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Replacing the thermal sensor
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 thermal sensor.
To replace the thermal sensor, 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 36.
4. Locate the thermal sensor. See “Locating components” on page 12.
5. Note the routing of the thermal sensor cable and then disconnect the thermal sensor cable from the
system board.
6. Remove the screws 1 that secure the VESA mount bracket and then lift the VESA mount bracket
off the chassis.
Note: The location of the screws
1 that secure the VESA mount bracket to the chassis is different
between models with the 20-inch display and models with the 23-inch display.
Figure 31. Removing the VESA mount bracket
7. Press one of the thermal sensor clips inward to disengage the thermal sensor from the VESA mount
bracket.
Note: The location of the thermal sensor in your computer might be slightly different from the illustration.
52 ThinkCentre User Guide