Daktronics GALAXY ECCB Series, Инструкция по установке и эксплуатации

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Display Maintenance
22
7 Display Maintenance
This section explains the steps necessary to maintain the Galaxy
®
eCCB display.
Daktronics Galaxy
®
eCCB displays are front accessible. Remove modules on the front of
the display to gain access to internal components. Figure 7 shows internal component
locations for a 3-foot by 8-foot display. Consult the Electrical Layout drawings in Section
B: Daktronics Warranty and Limitation of Liability (p�37) for component locations for
specific display sizes.
Note: Turn OFF power before any repair or maintenance work is done on the display.
Internal Display Access
1� Disconnect power to the display.
2� Locate the latch fastener on the module. It is centered in the third row of LEDs from
the top of the module. Refer to Figure 8 . Turn the
1
/
8
" hex head wrench a quarter turn
counter-clockwise.
3� Gently tip the top of the module outward slightly. Then lift the module upward to
disengage the tabs at the bottom of the module from the slots on the display's face
sheet.
4� Disconnect the signal cables and unplug the power cable by squeezing the tabs on
the sides of the plug head and pulling it out. Refer to Figure 9 .
5� When ready to reinstall the module, reconnect signal and power cables to the
module. Refer to Figure 13 .
6� Place modules back into their proper locations by inserting the tabs at the bottom of
the modules in the corresponding slots on the display face sheet. Refer to Figure 14 .
Tip the top of the module back into place and latch it by turning the hex head
wrench a quarter-turn clockwise.
Note: A fully seated module should be flush with the modules around it.
Ventilation System
Galaxy
®
eCCB displays are equipped with
a ventilation system that helps keep internal
components at operable temperatures. Make
sure the display support structure allows adequate
space for air movement and proper ventilation.
Refer to the display shop drawing for ventilation
requirements.
Fans
Fans help bring fresh air into the display while
exhausting hot air through the upper vents. Fans
are controlled via a thermostat in the display
cabinet. The thermostat is equipped with a bypass
button for testing fan operation. Replace fans that
are not working properly.
Sign Structure
Exhaust
eCCB
Fan
Modules
Intake
Figure 15: Airflow