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Appendix A: Service Information
If you think your Mackie product 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/support)
where you will find lots of useful information such as
FAQs, and documentation. You may find the answer to
the problem without having to send your Mackie prod-
uct away.
Troubleshooting
Bad Channel
• Is the MUTE/ALT 3–4 switch in the correct
position?
• Is the LEVEL knob turned up?
• Try unplugging any INSERT devices (Channels
1–4 only).
• Try the same source signal in another channel,
set up exactly like the suspect channel.
Bad Output
• Is the associated level knob (if any) turned up?
• If it’s one of the MAIN OUTS, try unplugging
all the others. For example, if it’s the 1⁄4"
Left Main out, unplug the RCA and XLR Left
outputs. If the problem goes away, its not the
mixer.
• If it’s a stereo pair, try switching them around.
For example, if a left output is presumed dead,
switch the left and right cords, at the mixer
end. If the problem switches sides, it’s not the
mixer.
Noise
• Turn the channel LEVEL and AUX RETURN
knobs down, one by one. If the sound disap-
pears, 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
• Unplug the power cord and check the fuse.
Repair
For warranty service, refer to the warranty informa-
tion on page 27.
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, PST, to explain
the problem. Tech Support will tell you where the near-
est factory-authorized service center is located in your
area.
