Appendix A: SERVICE INFO
Owner’s
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/support) 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 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 [6] and plugged all the way into the AC outlet.
•Make sure the AC outlet is live (check with a tester or lamp).
•Is the power [5] switch on the rear panel in the ON position?
•Is the power indicator [8] on the front panel illumi- nated? If not, make sure the AC outlet is live. If so, refer to “No Sound” below.
•If the power indicator is not illuminated, and you are certain that the AC outlet is live, it is possible the fuse has blown.
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.
FUSE
3.Remove the fuse and replace it with an equivalent- type fuse.
115 VAC unit: 1.6 amp
230 VAC unit: 800 milliamp
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. See the “Repair” section on the next page to find out how to proceed.
No Sound
•Is the power indicator [8] on the front panel illumi- nated? If not, refer to “No Power” above.
•Is the INPUT LEVEL [2] control turned up?
•Is the signal source turned up? Make sure the signal level from the mixing console (or whatever device immedi- ately precedes the studio monitor) is high enough to produce sound.
•If it’s a stereo pair, try switching them around. For example, if a left output is presumed dead, switch the left and right cords at the monitor end. If the problem switches sides, it’s not the monitor. It could be a bad cable, or no signal from the mixer.
Bad Sound
•Is the input connector plugged completely into the jack? If using a 1⁄4" plug, make sure it is plugged all the way in.
•Is it loud and distorted? Reduce the signal level at the mixer.
•If possible, listen to the signal source with headphones plugged into the preamp stage. If it sounds bad there, it’s not the monitor.
•Too much bass or not enough bass? Move around the room and see if the bass response changes. It’s possible your listening position coincides with a room mode where the low frequencies either become exaggerated or nulled. If so, try moving the monitors to a different position, or moving your listening position.
Noise/Hum/Buzz
•Check the signal cable between the mixer and the monitor. Make sure all connections are secure. These problems usually produce crackling noises, hum, or buzz.
•If connecting an unbalanced output to the MR5 balanced input, make sure the shield is connected to the unbalanced ground of the source and to pins 1 and 3 of the XLR.
•If a CATV cable is connected to the system, try discon- necting it. If the hum goes away, call your cable carrier to check for proper grounding of the cable.
•Make sure the signal cable is not routed near AC cables, power transformers, or other EMI sources (including wall warts and line lumps!). These sources usually produce hum.
•Is there a light dimmer or other
•Excessive hiss is an indication of an incorrect gain set- ting somewhere before the speaker.
•If possible, listen to the signal source with headphones plugged in. If it sounds noisy there, it’s not the monitor.
Owner’s Manual
Manual