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Microprocessor Module

Dell™ XPS M140 Service Manual

  Removing the Microprocessor Module

  Replacing the Microprocessor Module

Removing the Microprocessor Module

CAUTION: Before you perform any of the procedures in this section, follow the safety instructions in the Product Information Guide.

NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such as the back panel) on the computer.

NOTICE: Handle the microsprocessor module with care. Hold the microsprocessor module by its edges and do not touch the processor die (the small chip in the center of the module).

1. Follow the instructions in Preparing to Work Inside the Computer.
   
   
2. Loosen the three captive screws securing the microprocessor module cover, then remove the cover and set it aside.
   
   

1

microprocessor module cover

2

captive screws (3)

NOTICE: To ensure maximum cooling for the microprocessor, do not touch the heat transfer areas on the microprocessor thermal-cooling assembly. Oils in your skin can reduce the heat transfer capability of the thermal pads.

3. Remove the microprocessor thermal-cooling assembly (see Removing the Microprocessor Thermal- Cooling Assembly).
   
   

NOTICE: To avoid damaging the microprocessor, hold the screwdriver so that it is perpendicular to the microprocessor module when turning the cam screw.

4. To loosen the ZIF-socket cam lock, use a small, flat-blade screwdriver to rotate the ZIF-socket cam screw counterclockwise until it comes to the cam stop.
   
   

NOTE: The ZIF-socket cam screw secures the microprocessor module to the system board.

1	microprocessor pin-1 corner	3	processor die	5	ZIF-socket cam screw
2	microprocessor module	4	ZIF socket	6	screwdriver

NOTICE: When removing the microprocessor module, pull the module straight up and out of the ZIF socket. Exercise care not to bend the pins on the microprocessor module.

5. Lift the microprocessor module straight up and out of the ZIF socket.
   
   

Replacing the Microprocessor Module

CAUTION: Before you perform any of the procedures in this section, follow the safety instructions in the Product Information Guide.

NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such as the back panel) on the computer.

1. Follow the instructions in Preparing to Work Inside the Computer
   
   

NOTICE: Handle the microsprocessor module with care. Hold the microsprocessor module by its edges and do not touch the processor die (the small chip in the center of the module).

2. Follow the instructions in Removing the Microprocessor Module.
   
   

NOTICE: Ensure that the cam lock is in the fully open position before seating the microprocessor module. Seating the microprocessor module properly in the ZIF socket does not require force. A microprocessor module that is not properly seated can result in an intermittent connection or permanent damage to the microprocessor and ZIF socket.

3. Align the pin-1 corner of the new microprocessor module with the pin-1 corner of the ZIF socket, and insert the microprocessor module.
   
   

NOTE: The pin-1 corner of the microprocessor module has a triangle that aligns with the triangle on the pin-1 corner of the ZIF socket.

NOTE: Gently press down on the substrate on which the processor die is mounted to ensure the microprocessor module is properly seated.

When the microprocessor module is properly seated, all four corners of the module are aligned at the same height. If one or more corners of the module is higher than the others, the module is not properly seated.

NOTICE: To avoid damaging the microprocessor, hold the screwdriver so that it is perpendicular to the microprocessor module when turning the cam screw.

4. Tighten the ZIF-socket cam lock by turning the cam screw clockwise to secure the microprocessor module to the system board.
   
   
5. Replace the microprocessor thermal-cooling assembly (see Replacing the Microprocessor Thermal- Cooling Assembly).
   
   
6. Replace the microprocessor module cover.
   
   
7. Update the BIOS using a flash BIOS update program floppy disk or CD. For instructions on how to flash the BIOS, see BIOS Updates.
   
   

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