No sound is produced:
Check that:
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the correct input has been selected.
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the source equipment is on, is operating normally, and is in ‘play’ mode if appropriate.
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the volume is turned up to a reasonable level and ‘MUTE’ is not displayed on the front panel
display.
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your power amplier(s) are turned on and working correctly.
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you have assigned the digital input to the correct source button.
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If the HDMI connection is in use for video, have you made analogue connections for the audio?
If possible, plug some head-phones into the AV9. If sound can be heard through these, then the
problem in likely to be ‘down-stream’ of the AV9 (check your power-amps. and speakers). If no
sound can be heard through the headphones, ensure that the source (CD player, cassette deck, etc.)
is generating audio and has been selected on the AV9.
The sound is poor or distorted:
Check that:
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the cables to that source and to the power amplier are making a good connection. If necessary
withdraw the cable from the connector and plug it back in again. (Turn the power off before
doing this)
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you have not excessively reduced the input sensitivity on the ‘Input Trims’ page in the Setup
Menu if an analogue input has been selected. Check that the input is not clipping by using the
‘Analogue Settings’ page.
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you have selected the correct size of speakers to suit your system on the ‘Speaker Sizes’ page in
the Setup Menu.
Sound only comes from some of the speakers:
Check that:
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you have an appropriate surround sound source selected and playing.
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the DVD disc is encoded in the appropriate format, and that the correct format has been
selected in the Disc start menu of the DVD player (if applicable).
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the DVD player has been set to output ‘Bitstream’ audio on the digital output.
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the display window indicates that the disc you are playing is a multichannel recording.
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all the speakers are correctly connected to the power amp, and are secure.
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you have not selected ‘Stereo’ in the mode selection.
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your speaker balance is correct.
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all ampliers are turned on and all channels are working correctly.
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after setup, that you have congured your AV9 to include all the speakers in your system.
Unable to select Dolby Digital or DTS decoding modes:
The AV9 can only apply Dolby Digital and DTS decoding to sources which have been encoded in the
same format.
Check that:
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a digital source is selected and connected.
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the source is playing appropriately encoded material.
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the DVD disc is encoded in the appropriate format, and that the correct format has been
selected in the Disc start menu of the DVD player (if applicable).
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the DVD player has been set to output ‘Bitstream’ audio on the digital output.
When playing a Dolby Digital DVD, the AV9 selects Dolby Pro Logic:
Check that:
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you have a digital connection from your DVD player.
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sometimes Dolby Digital DVD discs contain material at either the beginning or the end of the
main movie that is not in full 5.1 format, but in two-channel or Pro Logic encoding.
Hum on an analogue input:
Check that:
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all cables are making a good connection. If necessary withdraw the cable from the connector and
plug it fully in again. (Turn the power off before doing this)
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the connections inside the source cable connector are not broken or badly soldered.
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if the hum originates only when one particular source component is connected, that an aerial,
cable or dish connection to this source is ground isolated. Contact your installation contractor.
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try switching the ground lift switch on the back panel.
There is radio or television reception interference:
Check:
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where the interference is coming from. Switch off each source component in turn, then any
other equipment. Most electronic equipment does generate low levels of interference.
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try re-arranging cabling from the nuisance source away from other cabling
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ensure that the cabling used is high quality, specied for its purpose, and is properly screened.
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if the problem persists contact your installer.
