Replacing the Chassis Interface (CI) Board in the Cisco 7500 Series Chassis 13
Replacing the CI in the Cisco 7505
Step 7
Loosely install the eight standoff screws in the face of the backplane cover. (See Figure 6.)
Step 8
Verify that the cover is aligned; then tighten all screws that secure the backplane cover.
Step 9
To replace the fan tray, follow Steps 8 through 12 in the section “Removing and Replacing
the Fan Tray” on page 7.
Step 10
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.
Step 11
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.
Step 12
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 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
Chassis Interface (MAS-7500CI=)
Note
Replace the CI only if it fails. This procedure assumes that you have already removed the
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.
H2877
Chassis interface
Standoff
screw holes
Standoff
screw holes