Troubleshooting - Martin MAC 250 Wash User Manual

Troubleshooting

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.
No light and  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).
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.
XLR pin-out on fixtures does not
match (pins 2 and 3 reversed).
The power supply settings do not
match local AC voltage and frequency.
Lamp missing or blown
Fixture is too hot.
The power supply settings do not
match local AC voltage 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.
• Check connections.
• Install a phase-reversing cable between the
controller and the first fixture on the link.
• Check data quality (page 13). If much under
100 percent, the problem may be a bad data
link connection, poor quality or broken
cabling, missing termination, or a defective
fixture disturbing 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 setting.
• Bypass one fixture at a time (unplug both
connectors and connect them directly
together) until normal operation is regained.
Have the defective fixture serviced by a
qualified technician.
• Install a phase-reversing cable between the
fixtures or swap pins 2 and 3 in the fixture
that behaves erratically.
• Disconnect fixture. Check settings ("AC
power" on page 7) and correct if necessary.
• Disconnect fixture and replace lamp.
• Allow fixture to cool.
• Clean fans, air filter and air vents.
• Ensure that ambient temperature (Ta) does
not exceed 40° C (104° F).
• Disconnect fixture. Check settings ("AC
power" on page 7) and correct if necessary.
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