Daktronics AB-1600-1.5,2.5 - Manual (Page 58)

4-16 Maintenance & Troubleshooting
The table to the right lists the functions of
the connectors found on the controller board.
On the controller board are a number of diagnostic LEDs. The following table lists the LEDs
and their respective functions and operations.
LED Name Function Operation
PWR Controller has power Always On
RUN Controller is running Flashes
LGHT Light Detector Input Light Level=Flash Rate
TEMP Temp Sensor Input Temperature=Flash Rate
RX2 Data In – COM1 On while Communicating
RX2 Data In – COM2 On while Communicating
The W1 and W2 jumpers on the controller board must be ON for modem communication and
OFF for all others: RS/232, RS/422 and fiber optic.
Before this display can run in a sign network, it must have an address. Set the display address
by using the DIP switches on the MDC board. The switches are on the underside of the MDC
board near TB7 of the controller board. The following table lists the switch setting for various
addresses.
Address Switch 1 Switch 2 Switch 3 Switch 4 Switch 5 Switch 6 Switch 7 Switch 8
1 ON OFF OFF OFF OFF OFF OFF OFF
2 OFF ON OFF OFF OFF OFF OFF OFF
3 ON ON OFF OFF OFF OFF OFF OFF
4 OFF OFF ON OFF OFF OFF OFF OFF
5 ON OFF ON OFF OFF OFF OFF OFF
6 OFF ON ON OFF OFF OFF OFF OFF
7 ON ON ON OFF OFF OFF OFF OFF
8 OFF OFF OFF ON OFF OFF OFF OFF
9 ON OFF OFF ON OFF OFF OFF OFF
10 OFF ON OFF ON OFF OFF OFF OFF
11 ON ON OFF ON OFF OFF OFF OFF
... ... ... ... ... ... ... ... ...
127 ON ON ON ON ON ON ON OFF
If the need arises to replace the Venus 1500 display controller, set the DIP switches on the
MDC for the same address as the old controller.
The controller board and the MDC board are one functional unit; replace it as a single device.
Connector Function
J1 RS/232 In – COM1
TB1 RS/232 In – COM1
TB2 RS/422 In – COM1
TB3 RS/422 Out – COM1
TB4 RS/232 In – COM2
TB5 RS/422 In – Com2
TB6 RS/422 Out – Com 2
J2 10 VAC Input
J3 Signal Out