Controller
Reference Drawings:
Controller, Galaxy, 8-conn, J1087 ...............................
Drawing B-177838
The controller sends data to the modules. Refer to the signal summary in
Section 4.2
and
Drawing B-177838
for more information.
illustrates a typical
controller.
Figure 36: Controller Component Layout
The rotary switches set the hardware address, which the software uses to identify that
particular display. When replacing a controller board, be sure to set the rotary
switches in the same address configuration as the defective controller. Each
controller in a network needs a unique address.
Note:
Setting both rotary switches to address 0 (set the switches to 0 by rotating
them counter clockwise until the arrow points to 0) can activate a test mode. The
display’s power must be turned off, and then turned back on to run the test mode.
Complete the following steps to remove the controller from the display:
1.
Disconnect power from J5.
2.
Remove all power and signal connections from the board. “Locked”
connectors are released by pushing apart the latches then carefully pulling
them from the jack. When replacing the board, it is helpful to have the
cables labeled for easier replacement.
3.
Remove the six screws holding the board in place with a 3/16” nut driver.
4.
Follow the previous steps in reverse order to install a new controller board.
The following chart illustrates several common hexadecimal address.
Maintenance and Troubleshooting
4-5
