Dell Vostro 1440 (Mid 2011) - Manual (Page 41)

Removing The CPU Fan Assembly
And The Heatsink
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1. Follow the procedures in Before Working On Your Computer .
2. Remove the battery .
3. Remove the keyboard .
4. Remove the palm rest .
5. Disconnect the CPU fan cable from the system board.
6. Remove the captive screws that secure the heat sink and CPU fan
assembly by following the sequence in the image.
7. Remove the heat sink and the CPU fan assembly from the computer.
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