Dell OptiPlex 3010 (Mid 2012) - Manual (Page 23)

Removing The Front Thermal Sensor
1. Follow the procedures in Before Working Inside Your Computer .
2. Remove the cover .
3. Remove the front bezel .
4. Disconnect the thermal-sensor cable from the system board.
5. Unthread the thermal-sensor cable from the chassis clips.
6. Unthread the thermal-sensor cable from the chassis clip.
7. Pry the thermal sensor away from the chassis front and remove.
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