Marantz MODEL 40n Stereo 140W Integrated Amplifier (Black) - Manual (Page 82)

No sound comes out
No sound comes out of speakers.
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Check the connections for all devices. ( v p. 19)
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Insert connection cables all the way in.
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Check that input connectors and output connectors are not reversely connected.
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Check cables for damage.
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Check that speaker cables are properly connected. Check that cable core wires come in contact with the metal part on speaker terminals. ( v p. 20)
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Securely tighten the speaker terminals. Check speaker terminals for looseness. ( v p. 20)
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Check that the proper input source is selected. ( v p. 35)
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Adjust the volume. ( v p. 35)
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Cancel the mute mode. ( v p. 35)
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Check that the correct input source is selected when audio is being input to this unit from an external device. ( v p. 35)
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Check the digital audio output setting on the connected device. The initial settings may be off depending on the device.
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No sound is output from the speaker terminals or the preout connector when headphones are connected. ( v p. 9)
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Do not input non-PCM signals, such as Dolby Digital, DTS and AAC. This causes noise and could damage the speakers.
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To playback via a Bluetooth connection, perform pairing between this unit and the Bluetooth device. ( v p. 37)
Contents Connections Playback Settings Tips Appendix
82
Front panel Rear panel
Remote control
unit
Index