Lenovo ThinkCentre 7570, Hardware Maintenance Manual

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Figure 17. Removing the computer wall mount
9. Connect the thermal sensor cable to the system board. See “System board parts and connectors”
on page 71.
10. Go to “Completing the parts replacement” on page 113.
Replacing the system fan
Attention
Do not open your computer or attempt any repair before reading and understanding the “Important safety
information” in the
ThinkCentre Safety and Warranty Guide that came with your computer. To obtain a copy
of the ThinkCentre Safety and Warranty Guide , go to:
http://www.lenovo.com/support
This section provides instructions on how to replace the system fan.
To replace the system fan, do the following:
1. Remove all media from the drives and turn off all attached devices and the computer. Then, disconnect
all power cords from electrical outlets and disconnect all cables that are connected to the computer.
2. Place a soft, clean towel or cloth on the desk or surface. Hold the sides of your computer and gently lay
it down so that the screen is against the surface and the cover is facing up.
3. Remove the computer cover. See “Removing the computer cover” on page 73.
4. Locate the system fan in the computer. See “FRU locations” on page 69.
5. Remove the hard disk drive. See “Replacing the hard disk drive” on page 74.
6. Remove the wall mount to gain access to the system fan. See “Removing or reinstalling the wall mount”
on page 82.
7. Remove the three screws 1 that secure the system fan to the main bracket.
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ThinkCentre Hardware Maintenance Manual