Dell Studio 1557 (Late 2009) - Manual (Page 14)

1. Follow the instructions in Before You Begin .
2. Align the four captive screws on the thermal-cooling assembly processor cover with the screw holes on the system board and tighten the screws in
sequential order.
3. Replace the system board on the computer base.
4. Replace the six screws that secure the system board to the computer base.
5. Connect the AC adapter connector cable, USB cable, fan cable, and the subwoofer cable to their respective connectors on the system board (see
Replacing the System Board Assembly ).
6. Connect the ExpressCard cables to their respective connectors on the system board (see Replacing the ExpressCard Board ).
7. Replace the optical drive (see Replacing the Optical Drive ).
8. Slide the battery into the battery bay until it clicks into place.
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NOTE: This procedure assumes that you have already removed the processor heat sink and are ready to replace it.