Bell System bellview Installation & Operation Manual page 25

Video Problems
Video picture impaired or
unsynchronised.
Entrance cannot be seen at night.
Picture does not appear when the
phone is buzzed.
Bell View Video Entry System
!
Some phone terminating slide switches have not
been set correctly. Refer to page 12.
!
Poor coaxial cable connection or screen not
connected.
!
Phone too close to a magnetic field, e.g.
transformer.
!
Coaxial cable running too close to mains cable.
!
Coaxial cable is not of 75S type.
!
Power not connected to Camera IR night
illumination. Connect '1' to '+' on Camera.
If the screen lights up:-
!
The necessary phone termination slide switch(s)
has not been set to 'HI'. Refer to page 12.
!
Fault on Video coaxial cable. Check 'M' and 'S'
connections.
!
No / low supply to Camera. Check 10V-15V across
Camera '+' and '-'.
!
Coaxial cable is not of 75S type.
If the screen does not light up:-
!
Check 'Auto - Display' DIP switch setting is ON.
Refer to page 14.
!
No / low supply to '+' and '-' video supply on
phone. Check 10V-15V present.
21