TEMA TELECOMUNICAZIONI SRL
Doorphone AA-539
MAS-AA539-REV02EN
Page 26 of 57
8.3.2. Connecting the system expansion AA-539K
Once that the rear metallic box of the system
is arranged in the wall, take the front panel
with the electronic board, insert the two
transparent plastic pins present on frame into
the appropriate holes on the wall box and get
ready to connect the wires to the terminal
blocks. Make sure that all cables, including
LAN, have not yet been under tension before
connecting them to the card. These
operations must be performed by a
specialized technician. Take the cables that
have been prepared by one of the outgoing
access on the base system and start
connecting. Remove, connect, and replace
the terminals according to the connections to
be made. To make the connections never
remove the system board from the front
panel
but
just
remove
the
insertion
connectors.
H
Jumper for internal heating circuit
L
Jumper for backlighting circuit
FC
Polarized connector for connection of the
expansion coming from AA-560 system
TBE3
Terminals block for the Twilight service keys
backlighting when controlled by the relay 2 of
the AA-560 base system and redistribution of
the command to the eventually AA-539R
expansions present in the plant.
For details of the connection of the signals on
terminal block TBE3, see section 8.5.9
