5.Locate and unplug the fan, and disconnect the fansink assembly power cable from the CPU fansink connector (J26).

Note: There are two possible fansink connections for this system board: right-angle finger tabs, and wire springs.

Fansink Location

6.To remove a fansink with right angle finger tabs, unclip the heatsink by pushing down and away on the fingertab. Remove the fansink assembly and discard.

Note: Do not wipe off the remaining thermal grease from the top of the existing CPU chip on the system board.

7.To remove a fansink with wire springs, push down and away on the wire loop to disengage the fansink assembly. Gently lift the fansink vertically up and off without rocking the fansink.

Attention: While removing the closed loop fansink, severe damage may occur

that would require replacing the entire system board assembly. To minimize the risk for system damage, be sure to perform the above operationno less than 30 seconds after powering off the system, while the heatsink is still hot. Warm

7-147046 Model B50 Service Guide

Page 158
Image 158
IBM B50 manual Fansink Location