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Hi trying i have connected alpine 7871E to alpine fv340 amp. The radio works fine, but when the cd is used the power to the amp is disconnected - so no sound from the speakers. Is there a switch in the head unit that needs to be operated to get the cd sound signal to flow to the amp? Can the cd signal be bypassed any other way? Or is this cd headunit not suitable for connection to a separate amp?

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  • m4ddox Feb 13, 2009

    The wiring is ok - the radio & CD are the same head unit.

  • m4ddox Feb 14, 2009

    The problem is fixed some clown had connected the arial to the amp.



    Thanks

×

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Good to know the problem is fixed, please give us feedback.

Many thanks.

Posted on Feb 15, 2009

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Its not set up for a separate amp. i looked it up and also called an audio plcae here with the info you gave and its not set up for a separate amp.

Posted on Feb 13, 2009

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Recheck your wiring, it sounds like you may have had a connector come loose from behind the head unit.

Posted on Feb 13, 2009

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Is your amp connected using RCA cables?

Posted on Feb 13, 2009

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Hi!

Please hook up the remote wire and the power antenna wire to the blue factory amp wire. This will let you hear the sound when cd is played.

Thanks
Rylee

Posted on Feb 13, 2009

  • Rylee Smith
    Rylee Smith Feb 13, 2009


    After the above step is performed, then remove the detachable front panel. Behind the front panel, to the right of the connector, there is a small hole.

    Using a ball-point pen or other pointed object, press the RESET switch mounted behind this hole.



    This will reset your system and you will be able to haer the sound again from cd.

  • Rylee Smith
    Rylee Smith Feb 13, 2009

    See this connections diagram for your alpine 7871E---



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If you have your blue remote wire connected and it turns off still, then you can run it to a switch off the fuse block to the remote turn on to the amp, but connect it to a spot the works only when the ignition is on.

Posted on Feb 13, 2009

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Check all wires on this unit.

Posted on Feb 13, 2009

  • rockfixya
    rockfixya Feb 13, 2009

    There is no switch like you says. It seems there is some short connection between cd and radio amplifier.
    Check that using a bypass wire from cd to amp.

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