Mircom TX3-2000-8U-C - TX3-NSL-8 M Main Controller Board Wiring

66 TX3 Telephone Access System Installation and Operation Manual
NSL Relay Cabinet Installation and Wiring
5.3 Wiring the TX3-NSL-8M Main Controller Board
The TX3-NSL-8M NSL Main Controller Board has both ribbon cable sockets
and screw terminals.
Attention: High voltages are present on this board during the ringing of suite
telephones.
Figure 34 shows the general layout of the TX3-NSL-8M Main Controller board
components.
Figure 34. TX3-NSL-8M Main Controller Board
5.3.1 Connectors
USB. Computer connection for firmware download.
P1 and P2. Not used.
P3. Not used.
SW1
OFF
USB
16V AC
IN
JW1
JW2
R
T
Telephone Line
from Lobby Pane
l
Main Controller
Board
R
T
R
T
Res.
Co.
P4
P5
P3
P6
T
X3-NSL-8M Relay Control Unit
Expansion Connectors
TX3-NSL-8M Main Controller Board
ON
P1 P2
SW2
TS5
TS4