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8. Depending on which fan assembly you are replacing, reconnect the fan assembly cable to the adapter
card fan assembly connector or the rear fan assembly connector on the system board. See “Locating
parts on the system board ” on page 81.
9. If you are installing the hard disk drive fan assembly, reinstall the front bezel.
10. Go to “Completing the FRU replacement” on page 108.
Replacing the front panel connectors assembly
Attention
Do not open your computer or attempt any repair before reading and understanding the “Important safety information”
in the ThinkStation Safety and Warranty Guide that came with your computer. To obtain a copy of the ThinkStation
Safety and Warranty Guide, go to:
http://www.lenovo.com/support.
This section provides instructions on how to replace the front panel connectors assembly.
To remove or replace the front panel connectors assembly, do the following:
1. Remove the computer cover. See “Removing the cover” on page 78.
2. Remove the front bezel. See “Removing the front bezel” on page 82.
3. Locate the front panel connectors assembly.
4. Disconnect the front audio, front USB, and auxiliary LED cables from the system board and note the
cables routing. See “Locating parts on the system board ” on page 81.
5. Remove the screw that secures the front panel connectors assembly to the chassis. Rotate the
assembly to release it completely from the chassis.
Chapter 10. Replacing FRUs (Type 4105, 4157, 4217) 105