Martin Fireplaces 2518 user manual Troubleshooting, a p p e n d i x a

a p p e n d i x a

TROUBLESHOOTING

problem	probable cause(s)	suggested remedy
	The controller is discon-	Connect controller.
	nected from the data link.
None of the fixtures
respond to the controller.	Blackout or standby mode	Press blackout button.
	selected.
		Check data link connec-
	Bad data link connection.	tions/cables and correct
		accordingly.*
	DMX signal polarity	Swap pins 2 and 3. See
	reversed.	section 2.
	DMX signal reflection.	Insert termination plug in
Some fixtures do not		the last light on the link.
respond, respond erratically,
	Incorrect addressing of fix-
or continuously reset.		Check addresses.
	tures.
	Fixtures not on.	Turn on fixtures.
		Switch the fixtures off and
	Protocol auto-detection fail-	then back on. In general,
	ure.	power on the controller
		before the fixtures.
Save commands do not	Memory locked.	Unlock memory.
work.
Fixtures do not execute pro-	Fader control is overriding
gramming on one or more		Turn off fader control.
	programming.
channels.
	The scenes do not contain	Make sure the “Lamp On”
No light from some or all fix-	‘Lamp On’ instructions for
		command is saved in at
tures.	fixtures with remote lamp
		least one scene.
	on/off.
Uneven or incomplete fader	Faders not calibrated.	Calibrate faders as
control.		described in “Service”.

*To test the data link with an ohm meter, disconnect the link from the controller and measure the resistance across pins 2 and 3 of the XLR male plug. The reading should be around 120 ohms. Readings from 400 - 20,000 ohms indicate the data link is not terminated. Infinite resistance indicates a bad connection, broken wire, or a defective fixture. Very low readings indicate a short circuit in the link or a defective fixture.

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