XTZ SA-1, Руководство пользователя

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If you should experience a problem with the operation of your subwoofer, please check all of the following
before seeking service. Following is a simple troubleshooting guide to assist you.
NOTE
1. Verify unit is plugged in and that the power outlet used supplies the proper AC voltage & current.
2. Is the power switch on?
3. Has the external fuse blown? Unplug the power cord from the amplifier, then use a small screwdriver
to remove the fuse holder cartridge (located below the cord connection), and inspect fuse for damage. If
blown, replace with the same type & value fuse.
4. Is the auto turn on/off properly set for the inputs used?
5. Is the subwoofer receiving an input signal from your source equipment?
6. Have all controls on the subwoofer (volume, crossover, phase, etc.) been
properly set?
7. Is the volume control properly set to match source signal level?
8. If the subwoofer has been running at high levels for an extended period of time, one of the protection
circuits may be engaged;
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Does the built-in amplifier panel feel extremely hot (located on the rear of the cabinet)?
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Is your AC power line circuit sufficiently rated to supply adequate VA required for full amp output? If
your power line is not capable of supplying enough energy, the maximum output power will be reduced
& distortion may become audible.
9. If the protection circuitry is active, the unit may cycle on and off until operating parameters return to
normal. Under more serious conditions, the unit may shut off completely. Normal operation should return
upon cooling, but depending on the type of fault condition you may be required to turn the main power
switch off for several minutes and then back on again to reset the unit.
10. If the unit exhibits a drastic change in output sound, after you check the items above you may wish
to perform the steps below to assist in troubleshooting by verifying the proper operation of both amplifier
module and driver;
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Turn on your audio equipment, except for the subwoofer’s main power switch, which should remain
“OFF”
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Prepare to play a 20 to 30Hz sine wave (test tone) from your CD/DVD test disc, smart-phone, comput -
er, or other signal source (note: if you do not have this type of test signal, contact customer service or
your place of purchase for assistance)
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Adjust the volume of your equipment & the subwoofer to a medium-high volume level
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Start playing the test signal
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Prepare to carefully listen to the subwoofer’s low frequency output (make sure the room is quiet)
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Turn the subwoofer main power switch “ON”
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After a couple of seconds, you should hear amplifier & driver start playing in a loud, somewhat uncon -
trolled fashion, with extra harmonics (warmer fuller sound that normal)
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Turn down the volume or stop the test signal after a few seconds
The above process helps determine if both amps & drivers are functional. If there is no change from the
2nd amplifier and driver powering up, repeat the test. If you are still unable to hear the 2nd driver and
amp power up, further troubleshooting by a qualified technician may be required.