Meridian America 551 manual There is hum on the LP input, There is hum on other inputs

Page 36

Setting up the integrated amplifier

Communication is not working between the 551 Integrated Amplifier and other Meridian products

❍Check that all products are interconnected using the correct comms leads.

❍If the installation includes 200 Series or 600 Series units, check that all 500 Series units are set to 200 mode.

There is hum on the LP input

The LP input is the most sensitive input on the integrated amplifier.

❍Check that the tone arm is connected to the technical ground of the integrated amplifier.

❍Check that the tone arm is connected to the power ground in the turntable.

❍If you are using a magnetic pickup, check that there is not another piece of equipment too near to the turntable or the left-hand side of the integrated amplifier. If so, re-position the equipment to cure the problem.

There is hum on other inputs

❍Check your other equipment.

❍If you are unable to cure the problem consult your dealer.

There is interference on the radio and/ or television when the integrated amplifier is switched on

Before following the steps below, ensure all units are switched off.

If this equipment does cause or suffer from interference to/from radio or television reception then the following measures should be tried:

❍Reorient the receiving aerial (or antenna) or route the antenna cable of the receiver as far as possible from the 551 Integrated Amplifier and its cabling.

❍Ensure that the receiver uses well-screened antenna cable.

❍Relocate the receiver with respect to the integrated amplifier.

❍Connect the receiver and this product to different AC outlets.

32

Image 36

Contents Meridian 551 Integrated Amplifier Preface Contents Setting up the integrated Amplifier25 Introduction Professional features Meridian 500 SeriesSeries communications Sample configurations 506 20-Bit CD Player Compact Disc Transport566 20-Bit Digital to Analogue Analogue Controller Converter 562V Multimedia Controller Specification and accessories SpecificationAvailable accessories Introduction Using the integrated amplifier Front panel MuteTo switch on from standby To switch to standbySelecting a source CD65Adjusting the volume MuteOff CD55Changing the display and balance ²O³To change the display To change the balanceRecording a source CSrcCAtt To copy a source to the tape outputCustomising the integrated amplifier Choosing standard settings To select a standard settingType Standard settings VCR2Configuring the sources To configure a sourceConf CD1C To change an optionExamples of configuring the sources To change a source labelTo change the audio input for a source To set up a system with two CD players Programming levels GainTo balance input levels 12dB LP MM LP MCSpecifying information about your system AutoSA=1 PA=1Setting up the integrated amplifier Before connecting power UnpackingTo position the integrated amplifier Radio interferenceConnecting the integrated amplifier Back panelAudio connections Con To connect to a tape recorderTo connect to other Meridian 500 Series equipment NCon To connect to A500 LoudspeakersTo connect to Meridian 600 or 200 Series equipment Troubleshooting No lights are displayed when switching onSound has cut out and the display shows DC Sound has cut out and the display shows HotThere is hum on the LP input There is hum on other inputsMaintenance CleaningTo clean the case, display panel, and keypad To clean the audio connectionsService and guarantee ServiceGuarantee Cleaning IndexSound restoring Index