Replacing the Chassis Interface (CI) Board in the Cisco 7500 Series Chassis 11
Replacing the CI in the Cisco 7505
Step 6
To replace the power harness cover, hold the cover with one hand, with the tab on the
bottom and the open side facing away from you. Tilt the top of the panel back slightly
(toward you).
Step 7
Insert the tab on the bottom of the cover into the slot in the chassis floor. (See Figure 5.)
Step 8
While pushing the cover downward slightly to keep the bottom tab in the slot, push the top
of the cover back over the harness wires until the sides are flush against the backplane
cover. Ensure that all of the harness wires are under the cover.
Step 9
Insert the M-3 screw through the top of the harness cover, and use a number 1 Phillips
screwdriver to tighten it. (See the cutaway in Figure 5.)
Step 10
To replace the cover panel, follow Steps 3 through 6 in the section “Removing and
Replacing the Chassis Cover Panel” on page 6.
This completes the power harness cover removal and replacement procedures.
Removing and Replacing the Backplane Cover
The backplane cover provides EMI and ground protection for the backplane, the arbiter, and the CI.
To access these components, you must remove the backplane cover. You need number 1 and
number 2 Phillips screwdrivers to remove the backplane cover screws. Following is the procedure
for removing and replacing the backplane cover.
Note
This procedure assumes that you have already removed the chassis cover panel, the fan tray,
the power harness cover, and the power harness. If not, refer to the appropriate sections in this
publication to remove these items.
Step 1
Attach an ESD-preventive strap between you and an unpainted chassis surface.
Step 2
With the fan tray removed, remove the eight, 20-mm M-3 standoff screws that secure the
backplane cover to the arbiter and CI standoffs. These screws are located on the face of the
backplane cover. (See Figure 6.)
