Troubleshooting
PROBLEM
CONDITION
CAUSE
| Rear Power Status LED is off. | • Amplifier not plugged in | |
| • AC outlet dead | ||
UNIT APPEARS |
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| • Power Switch off | ||
DEAD |
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(NO FRONT | Rear Power Status LED | • Breaker (Power Switch) tripped | |
- Turn off, then turn back on | |||
STATUS LED) | is amber. | ||
| • Power Sequencing Switch set wrong | ||
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| - Check Sequential | |
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| Master amplifier ON (Rear |
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| Power Status is green), |
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| slave amplifiers in chain not | • No AC power to amplifier | |
| powering ON (Rear Power |
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SEQUENCING | Status is off). |
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NOT |
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FUNCTIONING | Master amplifier ON (Rear | • Power Switch is off on slave amp | |
CORRECTLY | |||
Power Status is green), | • Breaker (Power Switch) tripped | ||
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| slave amplifiers in chain not | - Turn off, then turn back on | |
| powering ON (Rear Power | • Rear Power Sequencing Switch is not ON | |
| Status is amber). | • Error in Sequencing wiring between amplifiers | |
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| Status LED is green. | • Level Controls turned down | |
| • No signal from source | ||
| Signal LED is off. | ||
| • CH B Input Select not set or wired properly | ||
NO SOUND |
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Status LED is green. | • Poor/broken speaker wiring | ||
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| Signal LED is green. | ||
| • Defective speakers | ||
| Limit LED is off. | ||
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| Status LED is green. | • Input signal level too high | |
| • Poor speaker connections | ||
| Signal LED is green. | ||
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| Limit LED is off. | ||
DISTORTED | • Input Sensitivity Switch not set correctly | ||
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SOUND | Status LED is green. | • Speaker transformers saturating at low frequencies, | |
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| Signal LED is green. | filter off, need additional | |
| Limit LED is amber (on or | • Below minimum load rating on output | |
| flashing). | • Exceeding maximum power output rating | |
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| • DC level at signal input | |
INTERMITTENT | Status LED is red/green cycling. | • Load impedance too low | |
OPERATION | • Amplifier speaker output is | ||
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| • Amplifier too hot (check for proper ventilation clearances) | |
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| • Poor electrical connections at input | |
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| • Input cable routed near AC cables, power transformer, or | |
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| other EMI radiating devices | |
NOISE/HUM | Status LED is green. | • Electrically noisy devices operating on the same AC circuit | |
Signal LED is green. | • Poor equipment grounding | ||
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| - Ensure that all AC safety grounds are connected | |
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| - Make sure that all components in audio chain are tied to the | |
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| same ground | |
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