bell
issimo
1 Way Video Entry System
PD-097 Issue 4
Installation and Operating Manual
Page 23 of 40
Speech Problems
Loud tone at the entrance
speaker. (Acoustic
feedback).
Volume controls set too high.
Broken Audio 1 or 2 wire in the cabling.
Intermittent or broken wire in Data A or B.
Videophone has reset; see power faults.
More than one entrance has SW2-
8 set to ‘Enable’
causing 2 entrances to become active on CCTV request.
Check model 61 is hard against the panel with no gaps.
Check model 61 speech unit is the right way round and
that the microphone hole in the speech unit lines up with
the hole in the panel.
Low volume speech in one
or both directions
Adjust pot on 61 speech unit marked A and with a
speaker symbol for volume at the panel.
Adjust pot on 61 speech unit marked B and with a
microphone symbol for volume at the phone.
If volume cannot be increased in one direction without
feedback, the volume in the other direction may have to
be reduced as a compromise.
Check model 61 is hard against the panel with no gaps.
Check model 61 speech unit is the right way round and
that the microphone hole in the speech unit lines up with
the hole in the panel.
No speech from
videophone to entrance.
Missing R core to door controller.
Broken Audio 1 or 2 connections.
No speech from entrance
to videophone.
Missing T core to door controller.
Broken Audio 1 or 2 connections.
