IBM Power System IC922 Manual page 113

DANGER: Multiple power cords. The product might be equipped with multiple AC power cords
or multiple DC power cables. To remove all hazardous voltages, disconnect all power cords and
power cables. (L003)
(L005)
CAUTION: Hazardous energy present. Voltages with hazardous energy might cause heating
when shorted with metal, which might result in splattered metal, burns, or both. (L005)
6. If the power distribution board needs to be removed, if the system backplane needs to be removed, or
if DIMM 0 needs to be installed, removed, or replaced; partially remove the two power supplies. Pull
them out about 2.5 cm (1 in); you do not need to remove them from the system. For instructions, see
"Removing a power supply from the 9183-22X system" on page 115.
7. Loosen the cover screw (B) at the rear of the system as shown in the following figure.
Installing and configuring the 9183-22X 99