10 / 21
Safe Communications Ltd
March 2003
4. CONNECTION OF THE TELEPHONE SET
4.1
OPENING THE TELEPHONE SET
To gain access to the circuit board, unfasten the 4 fixing screws in the front cover of the case
using Allen key No 5.
4.2
CONNECTION OF THE TELEPHONE LINE
The connection of the unit to the telephone line is carried out on printed circuit board
WK140MLB with the plug-in connector reference « BR1 ».
Connect the telephone line to the terminals L1 and L2 of the connector « BR1 ».
BR1
L2
L1
LIGNE
TELEPHONIQUE
E
ARTHING THE TELEPHONE SET
Electrical earthing is carried out either externally via the earthing screw (situated at the
bottom of the case) indicated by the sign
⊥
or internally on the terminal
⊥
situated on the
« BR1 » connector on the telephone card WK140 MLB. A gas discharge tube is located on
the card, to discharge possible overloads to earth.
