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Thread: My Sony XA-300 Fix

  1. #11
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    Here you go. One circuit diagram to help you along. Sorry for the poor image but doing this in the middle of doing 10 other things!



    I may get to improve the image and make it a smaller file size at a later date

    For larger photos of the originals check out:

    big1.jpg
    big2.jpg

    If any of you manage to get this working with standby then I would like to know. I'm running win2k which tends not to like returning from standby when connected to the XA-300. Other than that I'm pleased it's working!

    And if you are interested I'm in the process of putting my web site together, still lacking pictures but will be updated soon www.farrage.net

  2. #12
    FreeDrive Creator CdRsKuLL's Avatar
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    unsure if the xp sp2 rc1 update would help, I in two minds if to try it or not as it messes with the bluetooth driver stack

    CdR

  3. #13
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    I had mentioned in my earlier post that I also had worked out how to change the input used to feed the headphone socket. This is a feature of the XA-300 to output whatever is fed into AUX in 1 to the headphone socket. This is so people could listen to an alternative source through headphones while you have something different selected from the head unit.

    I plan on being able to listen to the radio from the headunit while at the same time being able to hear the spoken directions from the GPS software through a small speaker. So, to do this I need to be able to hear the sound from the USB input rather than Aux in 1 by default.

    I must point out at this stage that I have not tested this although these changes are not major and it should be possible to reverse the solution should you need to. As as addition to what I will describe here you can fit a selection switch so that you can select between AUX in 1 and USB to feed to the headphone output should you need to.

    Firstly you will need to make 2 track cuts to cut off the feed from Aux in 1 from feeding into the headphone amp chip. These 2 cuts are indicated with a red mark in the diagram below. Secondly you will need to solder 2 wires, one to the left of capacitor C704 and the other to the left of C707 as indicated with the blue lines on the diagram. Note that I have marked these wires as X and Y. The tracks from the other side of the capacitors go off to the headphone amp chip.



    The next thing to do is solder the other ends of the wires X and Y to the locations shown in the diagram below. No track cuts are needed here. Please make sure you get X and Y the correct way round. Not a big deal if you don't as these are simply the left and right channels of sound.



    And that should be it. If anyone does try this out then be sure to let me know the results. Also, to put your mind at rest a little, the buffer chips used to buffer the sound from both the AUX in 1 and USB inputs are identical (IC4 and IC6). All we are doing here is swapping over which of the buffer chips feeds the headphone amp.

    Good luck

    (Advisory: As before, any changes you make are at your own risk and are not my responsibility. I have not yet tried this modification)

  4. #14
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    Let me just say this fix has greatly helped with my carputer! I'm now able to go into standby and have greatly clear audio. I am having one problem and I do not yet know if it was caused by this.

    Is it possible for this to lock up the computer or freeze it? Also.. at the time I forgot to remove the tracing on the circuit board.. is this bad? It works fine.. but should I still remove it?
    http://www.AJQuick.com/ - Fiberglassing Tutorials!
    My Cardomain Page - 1998 Dodge Neon R/T

  5. #15
    Newbie Ninety8NeonACR's Avatar
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    Quote Originally Posted by AJ Quick
    Let me just say this fix has greatly helped with my carputer! I'm now able to go into standby and have greatly clear audio. I am having one problem and I do not yet know if it was caused by this.

    Is it possible for this to lock up the computer or freeze it? Also.. at the time I forgot to remove the tracing on the circuit board.. is this bad? It works fine.. but should I still remove it?
    What are you doing on this site? You must be copying me. I did join the site first.

















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  6. #16
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    Quote Originally Posted by AJ Quick
    Let me just say this fix has greatly helped with my carputer! I'm now able to go into standby and have greatly clear audio. I am having one problem and I do not yet know if it was caused by this.

    Is it possible for this to lock up the computer or freeze it? Also.. at the time I forgot to remove the tracing on the circuit board.. is this bad? It works fine.. but should I still remove it?
    I've not experienced any issues with lock up or freezes except when going to and from standby. Hibernation works just fine. The fix does not change the behaviour of the XA-300 USB sound chip so you should not expect to see any lock up issues.

    I cut the track just so I was sure I would not overload the USB sound chip with too much power. The track normally supplies 5v to the sound chip. I did not want to get this mixed with the 5v from the USB cable nor did I want to send 5v back down the USB cable when it was not wanted. It's up to you but to be on the safe side you may want to cut the track.

    And thanks for the feedback, it's good to know this is helping you all.

    Magpie

  7. #17
    Maximum Bitrate tom2112's Avatar
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    Magpie:

    Can you repost those pictures? I FINALLY got around to pulling my XA-300 out of my dash and when I came in the house to mod it, I couldn't find your pics. So I came to the forum, and they're gone here too! Doh!!

    TIA,
    Tom
    So far:
    M10000 Nehemiah, 1Gb RAM, Opus 90w PS, Buffalo Tech WLI2-USB2-G54, 160 Gb HDD, GlobalSat BU-353 GPS, iGuidance, Zippy EL-610, Panasonic CW8123B Slim Slot CDRW/DVD, 10" Lilliput, Sony XA-300, Sony CDX-MP30 Head, OBD-II

  8. #18
    Maximum Bitrate tom2112's Avatar
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    Can someone PLEASE repost those pics of the inside of the XA-300? I've got my dash all torn apart and would like to finish the mod and get it back together for the Monday morning drive to work!

    TIA,
    Tom
    So far:
    M10000 Nehemiah, 1Gb RAM, Opus 90w PS, Buffalo Tech WLI2-USB2-G54, 160 Gb HDD, GlobalSat BU-353 GPS, iGuidance, Zippy EL-610, Panasonic CW8123B Slim Slot CDRW/DVD, 10" Lilliput, Sony XA-300, Sony CDX-MP30 Head, OBD-II

  9. #19
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    Pictures have now been updated....

  10. #20
    Well, He asked for it. WebDog's Avatar
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    Great mod! i was a lil hesitant is playing in my XA-300 but i finally did it and it works great now... dont know why i waited so long to do it.

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