User manual

Wide Bank 28 DS3 - Release 2.4 July 2004 10-11

Maintenance

Turning Off Unused or Unterminated Low-Speed Channels

2. Remove the Controller card (A or B) by lifting the card ejector latches and sliding the card out

of the chassis housing.

3. Ensure that the replacement card is positioned correctly in the guide rails, then carefully slide

the card into the slot.

4. Press the card ejector latches in toward the card until the connector on the card mates with a

matching connector on the backplane.

NOTE: If the faceplate is a fan faceplate, in the following step ensure that the fan power

connectors are aligned and seated on the Controller board power connectors.

5. Replace the faceplate and tighten the two fastening screws. Do not overtighten. Carrier Access

recommends a maximum torque of 8 to 10 inch-pounds.

Turning Off Unused or Unterminated Low-Speed

Channels

For continued FCC Part 15A and NEBS compliance, unused and unterminated low-speed channels

must be turned off by issuing the CLI ds1 or ls command:

(A:Working) > ds1 [n|range|all] disable

(A:Working) > ls [n|range|all] disable

NOTE: For details on ds1 and ls commands, see CLI Commands and Messages on

page 8-1.