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Hybrid Cooling Fan

Dell™ Latitude™ C540/C640 Service Manual

Removing 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.

1. Remove the hard drive.
   
   
2. Remove the keyboard.
   
   
3. Remove the display assembly.
   
   
4. Remove the palm rest.
   
   
5. Remove the microprocessor thermal cooling assembly.
   
   
6. Remove the two M2.5 x 5-mm screws and one M2 x 3-mm screw that secure the hybrid cooling fan to the system board.
   
   

1	system-board interface connector	5	M2 x 3-mm screw (1)
2	fan power cable	6	M2.5 x 5-mm screws (2)
3	spring fingers	7	hybrid cooling fan
4	keyboard screw hole

7. Disconnect the fan power cable from the system-board interface connector and remove the hybrid cooling fan.
   
   

NOTE: The fan power cable is long, and can be pulled out from under the EMI shield to provide access to the connector.

NOTICE: Do not block the keyboard screw hole when reinstalling the fan. Route the fan power cable under the spring fingers and behind the keyboard screw hole to prevent damage to the fan power cable.

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