Mackie PPM608 DJ Equipment User Manual


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PPM608
PPM608
Appendix A: Service Information
If you think your powered 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 and documentation.
You may find the answer to the problem without having
to send your mixer away.
Troubleshooting
Bad Channel
• IstheEQsetupnicely?
• Isthegainswitchsetcorrectly?
• Isthelevelupenough?
• IsthechannelOLledon?
• Istheretoomuchcompressiononchannels
1-4?
• Arethehi-zinstrumentswitchessetOKfor
guitarsconnectedtochannels5and6?
• Tryunplugginganyinsertdevicesfromthe
insert jacks.
• Trythesamesourcesignalinanotherchannel,
set up exactly like the suspect channel.
• Isphantompowerrequiredforyourmicro-
phones?
Bad Output
• Isthemainmasterlevelcontrolturnedup?
• ArethegraphicEQssettoreasonablelevels?
• IstheFXlevelgoingtothemainmix,toohigh?
• Ifit’soneofthemainspeaker-leveloutputs,
try unplugging its companion. For example, if
it’s the 1/4" left main output, unplug the left
Speakon output. If the problem goes away, it’s
not the powered mixer.
• Ifaleftspeakerispresumeddead,connectit
to the right output instead. If the problem stays
with the same speaker, check the speaker wir-
ing, or any speaker fuses.
• Unpluganythingfromthemainline-level
outputs, or other line-level outputs, such as the
sub out, FX/mon 2 send, or mon 1 send, just in
case one of your external pieces has a problem.
• Ifthepoweramplimiterlightscomeonoften,
you may be overdriving the amplifiers. Check
the loudspeaker average load impedance is not
less than 4 ohms. Check the speaker wiring.
Noise
• Turnthechannellevels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powered
mixer is connected to a suitable live AC mains
outlet, and the power switch is on. Check the
power cord is securely plugged in.
Repair
For warranty service, refer to the warranty informa-
tion on page 31.
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, Mon-
day-Friday, normal business hours, PST, to explain the
problem. Tech Support will tell you where the nearest
factory-authorized service center is located in your area.
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