Removing And Replacing Model 3921Plus Modems - Paradyne Comsphere 3920Plus Installation And Operation Manual

Removing and Replacing Model 3921 Plus Modems
It is not necessary to power down the carrier to remove and replace a Model 3921Plus 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.
3920-A2-GN31-10
Figure 2-3. Circuit Pack Lock
If the Model 3921 Plus is removed from the carrier, always use a
ground strap when handling the modem. Always store the
Model 3921 Plus in an antistatic bag when it is removed from
the carrier.
April 1995
CAUTION
Modem Installation
2-11