SERVICE INFORMATION
TROUBLESHOOTINGIf you think your Mackie product has a prob- lem, please do everything you can to confirm it before calling for service. Doing so might save you from the deprivation of your mixer and the associated suffering. Here’s a few troubleshooting suggestions:
No channel signal•Is the
•Is the CHANNEL FADER (42) turned up?
•Try soloing that channel. Does it appear on the METERS (54)?
•On mono channels, try unplugging any INSERT (3) effects devices.
•Try the same signal in another channel, set up exactly like the suspect channel.
No Output•Are the L/R ASSIGN (59) switches set correctly?
•Are the MAIN MIX FADER (72) or SUB- GROUP FADERs (60) turned up?
•Try unplugging any insert (7) (13) effects devices.
•If it’s one of the MAIN OUTS (12) (16), try unplugging the other. For example, if it’s the MAIN OUTS (TRS) (12), unplug the associated MAIN OUT (XLR) (16) output. If the problem goes away, it’s not the mixer.
•If it’s 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, it’s not the mixer.
Noise•Turn the CHANNEL FADERs (42) and STEREO AUX RETURNS (48) 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.
•Our favorite question: Is the POWER (20) switch on?
•Turn off the power from the wall, unplug the power cord and check the fuse (22).
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