Clear-Com HB-704 - Manual (Page 18)

H B - 7 0 2 / H B - 7 0 4 T W O - A N D F O U R - C H A N N E L H E A D - 3 - 4
Table 3-1: Troubleshooting Tips
The call signal does not
function. (1) Excessive DC loading of
intercom line. (1) 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
advice.
(2) Far too many terminations on the
intercom line. (2) Check all main stations and
power supplies to make sure each
intercom channel is terminated at
only one point.
(3) Plug P1 missing on circuit board. (3) Plug P1 must be installed in the
J1 jack if the EB-4W or EB-TW
options are not used.
SYMPTOM CAUSE SOLUTION