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COMSPHERE 3800 Series Modems
2-8 September 1998 3810-A2-GB30-30
Removing and Replacing
Model 3810 and
Model 3820 Modems
To remove and replace a Model 3810 or Model 3820
modem, perform the following steps:
1. Make sure the modem is offline, and press the
modem’s rear panel power switch to the Off
position.
2. Disconnect the power cord from the ac power
outlet, and then from the connector on the rear of
the modem.
3. Disconnect the dial and leased-line modular cords
from the modem’s rear panel.
4. Disconnect the DTE interface cable from the
modem’s rear panel.
If the modem is to be removed for service, return
it using the procedures on page A in the front of
this document for contact information.
5. Install the replacement modem as described in the
Model 3810 or Model 3820 Modem Installation
section of this chapter, and configure it the same
way as the modem being replaced.