IBM Power System 8247-42L Manual page 48

Figure 32. Removing dust and debris from the system processor socket
8. Remove the heat sink from the original system backplane.
a. Loosen the heat sink actuation screw by turning the supplied 5.5 mm nut driver (part number
43W3032) counterclockwise (A) until the screw becomes loose and moves freely as shown in
Figure 33 on page 31.
b. Grip the heat sink (B) by the grooves on opposing sides and remove it by lifting straight up.
c. Inspect the heat sink for any dust or debris on it. If you must remove dust or debris from the
heat sink, it must be done in another room or greater than 25 feet (7.62 meters) away from work
area.
d. Place the heat sink upside down on an Electrostatic Discharge (ESD) surface.
e. Repeat step 8 for the remaining heat sink.
30
System backplane