Appendix A: Service Information; Troubleshooting - Mackie ONYX 1220i Owner's Manual

Appendix A: Service
Information
If you think your mixer has a problem, please check
out the following troubleshooting tips and do your best
to confirm the problem. Visit the Support section of our
website (www.mackie.com) where you will find lots of
useful information such as FAQs, documentation and
any updated PC drivers etc. You may find the answer to
the problem without having to send your mixer away.

Troubleshooting

Bad Channel
• Is the channel EQ set up nicely?
• Is the channel gain set correctly?
• Is the channel level up enough?
• Is the channel OL led on?
• Is the channel pan set in the middle?
• Are the hi-z instrument switches set OK for any
guitars connected to channels 1 or 2?
• Try unplugging any insert devices from the
insert jacks on channels 1-4.
• Try the same source signal in another channel,
set up exactly like the suspect channel.
• Is phantom power required for your micro-
phone?
Bad Output
• Is the main level turned up?
• Are the EQs set to reasonable levels?
• Are any aux returns maxed out?
• Unplug anything from the other line-level out-
puts, such as alt 3-4, control room out, just in
case one of your external pieces has a problem.
• Make sure that you are not overdriving your
amplifiers. Check the loudspeaker average load
impedance is not less than the minimum your
amplifier can handle. Check the speaker wiring.
Noise
• Turn the channel gains down, one by one. If the
sound disappears, it's either that channel or
whatever is plugged into it, so unplug whatever
that is. If the noise disappears, it's from your
whatever.
Power
• The power LED should come on if the mixer is
connected to a suitable live AC mains outlet,
and the power switch is on. Check to make sure
that the power cord is securely plugged in.
Repair
For warranty service, refer to the warranty informa-
tion on page 40.
Non-warranty service for Mackie products is avail-
able at a factory-authorized service center. To locate
your nearest service center, visit www.mackie.com, click
"Support" and select "Locate a Service Center." Service
for Mackie products living outside the United States can
be obtained through local dealers or distributors.
If you do not have access to our website, you can
call our Tech Support department at 1-800-898-3211,
Monday-Friday, normal business hours, Pacific Time, to
explain the problem. Tech Support will tell you where
the nearest factory-authorized service center is located
in your area.
Owner's Manual 27