Sun Microsystems Datacenter Switch 3456 Installation Manual page 79

FIGURE 8-3
5. Continue to slide the midplane stiffener in, maintaining a perpendicular
orientation.
When the midplane stiffener has almost seated, stop.
6. Rotate both retainer levers to the unlocked position.
7. Verify that the end of the midplane stiffener properly contacts the midplane
crossbar.
8. Have your assistant press the midplane stiffener into position.
9. Rotate both retainer levers to the locked position.
10. Slowly rotate each retainer drive screw clockwise, until resistance is felt, then
stop.
11. Simultaneously rotate the retainer drive screws clockwise, stopping at each half
turn, to maintain synchronization.
During this time, the levers might have moved from the locked position. Move
the levers back to the locked position and continue.
12. Continue synchronized rotation until great resistance is felt, then stop.
13. Verify that the midplane stiffener is properly seated against the midplane
crossbar.
64 Sun Datacenter Switch 3456 Installation Guide • December 2008
Installing Midplane Stiffener