IBM Power Systems 7063-CR1 Service Manual page 32

Figure 12. Removing a fan
5. To disconnect a fan cable, release the connector clip (B) and carefully pull up the connector (A) from
the system backplane, as shown in Figure 13 on page 17. Do not pull on the wires. Feed the cable
through the fan holder.
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Power Systems: Servicing the 7063-CR1 Hardware Management Console system