Mackie SRM350 Owner's Manual - Page 14

SERVICE INFORMATION Warranty Service Details concerning Warranty Service are spelled out on page 19 of this manual. If you think your loudspeaker has a problem, please do everything you can to confirm it before calling for service, including reading through the following troubleshooting section. Doing so might save you from being deprived of your Mackie loudspeaker. If you do find the problem, make sure that you turn down the LEVEL controls and turn off the SRM350 before correcting it or changing any connections. Of all Mackie products returned for service (which is hardly any at all), many are coded "CND" - Could Not Duplicate- which usually means the problem lay somewhere else in the system. The following troubleshooting tips may sound obvious, but here are some things you can check: Troubleshooting No power! • Our favorite question: Is it plugged in? Make sure the AC outlet is live (check with a tester or lamp). • Our next favorite question: Is the POWER switch on? If not, try turning it on. • Is the blue light on the front panel illuminated? If not, make sure the AC outlet is live. If so, refer to "No sound" below. • The AC line fuse inside the chassis is blown. This is not a user-serviceable part. Refer to "Repair" on page 16 to find out how to proceed. No sound! • Is the input LEVEL control turned all the way down? Follow the procedures in the "Quick Start" section on page 6 to verify that all the volume controls in the system are properly adjusted. • Is the signal source working (and making union scale)? Make sure the connecting cables are in good repair and securely connected at both ends. Make sure the output volume (gain) control on the mixing console or preamp is turned up sufficiently to drive the inputs of the speaker. You should be able to see the SIGNAL LED blink on the rear panel. • Make sure the preamp or mixer does not have a Mute on, or a Tape or Processor loop engaged. If you find something like this, make sure the volume/gain is turned down before disengaging the offending switch. One side is way louder than the other! • Are the LEVEL controls set the same on both active speakers? • Check the PAN control or balance on the signal source. It may be turned too far to one side. If you're using a stereo signal source, it may be delivering an out-of-balance stereo signal. • Try swapping sides: Turn off the active speakers, swap the input cables coming from the mixing console, turn the active speakers back on. If the same side is still louder, the problem may be with your active speakers or cables between the mixer and the active speaker. If the other side is louder now, the problem is with the mixer or the signal source. Poor bass performance • Check the polarity of the connections between the mixer/preamp and the active speakers. You may have your positive and negative connections reversed at one end of one cable, causing one SRM350 to be out-of-phase. 14