Dell Inspiron 4000 - Manual (Page 36)

Microprocessor Thermal Cooling Assembly
Removing the Microprocessor Thermal Cooling Assembly
1. Remove the hard drive assembly .
2. Turn the computer over and remove the keyboard assembly .
3. Remove the display assembly .
4. Loosen the four captive screws securing the microprocessor thermal cooling assembly.
5. Remove the microprocessor thermal cooling assembly from the system board assembly.
6. Remove the two M2.5 x 5-mm screws and the one M2 x 3-mm screw that secure the hybrid cooling fan to the system board.
7. Disconnect the fan power cable from the system board interface connector and remove the hybrid cooling fan.
NOTICE: Disconnect the computer and any attached devices from electrical outlets, and remove any installed batteries.
NOTICE: To avoid ESD, ground yourself by using a wrist grounding strap or by touching an unpainted metal surface on the computer.
NOTICE: Read " Preparing to Work Inside the Computer " before performing the following procedure.
HINT: The fan power cable is long and can be pulled out from under the EMI shield to provide access to the connector.
CAUTION: Do not block the keyboard screw hole when reinserting the fan cable.