Controller Board Connectors - Bottom; Figure 21 Controller Board Connectors - Bottom - Mircom TX3 Series Installation And Operation Manual

JW8. JW8 defines the operating state of the door strike relay as normally open or
normally closed. A jumper wire connects to either the normally open (position 2
- top) or normally closed pin (position 1 - bottom). The default setting is normally
open (position 2 - top).
JW9 and JW10. If there are problems with RS-485 communication, close both
JW9 and JW10 on either the first or last controller connected by RS-485. By
default these jumpers are open.
JW11: Leave open. This is the default setting.
4.2

Controller Board Connectors - Bottom

Figure 21 shows the connectors at the bottom of the Lobby Control Unit main
controller board.
Figure 21.
4.2.1 Microphone Connection
The microphone connection is situated at the bottom left of the main controller
board. It connects to the front display and is factory set.
TX3 Telephone Access System Installation and Operation Manual
Input 3
− +
Input 2
Speaker
− +
Connection
+ −
Unused
Unused
Unused
− +
Input 1
White Red Black
Microphone
Connection
Controller Board Connectors - Bottom
RS-485 OUT
− s +
LED/LAMP
Input 4 Supply
− + + −
− +
Input 5
−
Camera Supply
− s +
RS-485 IN
Lobby Control Unit Setup
Power Supply for TX3
(use 18 AWG)
+
41