8.If you removed the option card connector board, see

page 3-18 for instructions on replacing it. Then replace any option cards you removed.

lnstalling a Heat Sink

If you are installing a 486DX2/50 or a 486DX2/66 processor, you must install an EG&G heat sink (669-52AB) on the processor chip. Follow the instructions above to install the processor chip. Then follow these steps to install the heat sink:

1.Set the heat sink on top of the processor chip.

2.Place the retaining clip that came with the heat sink over the corresponding notches in the heat sink, as shown below.

retaining clip

heat sink

microprocessor

3.Pull the edges of the retaining clip over the processor chip until they secure the heat sink to the processor chip. You may have to use a small flat-head screwdriver to do this.

3-28 Installing and Removing Options