Dell Inspiron 3700 Reference Manual page 115

To remove the microprocessor module, perform the following steps.
NOTICE: To avoid damaging the system board, the power cable, battery, and second battery (if installed) must be removed before
you service the computer.
1. Remove the main battery.
2. Remove the keyboard assembly.
NOTICE: To ensure maximum cooling for the microprocessor, do not touch the heat transfer areas on the thermal cooling assembly
(TCA). The oils in your skin reduce the heat transfer capability of the thermal pads.
3. Remove the two 3-mm screws on the microprocessor shield that secure the thermal cooling assembly to the microprocessor module (see
Figure 12).
4. Loosen the three captive screws securing the microprocessor shield to the microprocessor module.
5. Remove the microprocessor shield.
6. Rotate the arm of the thermal cooling assembly up and away from the microprocessor module.
NOTICE: When removing the microprocessor module, pull the module straight up. Do not move the tool from side to side to extract
the processor board.
7. Use a microprocessor extractor tool to remove the microprocessor module.
The tool fits on the left side of the module aligned with white marks on the front and back edge of the processor board (see
Replacing the Microprocessor Module
NOTICE: Proper seating of the microprocessor module requires a considerable amount of force (approximately 35 pounds [16
kilograms]) applied above the module connector. A microprocessor module that is not properly seated can result in an intermittent
connection and subsequent failures.
When you reinstall the microprocessor module in the system board, make sure that you align the microprocessor connector on the left side of the
board and press down firmly on the metal plate that is directly over the connector. When the microprocessor module is seated, all four corners
must be at the same height. If one or more corners of the module are higher than the others, the module is not seated correctly.
Pay attention to the corner without the mounting screw. If necessary, apply pressure directly over this corner to ensure that the module is fully
seated.
Rotate the arm of the thermal cooling assembly into place and replace the microprocessor shield. Replace the two 3-mm screws that secure the
thermal cooling assembly arm and shield to the microprocessor module. Tighten the three captive screws on the corners of the shield to secure the
microprocessor module and shield.
Display Assembly
Figure 13. Display Assembly
1 Captive screws (3)
2 Thermal cooling assembly arm
3 Microprocessor module
4 White marks on the microprocessor board
5 Microprocessor shield
6 3-mm screws (2)
Figure 12).