Bell System bellview Specifications download pdf (Page 24)

Bell View Video Entry System

Fault Finding

Speech Problems

Low speech volume ! Volume adjustment required on the Speech Unit,

see page 16 under SPEECH ADJUSTMENTS.

! Speech Unit is not tight against the panel grill.

! Panel grill is blocked.

! More than one active telephone is off the hook.

! Speech Unit supply voltage low. Check 10V-15V

across 'C' and 'H' on unit, after activating first.

Constant tone/feedback when in

use.

! Volume adjustment required on the Speech Unit,

see page 16 under SPEECH ADJUSTMENTS.

! ‘O’ connection between Speech unit and

telephone open circuit.

! Speech Unit is not tight against the panel grill.

! Entrance panel and telephone too close together.

! The entrance panel is surrounded by reflecting

walls.

! Panel grill is blocked.

Speech not audible when phone is

live.

! Low speech volume. To increase refer to page 16

under SPEECH ADJUSTMENTS.

! No / low supply to Speech Unit. Check 10V-15V

across 'C' (positive) and 'H' on the unit, after

activating first.

! Faulty 'R', 'O', or 'T' line.

No speech when the phone is

buzzed

! Check ‘Auto - Display’ DIP switch setting is ON.

Refer to page 14.

! No / low supply to ‘+’ and ‘-’ video supply at the

phone. Check 10V - 15V across connections.

! Wiring fault on the speech signal connections ‘R’

or ‘T’. ‘R’ carries the phone microphone signal to

the speech unit. ‘T’ the Speech unit microphone to

the phone.

! 2 Door Systems

Common call button wire connected to ‘+’ or ‘C’

instead of ‘B’ on the Switching Unit.

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Bell System bellview Specifications Page 24