Daktronics AF-3400-64-R,A - Manual (Page 29)

Section 4: Maintenance and
Troubleshooting
Important Notes:
1. Disconnect power before performing any repairs or
maintenance work on the display!
2. Only qualified service personnel may access internal display
electronics.
3. The Daktronics engineering staff must approve ANY changes
made to the display. Before altering the display, you must
submit detailed drawings for the proposed modifications to
the Daktronics engineering staff for evaluation and approval,
or the warranty will be void.
4.1 Maintenance and Troubleshooting Overview
Daktronics Galaxy
®
AF-3400, 64mm series mono displays are front accessible;
meaning access to the internal components can be gained only from the front of the
display.
This section provides the following Galaxy
® display information:
• Signal Routing Summaries give a basic explanation of the signal travel
through the display.
• Power Routing Summaries show a basic explanation of the power travel
through the display.
• Service and Diagnostics offer instructions for removing various display
components and explain the functions of circuit board connectors and the
meanings of any diagnostic LEDs.
• Maintenance lists a number of steps to take to keep this Galaxy
®
display in
safe, working order.
• Troubleshooting presents some possible display malfunctions and provides
a number of possible causes for that malfunction.
• Replacement Parts List includes the part description and number of
display components that could need replacing during the life of this display.
• Daktronics Exchange and Repair and Return Programs explain the
Daktronics component return policy.
• Frequently Asked Questions lists some general information regarding the
Galaxy 3400 Series displays.
Note: A single pixel flashing in the lower right hand corner of the display indicates
that the display has power, but no messages are currently running.
4.2 Signal Summary
The signal routing for the display can be summarized as follows:
1. Data from the controller computer, which runs Venus ® 1500 software,
travels via RS232, RS422, modem, fiber optic cable, radio signal or
Ethernet to the signal termination enclosure at the primary display.
2. From the signal enclosure, signal is sent to the primary display via a quick
connect cable.
Maintenance and Troubleshooting
4-1