Troubleshooting - Martin MAC 300 User Manual

s e c t i o n 9
TR O U B L E S H O O T I N G
Problem
One or more of the
fixtures is 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.
An effect fails to reset
correctly.
No light and "LERR"
error message
displayed.
Lamp cuts out
intermittently.
Probable cause(s)
No power to fixture.
Primary fuse blown.
Secondary fuse(s) blown (located
on PCB inside base).
The controller is not connected.
XLR pin-out of the controller does
not match pin-out of the first fixture
on the link (i.e. signal is reversed).
Bad data link connection
Data link not terminated with
termination plug.
Incorrect addressing of the fix-
tures.
One of the fixtures is defective and
disturbs data transmission on the
link.
XLR pin-out on fixtures does not
match (pins 2 and 3 reversed).
The effect requires mechanical
adjustment.
The ballast and transformer set-
tings do not match local AC volt-
age and frequency.
Lamp missing or blown
Fixture is too hot.
The ballast and transformer set-
tings do not match local AC volt-
age and frequency.
Table 7: Troubleshooting

Troubleshooting

Remedy
Check that power is switched on and
cables are plugged in.
Replace fuse.
Check fuses on PCB and replace.
Connect controller.
Install a phase-reversing cable between
the controller and the first fixture on the
link.
Inspect connections and cables. Correct
poor connections. Repair or replace dam-
aged cables.
Insert termination plug in output jack of
the last fixture on the link.
Check address and protocol settings.
Bypass one fixture at a time until normal
operation is regained: unplug both con-
nectors and connect them directly
together. Have the defective fixture ser-
viced by a qualified technician.
Install a phase-reversing cable between
the fixtures or swap pins 2 and 3 in the fix-
ture that behaves erratically.
Contact Martin technician for service.
Disconnect fixture. Check ballast and
transformer settings and correct if neces-
sary.
Disconnect fixture and replace lamp.
Allow fixture to cool.
Reduce ambient room temperature.
Recalibrate temperature sensors.
Check ballast and transformer settings
and correct if necessary.
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