Chapter 7 Maintaining the Router
Removing and Replacing a Power Bus Board Fuse
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Cisco 12016, Cisco 12416, and Cisco 12816 Router Installation and Configuration Guide
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Use the following procedure to replace a fuse on the power bus board.
Step 1 Power off the router (see Powering Off the Router, page 7-2).
Warning
The router must be powered down before a fuse can be removed and replaced.
Step 2 Remove the power bus boar d MBus access cover by lo osening the four capt ive
screws (Figure 7-57).
Figure 7-57 MBus Controller Access Cover
Step 3 Remove the fuse from the fuse holder using a non-conducting fuse extraction tool
(Figure 7-58).
Step 4 Insert the replacement fuse using the fuse extraction tool to hold the replacement
fuse, align the fuse with the opening in the fuse holder.
Step 5 Reinstall the MBus access cover.
Step 6 Power on the router and return it to service (see Powering On the Router and
Observing the Boot Process, page 4-4).
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Back panel of chassis MBus access cover
Captive screws
(2 on each side
of access cover)