Cisco WS-C2950-24 Hardware Installation Guide - Page 201
Replacing the Cisco 3900 Series Air Filter, Removing the Cisco 3900 Series Router Bezel
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Chapter 5 Installing and Upgrading Internal Modules and FRUs Figure 5-36 1 Removing the Cisco 3900 Series Router Bezel Replacing a Fan Tray or Air Filter SYS ACT SYS PWR1 AUX PWR1 SYS PWR2 AUX PWR2 Cisco 3900 Series 1 Bezel Step 3 Step 4 Step 5 Loosen the four captive screws on the fan tray. Pull out the fan tray. Insert the replacement fan tray, and tighten the four captive screws as shown in Figure 5-37. Figure 5-37 Cisco 3900 Series Fan Tray Replacement 250920 250921 Step 6 Snap the bezel in place. Replacing the Cisco 3900 Series Air Filter Perform the following steps to replace the air filter: Step 1 Step 2 Read the "Safety Warnings" section on page 5-2 section and disconnect the power supply before you perform any module replacement. Unsnap the bezel by pulling it straight out from the chassis. See Figure 5-38. OL-18712-03 Cisco 2900 Series and 3900 Series Hardware Installation Guide 5-49