Johnson Systems JS-ICON 624 ARCH Dimmer Rack - Manual (Page 11)

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Basic JS-ICON Troubleshooting
Fault/Complaint Status LED Indicators Possible Reason/Fix
No output (all circuits). Power LED Off. No power to system. Check main breaker.
No output (all circuits). Power LED Flashes. Microcontroller failure. Contact factory.
No output (all circuits). Power LED On, RX LED Off. No DMX signal is present.
No output (all circuits). Power LED On, RX LED Flashes. Invalid DMX signal is received.
No output (all circuits). Power LED On, RX LED On,
Control Level LED’s Off.
Verify correct DMX Start Address is set.
Internal hardware failure. Contact factory.
No output (all circuits). All LED’s On. Dimmer circuit breakers off or tripped. Check
breakers.
No output (one or
more circuits).
All LED’s On. Dimmer circuit breaker(s) off or tripped.
Check breakers.
Burnt out lamp(s) or defective fixture.
Replace with known good fixture and lamp.
Light(s) do not dim,
on/off only.
All LED’s On. JS-ICON ™ configured as a “non-dim”. Check
DIP switch settings.
JS-ICON ™ incorrectly wired. Verify contractor
wiring and power type (1-phase or 3-phase).
Confirm model number power requirement.
Contact factory.
Lights on circuits 3
and 4 do not dim,
on/off only.
All LED’s On. JS-ICON ™ incorrectly wired. Verify contractor
wiring and power type (1-phase or 3-phase).
Verify 1-phase/3-phase switch is set for the
correct incoming power supply type.
Light(s) will not dim
out completely.
All LED’s On. Control levels present on DMX. Check DMX.
Analog signal present. Remove analog
signal source and re-check.
Lights stuck on. Power LED On, RX LED On,
Control Level LED’s Off.
Defective SSR. Replace SSR power pack.
Lights off, no control. Power LED On, RX LED On,
Control Level LED’s On.
Dimmer circuit breaker(s) off or tripped.
Check breakers.
Burnt out lamp(s) or defective fixture.
Replace with known good fixture or lamp.
Defective SSR. Replace SSR power pack.
Lights flickering. Power LED On, RX LED On,
Control Level LED’s On or Off.
Defective SSR. Replace SSR power pack.
Lights flickering. Power LED On, RX LED On,
Control Level LED’s flickering
between On and Off.
Noise on DMX line. Verify DMX termination
is correct for the system.
Noise on analog inputs. Disconnect analog
inputs and re-check.
Defective SSR. Replace SSR power pack.
WARNING: Ensure all power is disconnected prior to servicing! All
servicing of this product should be performed by authorized personnel only!
Unauthorized service may void the warranty!