SERVICE INFORMATION
TROUBLESHOOTINGPower
If you think your Mackie product has a prob- Y Our favorite question: Is the POWER (20)
lem, please do everything you can to confirm itswitch on?
before calling for service. Doing so might save
Y Turn off the power from the wall, unplugyou from the deprivation of your mixer and the
the power cord and check the fuse (22).associated suffering. HereOs a few troubleshoot-
ing suggestions:
No channel signal
Y Is the 1-2 & 3-4 (40) or L-R (41) switch set
correctly?
Y Is the CHANNEL FADER (42) turned up?
Y Try soloing that channel. Does it appear on
the METERS (54)?
Y On mono channels, try unplugging any
INSERT (3) effects devices.
Y Try the same signal in another channel, set
up exactly like the suspect channel.
No Output
Y Are the L/R ASSIGN (59) switches set
correctly?
Y Are the MAIN MIX FADER (72) or SUB-
GROUP FADERs (60) turned up?
Y Try unplugging any insert (7) (13) effects
devices.
Y If itOs one of the MAIN OUTS (12) (16), try
unplugging the other. For example, if itOs
the MAIN OUTS (TRS) (12), unplug the
associated MAIN OUT (XLR) (16) output.
If the problem goes away, itOs not the mixer.
Y If itOs one bad side of 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 stays on the left side, itOs not the
mixer.
Noise
Y Turn the CHANNEL FADERs (42) and
STEREO AUX RETURNS (48) down, one
by one. If the sound disappears, itOs either
that channel or whatever is plugged into it,
so unplug whatever that is. If the noise
disappears, itOs from your whatever.
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ACEC
