Service manual

GS80 Component Removal and Replacement 6-5
Under most circumstances, when replacing FRUs in any drawer, the drawer must
have its 48V power off. Only two FRUs in the GS80 drawer can be hot swapped:
the CPU and a local I/O riser if the operating system supports hot-swap and they
are in the top or single drawer. The remaining FRUs are cold-swap or removed
when AC is not present. (Cold-swap is defined as a state where Vaux and AC are
present but 48V and logic voltages are not. See Section 4.3.)
To access the QBB compartment of a single or top drawer, the front door must be
open, the drawer(s) pulled out of the cabinet, and the drawer cover removed.
To pull the drawer(s) from the cabinet, remove the Phillips head screws
holding the drawers to the cabinet frame and pull the drawers forward until the
rails are fully extended. There are no latches.
To remove the cover, unscrew the two captive screws that hold the cover to the
drawer
, tilt the cover up, and lift it off the drawer.
Note that the safety stabilizer is long enough to prevent the cabinet from tipping
over when the drawer is pulled out of the cabinet.