Cisco 7500 Series Replacing Manual page 10

Replacing the CI in the Cisco 7505
Removing and Replacing the Power Harness Cover and Power Harness
You must remove the power harness cover to access either the power supply or the CI. A single M-3
Phillips screw secures the power harness cover to the backplane cover.
Warning
the power cord. (For a translation of this safety warning, refer to the section "Translated Safety
Warnings" on page 32.)
Follow these steps to remove and replace the power harness cover:
Step 1
Step 2
Step 3
Figure 5
Step 4
Step 5
Note
the power harness and power harness cover, proceed to Step 6, which follows.
10 Replacing the Chassis Interface (CI) Board in the Cisco 7500 Series Chassis
Before working on a system that has an on/off switch, turn OFF the power and unplug
Turn OFF the system power switch and unplug the power cable from the power source.
To remove the chassis cover panel, follow Steps 1 and 2 in the section "Removing and
Replacing the Chassis Cover Panel" on page 6.
Use a number 1 Phillips screwdriver to remove the M-3 screw that secures the top of the
harness cover to the backplane. (See the cutaway in Figure 5.)
Removing the Power Harness Cover
Removing power harness cover
Holding the cover with one hand, tilt the top of the cover back toward you, then pull it
upward slightly so that the tab clears the slot in the chassis floor.
When the tab clears the slot, pull the cover straight back off the harness and out of the
chassis.
Move on to the required procedure, depending on the work you need to do. Then to replace
Power harness
Arbiter/chassis
cover
interface board
cover
Power supply
Fan tray