Daktronics Galaxy AF-3500/3550 - Manual (Page 24)

20 Maintenance
Dry Cleaning Process
1. Turn off power to the display.
2. Rub a dry, soft terrycloth towel horizontally across each row of LEDs. Make several passes per row of
LEDs before moving to the next row of LEDs. Work from top to bottom safely within reach from a lift or a
stage. Take care not to damage LEDs or the plastic louvers by catching the cloth on them.
6.5 Annual Inspection
Complete a yearly display inspection to maintain safe and dependable operation. Open the display to visually
inspect the cabinet interior and the components. Refer to
Section 6.2 for directions to access the interior.
• Tighten and replace any loose fasteners.
• Vacuum or carefully wipe away dust and debris around the fans and inside the cabinet.
• Check for water intrusion or stains and replace weather stripping, tighten module latches, place
silicone sealant around areas where water might enter, and replace damaged electronic components
as necessary.
• Also, check the paint for cracking and peeling and touch up with rust-resistant enamel as necessary.
• Inspect the footings, tie points, and ground rods for corrosion and make sure the structural integrity
and grounding connections are intact.
A log is provided in Appendix D to track maintenance and help determine a maintenance schedule specific
to the individual display.