Mackie 802-VLZ4 Owners Manual - Page 22
Appendix A: Service Information, Appendix B: Connections
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802VLZ4 Appendix A: Service Information If you think your 802VLZ4 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.720trees.com) where you will find lots of useful information such as FAQs and other documentation. You may find the answer to the problem without having to send your mixer away. Troubleshooting Bad Channel • Is the gain set correctly? • Is the level knob turned up? • Is the instrument switch set correctly? (Channels 1-2 only). • Try the same source signal in another channel, set up exactly like the suspect channel. • Check that the pan knob is set correctly. • Check the EQ and the low-cut switch. Bad Output • Is the associated level knob (if any) turned up? • If it's one of the main outs, try unplugging all the others. For example, if it's the 1⁄4" left main out, unplug the RCA and XLR left outputs. If the problem goes away, its not the mixer. • If a left speaker is presumed dead, switch the left and right cords, at the mixer's main outs. If the left speaker is still not working, it's not the mixer. Noise Repair For warranty service, please refer to the warranty information on page 27. Non-warranty service is available at a factoryauthorized service center. To locate the nearest service center, visit www.720trees.com, click "Contact Tech Support" and select "Locate a Service Center or Distributor" [3]. Service for an 802VLZ4 living outside the United States may be obtained through local dealers or distributors. If you do not have access to our website, you can call our Tech Support department at 1-800-898-3211, Monday-Friday, during normal business hours, Pacific Time, to explain the problem. Tech Support will tell you where the nearest factory-authorized service center is located in your area. Appendix B: Connections Balanced XLR Input Connector The 802VLZ4 mixer has three female XLR inputs. Be sure the cables are wired per AES (Audio Engineering Society) standards: Balanced XLR Input Connector Pin 1 - Shield (Ground) Pin 2 - Positive (+ or hot) Pin 3 - Negative (- or cold) SHIELD 2 HOT • Turn the channel level and aux return knobs 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. Power • Check that the supplied power supply is connected to a live AC outlet. The power LED on the mixer should come on when the power switch is on. COLD 3 1 1 3 2 SHIELD COLD HOT Balanced XLR Input Connector Balanced XLR Output Connector The male XLR connectors provide a balanced linelevel signal that represents the end of the mixer, where the fully mixed stereo signal enters the real world. Connect these to the left and right line-level inputs of powered speakers or to the left and right line-level inputs of an amplifier (with speakers already attached). 22 802VLZ4