Cisco 7500 Series Replacing Manual page 12

Replacing the CI in the Cisco 7505
Figure 6
Guide pin
hole
Four 20-mm
M-3 screws
Step 3
Caution
secure the backplane cover to the backplane. Do not remove any adjacent screws.
Step 4
Note
sections, and then to replace the backplane cover, proceed to Step 5, which follows.
Step 5
Step 6
12 Replacing the Chassis Interface (CI) Board in the Cisco 7500 Series Chassis
Removing and Replacing the Backplane Cover
Six 10-mm M-3 screws on top, five on bottom
Remove the fifteen, 10-mm M-3 Phillips that secure the backplane cover to the backplane.
These screws are located around the flange of the backplane cover (two on each side, six
along the top, and five along the bottom). (See Figure 6.)
To prevent loosening the backplane from the chassis, remove only those screws that
With all screws removed, carefully guide the backplane cover out and away from the
backplane, arbiter, and CI. (See Figure 6.)
Depending on the replacement procedures you need to perform, refer to the appropriate
To replace the backplane cover, carefully guide the cover into the chassis opening over the
arbiter and CI, over the guide pins on the backplane (see Figure 6), and align the screw
holes in the cover with the holes on the backplane and standoffs.
Loosely install the fifteen screws around the flange of the backplane cover. (See Figure 6.)
Do not tighten these screws.
Two 10-mm
M-3 screws
each side
Four 20-mm M-3 screws
Guide pin
hole