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36
MAC 401 Dual™ user manual
Troubleshooting
Problem
Probable cause(s)
Remedy
Fixture is completely dead.
No power to fixture.
Check power and connections.
Fuse blown.
Disconnect fixture from power. Check fuses and
replace.
One or more fixtures resets
correctly but responds
erratically or not at all to the
controller.
Fault on data link.
Inspect connections and cables. Correct poor
connections. Repair or replace damaged cables.
Data link not terminated.
Insert termination plug in output connector of the
last fixture on the link.
Incorrect fixture DMX addressing.
Check addressing on fixture and controller.
Check fixture is set to correct DMX mode.
One of the fixtures is defective and is
disturbing data transmission on the link.
Unplug XLR in and out connectors and connect
them directly together to bypass one fixture at a
time until normal operation is regained. Have faulty
fixture serviced by Martin service technician.
XLR pin-out on fixtures does not match (pins
2 and 3 reversed).
Install a phase-reversing cable between the fixtures
or swap pins 2 and 3 in the fixture that behaves
erratically.
Light output shuts down
unexpectedly.
Fixture is too hot.
Clean the fixture, especially air vents. Ensure free
airflow around fixture. Check that ambient
temperature does not exceed max. permitted level.
Switch to FULL cooling mode.
If problem persists, contact Martin for advice.
Table 8: Troubleshooting