Cambridge Audio 551R user manual Troubleshooting

Troubleshooting

Alowhumorbuzzsoundcanbeheard

Powercordsorlightingplacednearthisproduct.

Analogueinputsnotconnectedsecurely.

Soundisnotaudiblefromonechannel

Speakerconnectionsdisconnected.

Speakersetto“None”inOSDsetupmenu.

Sound cuts off when listening to music or there is no soundeventhoughpowerisON

Speakerimpedanceislessthanprescribedforthe551R. Theunitisnotadequatelyventilatedandmaybeoverheating.

Lowbassor“phasey”response

Speakerpolarity(+/-)ofoneormorespeakersisreversed.

Anunusualhissingnoiseisheardwhenlisteningtoaradio broadcastinstereo,butnotheardwhenlisteninginmono

AslightnoisemaybeheardbecausethemethodusedformodulationofFM stereobroadcastsisdifferentthanthatusedformonobroadcasts.

Aerialqualityalsoeffectsthelevelofhissheard.

Noiseisexcessiveinbothstereoandmonauralradiobroadcasts

Poorlocationand/ordirectionoftheantenna.

Transmittingstationistoofaraway.

Nosoundfromtherearspeakers

Sourcebeingplayedisnotrecordedinsurroundsound.

Speaker/ssetto“None”inOSDsetupmenu.

Astereomodehasbeenselected.

Nosoundfromthecentrespeaker

Centrespeakerhasbeensetto“None”inOSDsetupmenu. Astereomodehasbeenselected.

Nosoundfromthesubwoofer

Subhasbeensetto‘Off’intheOSDsetupmenuorviatheremote.

DTS Neo:6, DD PLII/IIx modes (which have no LFE channel) have been selectedwithallspeakerssetto“Large”.

Remotecontrolisnotworking

Thebatteriesareflat.

Theremoteistoofarfromthereceiveroroutoftheeffectiverange.

No sound from speakers when connected to a digital input

Audio input type is set to analogue (check display). Press the Audio Input Typebuttontoswitchtodigital.

Nosoundfromspeakerswhenconnectedtoananalogueinput

Audioinputtypeissettodigital.PresstheAudioInputTypebuttontoswitch toanalogue(checkdisplay).

AudioinputtypecanalsobesetintheInput/OutputSetupmenuoftheOSD.

NoSoundfromanyspeakers

Receiverissetfor‘Pre-out’operation.

By entering the OSD menu, selecting the input/output setup menu, the Preampoutsettingcanbechangedfrom‘Normal’to‘Pre-out’.Thisdisables the internal amplifiers when an external decoder amplifier is being used. Resetthisto‘Normal’torestoresound.

NoSoundfromfrontspeakers,butrearspeakerswork

Receiverissetfor‘Ext2Ch’operation.

By entering the OSD menu, selecting the input/output setup menu, the Preampoutsettingcanbechangedfrom‘normal’to‘Ext.2Ch’.Thisdisables the internal amplifiers for the front channels when an external amplifier is beingusedtodrivethosechannels.Resetthisto‘Normal’torestoresound.

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