Daktronics Galaxy AF-3400 20 mm Monochrome/RGB Double-face Displays - Manual (Page 36)

Maintenance 28
6.1 Display Access
To gain access to the interior of a display, single modules are able to be removed. Refer to
Figure 27 to locate the internal components which may need to be accessed. In the case of
fans, consult the Shop Drawing for the display size. The module in front of the specific
component may be removed to perform maintenance or for troubleshooting.
To access the interior of the display, perform the following steps:
1.
Turn off power to the display.
2.
Locate the latch access fasteners on the module
(Figure 28). One is centered below the second
row of pixels and one is centered above the
bottom two rows.
3.
With a 1/8" hex wrench, turn the latch access
fasteners a quarter turn counterclockwise. Gently
pull the module far enough forward to reach
behind the back and disconnect the power and
ribbon cables (Figure 29). Note the cable
connections so they can later be reconnected
correctly.
4.
Disconnect the two ribbon cables from the
module by spreading the tabs on the sides and
then lifting the cable head from the jack. Note
how they are connected to the back.
5.
Unplug the power cable by squeezing the
tabs on the sides of the plug head and
pulling out.
6.
When ready to reinstall the module,
reconnect the cables to the module, making
sure that the tabs are tightly pushed
against the cable head. Carefully push the
ribbon wires back into the cabinet so they
are clear of the module edges.
7. Place the module into its proper location,
checking that the weather stripping is in place. Latch the module both top and
bottom using the hex wrench.
Note:
• The weather-stripping on the back edge of the module must be intact and in good
condition if it is to prevent water from seeping into the display.
• The module latches must be fully engaged to create a watertight seal around the edge of
the module. The module should be firmly seated against the display when the latches are
fully engaged.
Figure 28: Module Access Locations
Figure 29: Removing a Module