3 Carefully slide the replacement fan module into the router, as shown in
the following figure
.
Caution
Do not slam the fan module into the router.
Figure 58: Installing a Fan Module
4 Align and fully tighten the captive retaining screws.
Replacing Optional Ports
Before you replace a port option card in slot A or slot B on the E4G-400 router, have the following items
on hand:
•
ESD-preventive wrist strap
•
1/2-inch flat-blade screwdriver
You can replace a port option card without powering down the router. However, you will need to reboot
the router to initialize the newly installed card.
1 Attach an ESD-preventive wrist strap to your wrist and connect the metal end to an appropriate
ground point on the rack.
2 Completely loosen the captive retaining screws and slide the installed option card out of the router,
as shown in the following figures.
Figure 59: Removing a Port Option Card: Slot A
Maintaining Your Equipment
E4G Routers Hardware Installation Guide
72
