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PHANTOS
®
Distributed in Australia by PHANTOS www.phantos.com.au
4.3 Trouble Shooting
Problem
Probable cause(s)
Remedy
One or more fixtures
are dead.
No power to the fixture
· Check that power is switched on and cables are
plugged in.
Primary fuse blown
· Replace fuse.
Fixtures reset
correctly, but all
respond erratically or
not at all to the
controller.
The controller is not
connected.
· Connect controller.
3-pin XLR Out of the
controller does not match
XLR Out of the first fixture
on the link (i.e. signal is
reversed).
· Install a phase reversing cable between the controller
and the first fixture on the link.
Fixtures reset
correctly, but some
respond erratically or
not at all to the
controller.
Poor data quality
· Check data quality. If much lower than 100 percent,
the problem may be a bad data link connection, poor
quality or broken cables, missing termination plug, or
a defective fixture disturbing the link.
Bad data link connection
· Inspect connections and cables. Correct poor
connections. Repair or replace damaged cables.
Data link not terminated
with 120
Ohm termination plug.
· Insert termination plug in output jack of the last
fixture on the link.
Incorrect addressing of the
fixtures.
· Check address setting.
One of the fixtures is
defective and disturbs data
transmission on the link.
· Bypass one fixture at a time until normal operation is
regained: unplug both connectors and connect them
directly together.
· Have the defective fixture serviced by a qualified
technician.
3-pin XLR Out on the
fixtures does not match (pins
2 and 3 reversed).
· Install a phase-reversing cable between the fixtures
or swap pin 2 and 3 in the fixture that behaves
erratically.
