ADJ Products, LLC • Los Angeles, Ca USA • Kerkrade, Netherlands
MAINTENANCE GUIDELINES
Careful and regular maintenance is necessary to optimize the potential functional lifespan of the DS4
LED Video Panels.
1. Read the installation and operation instructions for correct operation of the DS4QC LED Video
Panels.
2. Although the DS4QC LED Video Panels are designed and built to withstand some impact forces
when installed correctly, take care to avoid impact damage when handling or transporting them,
especially corners and edges which are particularly frangible during transportation.
3. The fixture should be serviced by a qualified service technician when:
A. Objects have fallen, or liquid has been spilled into the fixture.
B. The fixture has been exposed to rain or water.
C. The fixture does not appear to operate normally or exhibits a marked change in performance.
D. The fixture has fallen and/or subjected to extreme handling.
4. Check each DS4QC LED Video Panel for loose screws and other fasteners.
5. If the DS4QC LED Video Panel installation is fixed or displayed for a lengthy time, regularly
inspect all rigging and installation equipment, and replace or repair it as necessary, and during
long periods of non-use, disconnect the main power to the unit.
6. Because the nanocomposite material comprising the DS4QC LED Video Panel frames is
susceptible to damage caused from exposure to oil, acid, and other corrosive substance, bar any
exposure of the DS4QC panel and frame structures to those substances.
7. Use necessary ESD (electrostatic discharge) precautions when handling DS4QC LED Video
Panels, especially the LED screens, as they are ESD sensitive and easily damaged from ESD
exposure.
8. The Null Line and Live Line connections from the computer and control system cannot be
reversed, and should therefore only be connected in original layout order.
9. If the GFI (Ground Fault Interrupt) breaker-switch trips often, check the display or replace the
power-supply switch.
10. When operating the DS4QC LED Video Panels, power the computer before powering the LED
Video Screens; conversely, when shutting down after operation, turn the LED Video Panels off
before turning off the computer. If the PC is turned off first, a high intensity brightness might
appear, causing catastrophic failure to those LEDs.
11. If while conducting an electrical test a circuit shorts, a breaker-switch trips, wires burn, and or any
other abnormality appears, discontinue testing and troubleshoot units to find the problem before
continuing with any testing or operation.
12. To ensure consistent operation, it might be necessary to learn operating parameters for
installation, data recovery, backup, controller settings, and basic data preset modification.
13. Regularly check computer for any viruses, and remove any irrelevant data.
14. Only a qualified technician should operate software system.
15. Remove any moisture found inside or outside of any DS4QC LED Video Panels before
dismantling video installation, and returning them to their respective flight cases. Ensure flight
cases are free of any moisture, using a fan to dry them if necessary, and avoid ESD generating
friction when returning DS4QC LED Video Panels.
16. Because the DS4QC LED Video Panels are strictly designed for indoor usage, limit or remove
any unit exposure to moisture, condensation, or humidity, and consider using air conditioning
where available.
17. When not in use, store DS4QC LED Video Panels in a dry, well ventilated facility.
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