IBM Power System 5802 Instruction Manual page 23

h. You must install either the cable management bracket or the retention brackets. Determine whether
to install the cable management bracket or the retention bracket by reviewing the following
information:
v Use the cable management bracket to secure the 5802 or 5877 expansion unit to the rack if you
intend to provide extensive organization for the cables and cords connecting to the expansion
unit. The cable management bracket contains a shelf that rotates into the following positions, as
shown in Figure 10.
– The shelf is rotated up to the highest position (1) to permit service of the 5802 or 5877
expansion unit. Since this position requires that the top edge of the shelf side brackets (A) be
rotated fully below the plungers on the stationary arms (B), the shelf is not locked in this
position.
– The shelf is rotated to a level position (2) when no hardware service is being performed on
the 5802 or 5877 expansion unit or adjacent hardware. The shelf side brackets (A) contain
holes into which the plungers on the stationary arms (B) are inserted, enabling the shelf to
lock in this position.
– The shelf is rotated down to the the next lower position (3) to permit service of hardware
installed in the space directly above the 5802 or 5877 expansion unit. The shelf side brackets
(A) contain holes into which the plungers on the stationary arms (B) are inserted, enabling
the shelf to lock in this position.
– The shelf is rotated down to the lowest position (4) if additional clearance space is needed to
close the rear door of the rack. Since this position requires that the bottom edge of the shelf
side brackets (A) be rotated fully above the plungers on the stationary arms (B), the shelf is
not locked in this position.
Figure 10. Positions of the cable management bracket rotation
Note: The cable management bracket is designed to function in racks with limited rear space.
Following installation, it is normal for there to be limited clearance space between the bracket
shelf and the rear door when the door is closed. It is normal for some contact to occur when
doors containing shock padding are closed. However, if the door is prevented from full
closure due to the thickness of certain padding features, such as the acoustic rear door, the
shelf must be rotated to the lowest position (4) to allow the door to close.
Installing the 5802 and 5877 expansion units: Details
11