Daktronics 4000 Series Digital Billboard - Manual (Page 32)

26 Annual Maintenance C hecks
Water Intrus ion Ins pection
1. Check section splices for water trails. Follow the water trail and silicone as needed.
2. Check the inside of the display at several locations for evidence of water intrusion,
corrosion, or water stains. Include the cabinet, modules, power supplies, and PLRs in the
inspection. Photograph any evidence of water intrusion.
Modules
1. Ensure all modules are seated properly. View the display from one end and look down
the face of the display to inspect for modules that are sticking out.
2. Inspect the gaskets on the back of a few modules and ensure they are in good condition.
3. Check modules for pixels out, stuck pixels, bent LEDs, broken louvers, and other issues
that may affect the display image quality.
4. Remove any loose modules and inspect them for stripped gears, broken latches,
unlatched modules, etc. If a module has a broken module latch, replace the module and
send the other module to Daktronics for repair.
R emote E nclos ure
1. Inspect the remote enclosure for overall integrity.
2. Check the remote enclosure for signs of water intrusion, especially at entry locations.
3. If the remote enclosure is equipped with a/c, check the filter. Remove and wash the filter
if it is dirty. Allow the filter to dry before reinserting it.
4. Visually inspect the electronics and cabling in the remote enclosure. Look for worn
cables, connectors, dust in the computer or VIP-4060 fans, corrosion, etc.
5. Check the battery level of the UPS in the remote enclosure.
6. Verify that the key to the spare parts box is in the remote enclosure.
S pare P arts B ox
1. Inspect the spare parts box for signs of water intrusion.
2. Inventory all spare parts in the box.
3. Lock the spare parts box and place the keys in the remote enclosure.