Sun Microsystems Datacenter Switch 3456 Installation Manual page 82

2. Slowly rotate each retainer drive screw counter-clockwise, until resistance is
felt, then stop.
3. Simultaneously rotate the retainer drive screws clockwise, stopping at each half
turn, to maintain synchronization.
4. Continue synchronized rotation until greater resistance is felt, then stop.
5. Rotate both retainer levers to the unlocked position.
6. Grasp the handles at both ends of the midplane stiffener and slowly pull it
from the chassis.
See .
FIGURE 8-5
Removing the Midplane Stiffener
FIGURE 8-5
7. Set the midplane stiffener aside.
Chapter 8 Installing Fabric Cards 67