Replacing a Fan Module

To remove and replace the fan module in an E4G-400 router, you need a 1/2-inch flat-blade screwdriver.

Caution

Have the replacement fan module on hand before you begin, so that you can finish the replacement procedure promptly. The router can overheat if it is left without cooling for an extended period.

1. Completely loosen the captive retaining screws on the fan module.
2. Slide the fan module out of the router, as shown in the following figure, and set it aside.
   

   Removing a Fan Module

   
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.

   

   Installing a Fan Module

   
4. Align and fully tighten the captive retaining screws.