Replacing the Processor Chip

You’ll find it easier to remove your existing microprocessor if you remove the option card connector board. Refer to page 3-17 to remove the option card connector board, then follow these steps to replace the processor chip:

1.Use the illustration on page 3-5 to locate the microprocessor on the system board.

Caution

Make sure you ground yourself by touching the metal surface on the inside of the computer’s back panel before you touch the processor chip. Then remain as stationary as possible while you install it. Do not touch the pins on the processor chip. Handle the microprocessor only by the edges of its case.

2.If you use a chip puller, position the puller between the processor chip and the socket.

You can also use a small, flat-edged screwdriver instead of a chip puller. Carefully wedge the tip of the screwdriver between the processor chip and the socket. Gently turn the screwdriver until the chip begins to separate from the socket. Move the screwdriver to another side of the processor chip and again turn it until the chip separates from the socket. Keep doing this until you can lift the processor chip straight up from the socket.

Caution

Your 486SX/25 microprocessor is soldered onto an adapter board that is seated in the microprocessor socket. Make sure you position your chip puller or screw driver just above the socket to avoid damaging the adapter board.

3-26 Installing and Removing Options