Installation manual

11
Removing and Replacing Model 3911 Modems
CAUTION
If the Model 3911 is removed from the carrier, always use a ground
strap when handling the modem. Always store the Model 3911 in an
antistatic bag when it is removed from the carrier.
It is not necessary to power down the carrier to remove and replace a Model 3911 modem. Perform the following
steps:
1. Rotate the circuit pack lock until the release tab is exposed.
2. Press down on the release tab and pull the modem away from the carrier’s backplane.
Menu Tree
The following page provides a graphic representation of the general menu structure of the front panel or SDCP
display. Use the Menu Tree for reference when performing the modem’s various functions.