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TROUBLESHOOTING
The amplifier does not power on.
1. Make sure the rear panel Master Power Switch is set to the I ("on") position.
2. Attempt to activate the amplifier with the front panel standby/on button.
3. Examine the power cord to ensure a good connection between the rear panel AC
input connector and the wall outlet.
4. Check the electrical circuit.
One or more channels is not passing audio.
1. Reduce system volume level.
2. Power the amplifier off.
3. Check input connections.
4. Check speaker connections. Allow the amplifier to cool before powering it on again.
Audio sounds out-of-phase
Check to ensure proper speaker wiring.
Audio levels differ.
Check the settings on your preamplifier, processor or controller.
Audio plays, then cuts off.
Check speaker connections for short circuit at amplifier and speaker.
A humming sound is present in the audio.
1. If a cable TV connection is present, disconnect the cable from the wall outlet. If this
eliminates the humming sound, a ground loop isolation device is required. Contact your
dealer or the cable provider for assistance.
2. Disconnect components one at a time to isolate the problem. Once the problem is
identified, make sure the associated component is properly grounded and connected to
the same electrical circuit as the Model 7.125.
The TRIGGER INPUT is connected to an external device, but the amplifier does not
power on and off with the external device.
Verify the trigger cable is connected at both ends.
15
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