48 | Removing and Replacing Componentsw w w . d e l l . c o m | s u p p o r t . d e l l . c o m To remove and replace E300 RPMs and line cards:To remove and install an SFM:Removing and Replacing the Air FilterThe E300 air filter is hot-swappable. You do not need to turn the power off to the chassis to replace afilter. Filters should be inspected monthly, cleaned, and replaced only if it is damaged. See Figure 10-2.Step Task1 Unplug the network interface cables connected to the line card or RPM.2 Loosen the captive screws and pull the ejector levers simultaneously toward you to disengage the backplaneconnections.3 If you are installing a line card, follow these procedures:• If you are hot swapping (replacing the line card with the same card type), no additional configuration isrequired.• If you are installing a different line card type, enter the configure the following commands:no linecard number to remove the old line card configuration where number is a slot number.• If you are replacing the line card with a blank panel, delete the line card information from the configuration byentering:no linecard number4 Slide the card out of the slot.5 If you are immediately installing a replacement card, align the new card with the guide and gently slide the cardinto the slot until you feel the connectors engage with the chassis backplane. The software will detect the new linecard and enter it in the running configuration.If you are not planning to install a new card immediately, install a blank panel.6 Enter the copy running-config file-url command to save the configuration.Step Task1 Loosen the captive screws and pull the ejector lever towards you to disengage the backplane connections.2 Slide the card out of the slot.3 Hold the SFM by the edges. Avoid touching the printed circuit board and connector pins. Extend the card leverbefore you insert the card into the slot.Align the new SFM with the guide and gently slide the card into the slot until you feel the connectors engage withthe chassis backplane.4 Rotate the lever to seat the backplane connectors and SFM in place.5 Secure the SFM in place by tightening the captive screw.