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C. One of the channels is not working well.
1. The stepper motor might be damaged or the cable connected to the PCB is
broken.
2. The motor’s drive IC on the PCB might be out of condition.
6. Fixture Cleaning
The cleaning of internal and external optical lenses and/or mirrors must be
carried out periodically to optimize light output. Cleaning frequency depends on
the environment in which the fixture operates: damp, smoky or particularly dirty
surrounding can cause greater accumulation of dirt on the unit’s optics.
Clean with soft cloth using normal glass cleaning fluid.
Always dry the parts carefully.
Clean the external optics at least every 20 days. Clean the internal optics at
least every 30/60 days.