Cisco 7500 Series Replacing Manual page 13

Step 7
Step 8
Step 9
Step 10
Step 11
Step 12
This completes the backplane cover removal and replacement procedure.
Removing and Replacing the CI
The CI (shown in Figure 7) is a printed circuit board mounted to the noninterface processor side of
the backplane, behind the backplane cover. On the back (backplane side) of the chassis are four
standoffs and a connector that plugs directly into the backplane. When the backplane cover is in
place, four standoff screws extend through the backplane cover, through each corner of the CI and
into the standoffs, to keep both the CI and backplane cover in place.
Figure 7
Standoff
screw holes
Note
chassis cover panel, the fan tray, the power harness cover, the power harness, and the backplane
cover. If not, refer to the appropriate procedures in this section to remove these items.
Loosely install the eight standoff screws in the face of the backplane cover. (See Figure 6.)
Verify that the cover is aligned; then tighten all screws that secure the backplane cover.
To replace the fan tray, follow Steps 8 through 12 in the section "Removing and Replacing
the Fan Tray" on page 7.
Reattach the power harness plug to the power harness receptacle. The harness plug and
backplane receptacle are polarized with notches at the top of both guide tabs (top and
bottom) on the plug. Ensure that the plug is fully seated in the receptacle.
To replace the power harness cover, follow Steps 6 through 10 in the section "Removing
and Replacing the Power Harness Cover and Power Harness" on page 10.
To replace the cover panel, follow Steps 3 through 6 in the section "Removing and
Replacing the Chassis Cover Panel" on page 6.
Chassis Interface (MAS-7500CI=)
Chassis interface
Replace the CI only if it fails. This procedure assumes that you have already removed the
Replacing the Chassis Interface (CI) Board in the Cisco 7500 Series Chassis
Replacing the CI in the Cisco 7505
Standoff
screw holes
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