Daktronics Galaxy AF-3050 Series, Display Manual

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Maintenance and Troubleshooting
4-4
Switch 8 Switch 7 Switch 6 Switch 5 Switch 4 Switch 3 Switch 2 Switch 1 Address
Off Off Off Off Off Off Off Off Test Mode
Off Off Off Off Off Off Off On 1
Off Off Off Off Off Off On Off 2
Off Off Off Off Off Off On On 3
Off Off Off Off Off On Off Off 4
Off Off Off Off Off On Off On 5
Off Off Off Off Off On On Off 6
Off Off Off Off Off On On On 7
… … … … … … … … …
On On On On Off Off Off Off 240
Four diagnostic LEDs are located on the controller. The following table explains what each LED
represents:
LED Color Function Operation Summary
TEMP Red Temperature
Level Flashes Flash rate is dependent upon the temperature.
Flashes faster in high temperature and slows as the
temperature decreases.
LGHT Red Photocell Light
Level
Flashes Flash rate is dependent on the light level. Flashes
faster in bright light and slows as darkness descends.
RUN Red Controller Steady
Flash A steady flash indicates the controller is running
correctly. Normal flash rate is about once a second.
PWR Green Power Always On Power to the data input circuit when lit.
RX1 Yellow Com 1 Flashes Turns on and flashes when receiving information.
RX2 Yellow Com 2 Flashes Turns on and flashes when receiving information,
typically used in custom applications.
Complete the following steps to remove this circuit board from the display:
1. Disconnect power from J2.
2. Remove all power and signal connections from the board. “Locked” connectors are released
by squeezing together the tabs, then carefully pulling them from the jack. When replacing the
board, it may be helpful if the cables are labeled as to which cable was removed from which
connector.
3. Remove each of the six screws holding the board in place.
4. Follow the previous steps in reverse order to install a new controller board.
If this board is being sent back to Daktronics keep any nuts, bolts or standoffs and immediately
place the board in a static bag.
Modules and Drivers
In most instances, the module and driver board can be addressed as a single functional unit. Every
module has a driver board mounted to its backside.
The LED power supplies are identified as assemblies (refer to
Power Supplies on the following
page). Each power supply controls two modules; a single power supply assembly (one power
supply) controls two.
To remove a module, complete the following steps:
1. Locate the latch access fasteners on the module. One is centered below the top row of pixels
and one is above the bottom row.
2. With a 1/8" T-handle Allen wrench, turn the latch access fasteners a quarter turn. The top one
should be turned clockwise and the bottom one counter-clockwise.