Bell System CS106 Bedienungsanleitung PDF herunterladen (Seite 21)

CS106 Combined Door Entry and Coded Access

Troubleshooting

Use the table below to determine the most probable cause of a fault condition.

Refer also to page 26 for problems with the coded access system (C106

Keypad).

Telephone Problems

Symptom Possible Cause/Remedy

Low Speech Volume

Ž Volume adjustment required on speech

unit.

Ž Speech unit is not tight against the

panel grill.

Ž Panel grill is blocked

Ž More than one telephone is off the

hook.

Ž Speech unit supply voltage is low.

Check 10V - 15V across ‘C’ and ‘H’.

CS106 Combined Door Entry and Coded Access

Symptom Possible Cause/Remedy

Constant tone/feedback

when in use.

Ž Volume adjustment required on the

Speech Unit.

Ž Speech Unit is not tight against the

panel grill.

Ž ‘O’ connection between Speech unit

and telephone is open circuit.

Ž Entrance panel and telephone are too

close together.

Ž The entrance panel is surrounded by

reflecting walls.

Ž Panel grill is blocked.

No speech when the phone

is buzzed

Ž Wiring fault on the speech signal

connections ‘R’ or ‘T’: ‘R’ carries the

phone microphone signal to the speech

unit; ‘T’ carries the Speech unit

microphone to the phone.

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Bell System CS106 Bedienungsanleitung Seite 21