SHOWTEC 41394, Manual

Page: 38 / 44

37
Ordercode: 41394
Expression 550S
Problem Probable cause(s) Solution
One or more
fixtures do not
function at all
No power to the fixture
• Check if 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/5-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 restored:
unplug both connectors and
connect them directly together.
• Have the defective fixture
serviced by a qualified technician
3-pin/5-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
No light or LEDs
cut out
intermittently
Fixture is too hot
• Allow the fixture to cool down
• Clean the fan
• Make sure that air vents and the
front lens are not blocked
• Turn up the air conditioning
LEDs damaged
• Disconnect the fixture and return it
to your dealer
The power supply settings do not
match local AC voltage and
frequency
• Disconnect fixture. Check settings
and correct if necessary