IBM Power System Series Manual page 160

Figure 136: Tightening the center load screw on the heat sink
27. Replace the processor voltage regulator modules or processor voltage regulator module fillers in
locations P1-C13, P1-C16, P1-C17, and P1-C20.
a) With the levers (A) in the open position, hold the voltage regulator module or filler by its levers and
lower the voltage regulator module or filler into its slot in the system. Refer to the following image.
b) Gently push the voltage regulator module or filler into its connector.
c) Rotate the levers in the direction that is shown and press down on the latches to secure the
voltage regulator module or filler in its slot.
d) Repeat steps "27.a" on page 156 through "27.c" on page 156 to replace the remaining processor
voltage regulator modules or fillers.
156 Power Systems: Temple's Zeppelin procedures for install, remove, replace