Cisco 7500 Series Replacing Manual page 27

Figure 18
Dual arbiter
Chassis
interface
The CI is a printed circuit board mounted to the noninterface processor side of the backplane, behind
the backplane maintenance cover. (See Figure 18.) On the back of the CI (backplane side) is a
connector that plugs directly into the backplane. The edge connector is for diagnostics at the factory
and is not used.
Removing the CI
Follow these steps to remove the CI:
Step 1
Step 2
Step 3
Caution
are below this panel and two are above it. To avoid damaging CI components, do not hit the CI
against the chassis panel.
Location of the CI with Cover Removed
Turn OFF the power switch on each power supply and disconnect the power cable from
each power source and power supply.
Attach an ESD-preventive strap between you and an unpainted chassis surface.
The CI is held in place by a connector, which is connected to the backplane, and four
screws. Use a number 1 Phillips screwdriver to remove the four screws.
Access to the CI is partially blocked by a chassis panel. (See Figure 18.) Two of the screws
Replacing the Chassis Interface (CI) Board in the Cisco 7500 Series Chassis
Replacing the CI in the Cisco 7513
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