User manual

Clear-Com Intercom Systems KB-211/KB-211GM Two-Channel Speaker Stations

Rev. A

• The call signal does not function.

Scenario 1

Excessive DC loading of intercom line.

Solution: Remove any audio transformers or other equipment that may be

connected across the intercom line. If equipment other than Clear-Com

intercom equipment must be connected to the intercom line, please contact

Clear-Com application or service personnel for information or

recommendations.

Scenario 2

Far too many terminations on the intercom line.

Solution: Check all main stations and power supplies to make sure each

intercom channel is terminated at only one point.

Scenario 3

Plug P1 is missing on circuit board.

Solution: Plug P1 must be installed in the J1 jack if the EB-4W or EB-TW

options are not used.