TROUBLESHOOTING GUIDE
TROUBLESHOOTING GUIDE
When a problem occurs, consult this guide first. If the problem persists, or you have additional questions, call your local Niles dealer or call Niles Technical Support at
SYMPTOM | POSSIBLE CAUSES AND TEST PROCEDURE | ||
Very low or no sound on | 1. | BusMatrix™ DIP switch is not in the correct position. | |
one channel. |
| Check your configuration worksheet and verify all | |
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| settings. | |
| 2. Audio cable to the input is bad. Connect the non- | ||
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| working channel to a cable known to be good. | |
| 3. | Bridging Switch is in wrong position. Check your con- | |
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| figuration worksheet for the correct setting and verify. | |
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No sound on one channel | 1. | Check that connections are secure and that there are | |
pair and channel pair LED is |
| no loose strands of wires crossing from the positive | |
quickly blinking red. |
| to the negative terminal at the back of the amplifier | |
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| and/or the speaker. | |
| 2. | Disconnect the speaker wire at both ends; separate | |
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| the 2 conductors at both ends and test with a meter | |
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| for a short circuit. If there is no short, connect the | |
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| two conductors at one end and test for continuity. | |
| 3. Verify that the impedance load of the connected | ||
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| speakers is not less than 2.66 ohms with an unbridged | |
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| channel and 4 ohms with a bridged channel. | |
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No sound on one channel | The amplifier module has overheated due to inadequate | ||
pair and channel pair LED is | ventilation or prolonged operation at clipping levels. | ||
slowly blinking red. | |||
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| 1. | Turn the amplifier off and allow the internal circuits | |
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| to cool. | |
| 2. | Check to ensure that there is sufficient ventilation for | |
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| the amplifier. After a reasonable time has passed, | |
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| turn the amplifier back on and check the LED again. | |
| 3. Lower the level controls for that channel pair. | ||
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No sound on one channel |
| The amplifier module requires service. | |
pair and channel pair LED is |
| Contact your Niles dealer for service information. | |
solid red. |
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