IBM RS/6000 7043 43P Series Supplemental Service Manual

Also see for RS/6000 7043 43P Series: User guide User guide Setup instructions Service guide

Contents

5. Locate and unplug the fan and disconnect the fansink assembly power cable fromthe CPU fansink connector (J26).Note: There are two possible fansink connections for this system board: right-anglefinger tabs, and wire springs.Fansink Location6. To remove a fansink with right-angle finger tabs, unclip the heatsink by pushingdown 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 existingCPU chip on the systemboard.7. To remove a fansink with wire springs, push down and away on the wire loop todisengage the fansink assembly. Gently lift the fansink vertically up and off withoutrocking the fansink.Attention: While removing the closed loop fansink, severe damage may occurwhich would require replacing the entire system board assembly. Tominimize the risk for system damage, be sure to perform the aboveoperationno less than 30 seconds after powering off the system, whilethe heatsink is still hot. Warm adhesive between the heatsink and CPUchip will be less likely to pull the aluminum cap off the chip.Chapter 1. 7043–140 and 7043–150 Fansink Removal and Replacement Procedures 5