Appendix A: Service Information - Mackie SP260 Owner's Manual

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) to get some
ideas or contact our technical support heroes. You may
find the answer to the problem without having to send
your Mackie product away.
Troubleshooting
No Power
• Our favorite question: Is it plugged in?
• Make sure the power cord is securely seated in
the IEC socket and plugged all the way into the
AC outlet.
• Is anything on the front panel illuminated? If not,
make sure the AC outlet is live [check with a
tester or lamp].
• Make sure the rear panel power switch is in the
ON position.
• Are all the lights out in town? If so, contact the
local power company to get power restored.
• Is the fuse blown? See instructions to the right for
removing and replacing it.
• If nothing is illuminated (and you are certain that
the AC outlet is live and the fuse is not blown),
it will be necessary to have the SP260 serviced.
There are no user serviceable parts.
Refer to "Repair" on the next page to find out how
to proceed.
Noise / Hum
• Try changing the position of the main ground lift
switch [3] on the rear panel of the SP260.
• Check the signal cables between the mixer
and the processor and the processor, amps and
loudspeakers. Disconnect them one-by-one. If
the noise goes away, you will know which input
or output is causing the problem.
• Sometimes it helps to plug all the audio
equipment into the same AC circuit so they share
a common ground. Make it so.
22
SP260 2x6 Speaker Processor
To remove and replace the fuse:
1. Disconnect the power cord from the IEC socket.
2. Remove the fuse drawer by prying it open with a
small screwdriver. It will slide all the way out.
3. Remove the fuse and replace it with an
equivalent-type fuse:
T 800mAL / 250 V
4. Replace the fuse drawer by pushing it all the way
back into the IEC socket.
If two fuses blow in a row, then something is very
wrong. Try a different outlet in a totally different
location. If fuses continue to blow, see the "Repair"
section on the next page to find out what to do.
No Sound
• Are the level controls on the mixer or amplifier
turned all the way down? Follow the procedures
in "Getting Started" section on page 5 to verify
that all of the volume controls in the system are
properly adjusted.
• Is the signal source working (and making union
scale)?
• Are all the connections good and sound? Make
sure all of the connecting cables are in good
repair and securely connected at both ends.
FUSE