Troubleshooting & Maintenance
Lexicon
TROUBLESHOOTING
No front panel LEDs are lit.
1.Make sure the unit is plugged in and the rear panel power switch is set to on.
The Standby LED is flashing rapidly.
1.Power the amplifier off. Allow the amplifier to cool before powering it on again.
2.Check the incoming line voltage. It should not be more than 10% below the mains supply voltage indicated in the Specifications (page
One or more channels is not passing audio, and the corresponding channel status LED is flashing red.
1.Reduce system volume level.
2.Power the amplifier off. Allow the amplifier to cool before powering it on again.
A channel status LED is lit red.
1.Contact an authorized Lexicon dealer or Lexicon customer service.
The standby button does not appear to be functioning.
1.Make sure the rear panel power switch is set to on.
2.Make certain the rear panel TRIGGER INPUT switch is set to OFF.
One or more channels is not passing audio, but the corresponding channel status LED is lit blue.
1.Make sure the UNBAL/BAL switch is set to the connector being used (UNBAL for RCA and BAL for 1/4 inch or XLR).
2.Reduce system volume level.
Audio sounds out-of-phase.
1.Power the amplifier off with the rear panel power switch. Make sure the MODE switch is set to the current configuration.
2.Check to ensure proper speaker wiring.
A humming sound is present in the audio.
1. Set the GROUND LIFT switch to ON.
One or more channels is outputting distorted sound.
1.Reduce system volume level.
2.Check the airflow around the amplifier and take the following measures:
•Provide additional cooling.
•Make sure speakers have adequate impedance ratings (see page
The TRIGGER INPUT is connected to an external device, but the amplifer does not power on and off with the external device.
1. Make sure the TRIGGER INPUT switch is set to ON or DELAY.
