Daktronics VANGUARD VL-3500 Series, Руководство пользователя

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Maintenance
12
3. With a
1
/
8
" hex wrench, turn the latch access fasteners a quarter turn counter-
clockwise. Gently pull the module far enough forward to reach behind the back and
disconnect the power and ribbon cables.
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 the cable connections so
they can later be reconnected correctly.
5. Unplug the power cables 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 at both the top and bottom locations by turning the hex
wrench clockwise a quarter turn.
Note: The weather-stripping on the back edge of the module must be intact and
in good condition to prevent water from entering 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.
Ventilation System/Fans
VL-35X0 series displays are equipped with ventilation systems to help keep the internal
electrical components at operable temperatures. Intake fans bring air into the display
through vents situated on the bottom front. Exhaust then leaves the display through
adjacent vents along the bottom front. Figure 9 provides an example of the display’s
airflow.
Note: The air vents are located behind a false face and cannot be readily seen.
There is also a smaller fan located on the display controller enclosure cover which should
always be running.
Frequency of Inspection
Fans should be checked every
time the display is opened or at
a minimum of once every three
months. Check more often if the
display is located in a dusty or
harsh environment, such as along
a gravel road.
The frequency of inspection
will vary greatly from display to
display as no two display setups
are exactly the same. Therefore,
Daktronics advises users and
service technicians to use their
own discretion when establishing
an inspection schedule.
Figure 9: Ventilation Airflow