Question about Clarion DXZ645MP CD Player

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Amp guard cd player turns on but produces no sound when u urn volume up or down it says "amp guard" the manual say to reset it but that dont work

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  • Anonymous May 03, 2008

    Amp guard is on and no sound, but like once and a while it will come on for about ten minutes then turn off! what the f!

  • Anonymous Aug 12, 2008

    same as above

  • Anonymous Jan 05, 2009

    tengo problemas con mi radio clarion no sale el sonido y sale en la pantalla amp guard.

    como puedo hacer para solucionar mi problema

    el modelo del clarion es DUZ 385SAT

  • Anonymous Apr 21, 2009

    cd player turns on but produces no sound when u urn volume up or down it says "amp guard" the manual say to reset it but that dont work



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Other sites I've read about this problem suggest that first you try checking the wiring to the speakers for a fault to ground OR you have speakers with too low impedance. If those check out ok, the unit needs to go back for service.

Posted on Jun 01, 2008


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How to tune properly

make sure your speakers are wired to the amp with correct ohm load, turn gain, bass boost all the way down on amp, zero out your equilizer on the cd player and turn it all the way down then start raising volume on cd player., when u can start hearing music thru the subwoofers adjust the cd player volume till the sound from your subs is at its peak without any distortion. then start raising the gain on your amp till you are happy with the sound. It gives you the optimal signal strength coming from the cd player and the smoothest sound.

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It says amp guard when i turn it up

Sounds like you have speakers that are wired incorrectly. Most car stereos require a 4-ohm load, if you wire two standard speakers in parallel it will create a 2-ohm load and cause this condition.

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My jvc kd-g820 will not produce any sound and not accept cd

try to find the reset a little indent on the face or hole when you remove the face and push in for 2 to 3 secs with a pen or paper clip. Then try your cd again. Still dont work check to see if you have another cd jammed inside and your trying to put two cds at once.

Ok for your no sound problem. a bad speaker, short speaker (one 1 speaker shorts out all will not work cause the radio is in a protective mode), factory amp needs to be turned on, bose system or amplified system in car needs to be rewired to bypass factory amp), buy special car harness to make factory amp compatible with aftermarket radio, late ford models the back speakers are crisscrossed.

Next time please give car info and type of system you got in it so I could narrow down the possible problems a little bit easier.

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1 Answer

I have a DXZ648RMP Clarion car Stereo that says amp guard

, the message you are getting is "amp guard". This is the mesage it will display when a short in a speaker wire or speaker with low impedence is hooked to the internal amp and sends it into protect mode, shutting down the amplifier section while the rest of the unit continues to work.

check all of your speakers

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No Sound

go to standby hold m-log button tell menu comes on display press up on volume control tell amplifier comes on display pess left on volume control tell display says amp on. the built in amp on the stereo turns of and on to provide better sound quality to the pre-amp out puts

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check the remote wire(the blue with white) is it giving 12 volts to the factory amp? some ford have amps that needs to turn on when the radio turns on.

Mar 17, 2008 | Alpine CDA-7863 CD Player

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The source volume is too high or output from source is too powerful or the receiver is damaged. Try turning the volume down on the source device (cd player/dvd/satellite receiver etc) and recover the overall volume by turning the amp up. Also if the source device has any tone controls, return them to a flat setting, again using the amp to recover the sound richness.

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1 Answer

Technics cd player

It sounds like maybe your CD player is now connected to a different input on your amplifier. In such a case, if you turn the amp right up you will just about be able to hear any other sources that are connected & sending audio to the amp.

Turn the amp down to a sensible volume (to avoid possibility of heart attack from the shock of the loud music suddenly returning!), and flick through the other inputs on your amp. If this doesn't help, check your connections & make sure the CD player isn't connected to the tape in or out on your amp.

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1 Answer

Message: amp guard

That means the unit went into protect mode because of a fault in the amp of the unit. This will need to be serviced. good Luck

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