TROUBLESHOOTING
Problem: Amplifier does not turn on. Neither the red nor blue indicator lights are on.
Make sure that the amplifier is plugged in, and verify that there is the proper voltage at the wall outlet. Make sure the Main Switch § on the rear panel is in the On position.
Problem: The Standby Indicator ™ lights red, but it does not change to blue when the Power Switch ¡ is depressed.
If the amplifier is being used in a JBL Performance Series system, make sure that the surround processor is turned on, the Main Switch § is in the On position, and there is a connection between the AVA7’s Trigger Input ¶ and another device providing a power- on voltage trigger. Refer to the “CON- NECTING YOUR SYSTEM” section for reference. If the amplifier is not being used with a JBL Performance Series AV1 or any other source providing a
Problem: There is no sound from the speakers, but the amplifier is on (Standby Indicator ™ is lit in blue).
1.Make sure that the surround proces- sor or equalizer is on, and that the correct source has been connected and selected.
2.Make sure that the correct outputs are connected from the surround processor or equalizer to the amplifier.
3.Make sure that the speakers are connected to the correct terminals. Check for short circuits at both ends of the speaker cables.
Problem: Not all of the amplifiers turn on in the system.
1.Make sure that all required cables are connected between system components. Refer to the “CON- NECTING YOUR SYSTEM” section.
2.Make sure that each amplifier has its Main Switch § in the On position.
3.Make sure the Power Switch ¡ on each amplifier is in the On position (so that its Standby Indicator ™ is lit in blue when the cable is removed from its Trigger Input Jack ¶).
Problem: Insufficient sound output level from the speakers.
Check that the output levels of the sur- round processor or equalizer are set properly.
Problem: Insufficient bass.
Verify that the speakers have been wired to the amplifier with the correct polarity.
Problem: Audible hum from the speakers.
1.Check the power outlets and make sure that there is a solid earth ground present. (The services of an electrician may be required.)
2.Make sure that all signal cables are routed away from power cords.
3.If these suggestions fail, experiment by running ground wires between the
If you still encounter difficulty after trying the above suggestions, call your JBL Authorized Dealer or JBL at 1.516.255.4JBL for further assistance.
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