Lexicon RV Receiver manual Humming sound is present in the audio

RV-5 Troubleshooting & Maintenance

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 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 RV-5 Receiver.

RF interference is present in the audio or video.

1.Make sure the RV-5 is not positioned too close to RF-emitting devices.

2.Move such items one at a time to isolate which device is causing the problem.

3.Replace unshielded cables with shielded cables wherever possible.

Audio sounds distorted when using analog audio inputs.

The likely cause for distorted audio while using the analog audio inputs is that the input voltage is too high. The RV-5 analog inputs have a maximum rating of 2 Vrms. Any input voltages higher than this limit will exhibit audible distortion.

To correct the problem, reduce the analog audio output from the connected device using the volume or level control. If neither is available, an intermediate device may be required. Contact your Lexicon dealer for assistance.

In the SEMI AUTOCAL Test, the Far Field Test keeps failing.

1.Ensure that the microphone is placed in your preferred seating location.

2.Ensure that the volume is set to -20dB.

3.In the Speakers Menu, ensure that none of the speakers connected to the system have a cross-over selection of NONE.

During the Far Field Test, test tones are sent to ALL speaker locations, regardless of the settings identified in the Speakers menu. Therefore, every speaker that is plugged in MUST have a cross-over setting other than NONE for the Far Field test to be successul. If a cross-over is set to NONE but the speaker is plugged in, the test will fail because it will “see” a speaker that is identified as having no cross-over point.

4.Refer to the “AUTOCAL Error Messages” section found later in this chapter for more information about specific error messages related to the AUTOCAL process.

The volume won’t go to the +10 dB maximum level.

The speaker output level settings may affect the maximum volume level of the RV-5 Receiver. The maximum volume level is +10 dB minus the maximum output level setting of any speaker. Thus, if your front L/R output levels are set to +3 dB, the maxium allowable volume level is +10 dB minus 3 dB, or +7 dB.

The picture on the video monitor is all red.

This is a synchonization problem when using HDMI. When the source device and video monitor do not sync correctly, the color spacing may not load correctly. When the monitor color is all red, or all green, it means that only half of the color spacing data was loaded into the video monitor.

To correct the problem, simply enter the OSD menu and then exit out again. This will resync the video and should clear the error.

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