Lenovo 4229 Personal Computer User Manual


 
5. Press the tab and then pivot the hard disk drive fan outward to remove it from the chassis.
Figure 29. Removing the hard disk drive fan assembly
6. Position the hard disk drive fan, and then pivot the fan to insert the tab into the chassis.
7. Reconnect the hard disk drive fan cable to the system board.
What to do next:
To work with another piece of hardware, go to the appropriate section.
To complete the installation or replacement, go to “Completing the parts replacement” on page 56.
Replacing the rear fan assembly
Attention: Do not open your computer or attempt any repair before reading and understanding the “Important
safety information” on page v.
This section provides instructions on how to replace the rear fan assembly.
To replace the rear fan assembly, do the following:
1. Turn off the computer and disconnect all power cords from electrical outlets.
2. Remove the computer cover. See “Removing the computer cover” on page 30.
3. Locate the rear fan assembly. See “Locating components” on page 9.
4. Disconnect the rear fan assembly cable from the system fan connector on the system board. See
“Locating parts on the system board” on page 10.
46 ThinkStation User Guide