Bell System BL106 User Manual download pdf (Page 43)

CS106/BL106 Combined Door Entry and Coded Access

43

Miscellaneous Problems

Symptom Possible Cause/Remedy

Telephone will not buzz.

 Faulty 'O' or 'I' line between power

supply and phone. Check 10.5V -

15V across ‘I’ and ‘O’ when called.

Telephone ‘DOOR’ button

does not operate release;

C106 test button does

operate the lock

 Missing connection to C106 Keypad

Exit + terminal.

 Fault on 'Z' or 'O' line.

Trades, Exit button or Fire

Switch inoperative.

 Time-Clock is not running or

incorrectly set (Trades button only).

 Check all connections to the EXIT

terminal on the C106.

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