Emotiva Ultra UPA-7, Руководство по эксплуатации

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Troubleshooting Guide
The Emotiva UPA-7 is expertly designed and built to provide years of trouble-free performance. Most
problems that occur can usually be solved by checking your setup or making sure that the audio and
video components connected to the amplifier are on and fully operational.
The following information will help you deal with common setup problems you may experience during
normal use of your unit. If problems persist, contact Emotiva support for help.
No Sound (from one or more speakers connected to the UPA-7)
• Speaker cables may have come undone. Turn off your system and check the cables, tighten the
amplifier and speaker binding posts.
• Damaged audio cable.
• The preamplifier volume level is low for the channels concerned. Recheck the preamplifier
calibration procedure.
• A preamplifier Mute switch may be on, an external processor loop or a tape monitor loop is
engaged.
• Check that your preamplifier or source is running the correct surround mode. Maybe it is set for 2-
channel stereo when you were expecting 5.1 surround sound.
• Check if any missing channels have been turned off in a preamplifier setup menu. For example,
the center amplifier channel will not receive a signal if the preamplifier has been set to “Phantom”.
• If the unit is not on the ON/OFF switch on the UPA-7 might be in the off position.
• An internal fuse on the unit may have blown. Contact Emotiva Support for assistance.
The amplifier shuts down often or the line circuit breaker trips often
• Check that the positive and negative speaker wires are not shorted together.
• Make sure that no speakers are shorted internally. If you have an ohm-meter, disconnect the
speaker wires and measure the resistance between the speaker’s positive and negative
terminals.
• Measure all speakers and check their impedance specifications. If necessary, review the “Series
and Parallel Connections” section in this manual.
• If you have connected speakers in parallel, the overall impedance may be too low. It is
recommended that you rearrange the speakers in series to increase the overall impedance, thus
taking some load off the amplifier.
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