SHOWTEC LED PAR 64 SHORT Product Manual page 18

Problem
One or more
fixtures are
completely dead.
Fixtures reset
correctly, but all
respond
erratically or not
at all to the
controller.
Fixtures reset
correctly, but
some respond
erratically or not
at all to the
controller.
No light
Lamp cuts out
intermittently.
Probable cause(s)
No power to the fixture
Primary fuse blown.
The controller is not connected.
3-pin XLR Out of the controller
does not match XLR Out of the first
fixture on the link (i.e. signal is
reversed).
Poor data quality
Bad data link connection
Data link not terminated with 120
Ohm termination plug.
Incorrect addressing of the fixtures.
One of the fixtures is defective and
disturbs data transmission on the
link.
3-pin XLR Out on the fixtures does
not match (pins 2 and 3 reversed).
The power supply settings do not
match local AC voltage and
frequency.
LEDs damaged
Fixture is too hot.
The power supply settings do not
match local AC voltage and
frequency.
Remedy
· Check that power is switched on
and cables are plugged in.
· Replace fuse.
· Connect controller.
· Install a phase reversing cable
between the controller and the first
fixture on the link.
· 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.
· Inspect connections and cables.
Correct poor connections. Repair or
replace damaged cables.
· Insert termination plug in output jack
of the last fixture on the link.
· Check address setting.
· 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.
· Install a phase-reversing cable
between the fixtures or swap pin 2
and 3 in the fixture, that behaves
erratically.
· Disconnect fixture. Check settings
and correct if necessary.
· Disconnect fixture and return to your
dealer.
· Allow fixture to cool.
· Turn up the air conditioning.
· Disconnect fixture. Check settings
and correct if necessary.
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