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34
MAC 250 Wash
Troubleshooting
Problem
Probable cause(s)
Remedy
One or more of the fixtures
is completely dead.
No power to fixture.
• Check that power is switched on and cables
are plugged in.
Primary fuse blown.
• Replace fuse.
Secondary fuse(s) blown (located on
PCB inside base).
• Check fuses on PCB and replace.
Fixtures reset correctly but
all respond erratically or
not at all to the controller.
The controller is not connected.
• Check connections.
XLR pin-out of the controller does not
match pin-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 (page 14). 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.
Bad data link connection
• Inspect connections and cables. Correct
poor connections. Repair or replace dam-
aged 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 (unplug both
connectors and connect them directly
together) until normal operation is regained.
Have the defective fixture serviced by a
qualified 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.
No light and
error
message displayed.
The power supply settings do not
match local AC voltage and frequency.
• Disconnect fixture. Check settings (“
AC
power
” on page 8) and correct if necessary.
Lamp missing or blown
• Disconnect fixture and replace lamp.
Lamp cuts out
intermittently.
Fixture is too hot.
• Allow fixture to cool.
• Clean fans, air filter and air vents.
• Ensure that ambient temperature (Ta) does
not exceed 40° C (104° F).
The power supply settings do not
match local AC voltage and frequency.
• Disconnect fixture. Check settings (“
AC
power
” on page 8) and correct if necessary.
Table 7: Troubleshooting
Summary of Contents for MAC 250 Wash
Page 1: ...MAC 250 Wash user manual TM...
Page 35: ...Circuit board connections 35 Circuit board connections DMX...
Page 40: ...40 MAC 250 Wash...
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