Daktronics 4000 Series Digital Billboard - Manual (Page 27)

R outine Maintenance 21
S ection 5: R outine Maintenance
5.1 Ins pecting a Dis play
When performing maintenance on a display, check for the following items:
• Inspect for modules protruding from the display face. If a module is protruding from
the display, press the module in and latch the module. If the module will not latch,
the module may need replacement.
• Inspect for dirty filters in the display and the control enclosure.
• Inspect for water in the display. If water is found, attempt to locate the source of
water intrusion.
• Ensure the fans are working properly.
• Ensure there is not standing water in the spare parts box.
• Ensure the gasket is on the spare parts box.
• Call the NOC at 1-877-325-4357 if any of the issues are found.
5.2 R es tarting a Dis play
Occasionally, it may be necessary to restart a display. To restart a display:
1. Shut down all control equipment in the remote enclosure.
2. Turn off the Uninterruptible Power Supply (UPS). Not turning off the UPS will delay
sign restart.
3. Turn off all breakers in the main distribution panel inside the display. Refer to the
display-specific system riser to locate the distribution panel. Typically, there is one
breaker panel per display section.
4. Turn off site power.
5. Turn on site power.
6. Turn on all breakers in the main distribution panel inside the display.
7. Restart the UPS.
8. Restart all of the control equipment in the remote enclosure.