Dell 200, 4100, 180 service manual Pin-1 Identification

4. Lift the microprocessor out of its socket.

To install the replacement microprocessor/heat sink assembly, ensure that the micro- processor release lever is in its fully vertical position to allow the microprocessor pins to easily slip into the socket. When the microprocessor/heat sink assembly is in place, rotate the microprocessor release lever to its horizontal position. Hook the micro- processor securing clip over the socket tab nearest the front of the system board, and then snap it over the tab on the back of the socket.

pin-1 corner

(gold finger and bevel)

Figure 4-23. Pin-1 Identification

NOTE: Pin 1 on the microprocessor is located on the corner with the largest bevel. The pin-1 hole in the microprocessor socket is located on the corner where the holes are in a diagonal pattern.

If you are installing a new microprocessor and heat sink, place the thermal interface pad that comes with the replacement microprocessor between the microprocessor and the heat sink before reinstalling the securing clip.

4-22 Dell PowerEdge 4100/180 and 4100/200 Systems Service Manual