supply connector to each of the drives.
9. Go to Chapter 4, "Completing the parts replacement," on page 47.

Replacing the heat sink

This section provides instructions on how to replace the heat sink.
power supply align with those in the chassis.
Note: Use only the screws provided by Lenovo.
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.
1. Remove the computer cover. See "Removing the cover" on page 13.
2. Lay the computer on its side.
3. Locate the heat sink. See "Identifying parts on the system board" on page 9.
4. Disconnect the heat sink and the fan assembly cable from the system board.
5. Depending on which heat sink you are removing, do one of the following:
Chapter 3. Installing options and replacing hardware
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