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Thread: Kenwood Cd-Changer To AUX. Input

  1. #41
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    Quote Originally Posted by BenGDoG3851
    i dont think its your audio cables. i think "ch no" might mean no changer or something. u sure u've got the right size resistor?

    kevinlekiller how did you or your source come to the conclusion that 10k was best? was this measured sumhow? if so maybe the problem with SlimMJS is that the resistor is not tricking the HU into fully thinking its a changer. like it can see something but not a proper changer.
    CH NO means that the HU recognise something attached to the AUX IN , but the HU is waiting for the serial response from the charger.
    If u look carefully to the pinout you can see 2 pins , I2C serial bus out and in.


    CYA
    simons

  2. #42
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    Quote Originally Posted by simonspt
    CH NO means that the HU recognise something attached to the AUX IN , but the HU is waiting for the serial response from the charger.
    If u look carefully to the pinout you can see 2 pins , I2C serial bus out and in.
    correct! That's why my "fake changer" works great. I will be upgrading my HU in the next few days at which point I might be selling my custom adapter

  3. #43
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    Quote Originally Posted by fstedie
    correct! That's why my "fake changer" works great. I will be upgrading my HU in the next few days at which point I might be selling my custom adapter
    U mean that the cable works even if the HU says "CH NO" ? the R and L pins are enabled in that case?

    CYA
    SIMONS

  4. #44
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    YES!

    it will say E99 because it thinks it has a malfunctioning changer but the audio channels are still open!

  5. #45
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    interesting! but I need the circuit board to do that? do you have a layout or a schematic for that board ?

  6. #46
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    I've given up. If I have to make some circuit board to get the aux-in to work, I'm not going to bother. It doesn't seem like it should be that hard! I'm heading out to get the least expensive head unit with aux-in at best buy... thanks for all the help fellas!

    --matthew

  7. #47
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    Quote Originally Posted by simonspt
    interesting! but I need the circuit board to do that? do you have a layout or a schematic for that board ?
    The circuit board is the guts of a Kenwood CD changer. You are basically sacrificing the changer for the sake of getting an aux input. Since I won't really need the changer now that I am using my ipod, I didn't mind sacrificing an old unit. I've even seen them on ebay for under $20.

  8. #48
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    Question

    how will i supply the 14v 12v and 5volt at the same time?
    in the diagram that "simonspt" posted.i couldn't really understand that.Do i have to supply 12 volt and 5 volt?Or that L7805 in the diagram can do that?

  9. #49
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    i tried that on my KRC-385 but didn't make any sense except "CHno" message.
    i can't hear any sound although i used the pin diagram in the beginning.

  10. #50
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    this won't work with older HUs

    remember, the older head units look for a clock signal from the CD changer, it won't help much to use this circuit. the "fake" changer is about the only way to go unless you can g enerate the correct clock signal independently...

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