Daktronics AF-3160-34-R,A - Manual (Page 49)

The terminating jumper is located on the quick connect board on the inside of the
display. Most displays have both an input and an output quick connect board. When
no output board is available, the terminating jumper will be placed on the input board
of the last display. Refer to
Figure 43 and Figure 44 for more information.
Figure 45: Quick Connect Boards
4.5 Ventilation Systems (With Fans and Filters)
Ventilation fans should be checked after 1,500 hours of operation and every 1,500
hours after that to ensure the display is being cooled properly. Fans should be
checked more often if the display is located in a dusty or harsh weather environment
(i.e. along a gravel road with dust laden air).
• 1,500 hours is equivalent to 83 days if the display is operated for 18 hours a
day and the power to the display is turned off when not in use.
• 1,500 hours is equivalent to 62 days if the display is running non-stop for 24
hours a day.
• Each time a module is removed, for whatever reason, take a minute to
inspect the fans.
• Check the fan blades for dirt and debris. If the fan blades have a large
accumulation of dirt and debris, this indicates that the filters must be
cleaned/changed more often. Fan blades must be kept clean to maintain fan
efficiency and ensure proper cooling.
Maintenance and Troubleshooting
4-13
• Spin the fan blades with a pen or pencil to ensure that the bearings are free
and the fan is still in balance.