Pioneer Tuning Fork Service Guide

Discussion in 'Pioneer Audio' started by Carve it, Sep 4, 2009.

  1. Carve it

    Carve it Vintage Monster Addict

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    Thought I would post some items from the Pioneer Tuning Fork Service guides. These are items that I keep around for reference, 'cause I'm at the place where if I remember something new, then I have to forget something old (the wife actually expects me to remember what she tells me).
    I will add to this as I can and others please add what they use as reference.
    The pros can probably correct some of this info, the medium experience guys hopefully will find something useful and the newer guys it should help alot.

    If the quality is too poor, please let me know. I have had to resample and convert color modes to get the file size down. Any suggestions appreciated.

    If the mods think this is of little use or inappropriate, please let me know and I will cease and desist.

    Up first, a 5 page article on resistors from Tuning Fork #1.
     

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  2. DENNYDOG

    DENNYDOG Addicted Member

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  3. PacificStereo

    PacificStereo Super Member

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    Hey, this is good stuff. Scan the rest of these! (please!) :)
     
  4. Carve it

    Carve it Vintage Monster Addict

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    Up next will be an article from TF 1 on phono cartridges. Mainly because the SA-9500 II was released and it provided cartridge load switching via capacitance or resistance.
    Lots of math and graphs. I found the graphs showing a Shure V-15III frequency response under varying loads interesting.
     

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  5. Carve it

    Carve it Vintage Monster Addict

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    I probably should have started with this intro to Tuning Fork 1. The series was basically an educational effort by Pioneer to it's service techs. As far as I know there were at least 10 issues with some supplements as well. They contain about 8 articles each that range from 1 page to 20+ pages. Their complexity ranges from basic to math that I wouldn't want the job of proofreading for.
     

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  6. jdurbin1

    jdurbin1 Tandberg enthusiast Subscriber

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    I don't even own any Pioneer any more, and I still love this s*@t... keep 'em coming!

    John
     
  7. goat67

    goat67 AK Subscriber Subscriber

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    Is there one covering capacitors?
     
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  8. Carve it

    Carve it Vintage Monster Addict

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    I will keep them coming until either they ask me to stop or no one seems interested.
    The next issue begins with a 17 page article on capacitors and a 27 page article on Quartz-PLL directdrive TTs using the PL-570 as an example, discussing theory, service and troubleshooting.
    There are 4 more short articles from TF1 that I will post first.
    Beginning with a 3 page article on amp adjustment discussing neutral potential and idle current adjustments.
     

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  9. Carve it

    Carve it Vintage Monster Addict

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    Up next a 5 page article on the Decibel with conversion tables for microvolt to dB and dBf to microvolt.
     

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  10. udors

    udors Member

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    Please, more. They are going into my Audio Library and Reference Data
     
  11. Carve it

    Carve it Vintage Monster Addict

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    Here's the article on caps from Tuning Fork 2. It's in 3 parts.
     

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  12. mhilton777

    mhilton777 Well-Known Member

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    This is some great info. Thanks!
     
  13. Ed in Tx

    Ed in Tx Super Member

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    How many "Tuning Forks" do you have?
     
  14. miklemke

    miklemke AK Subscriber Subscriber

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    This is great stuff keep it coming.
     
  15. pioneernut

    pioneernut I need help

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    Excellent info. Thank you so much for posting this valuable information. I'm sure others who work on this stuff will find value in it. :banana:
     
  16. Carve it

    Carve it Vintage Monster Addict

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    I have 8 issues plus 2 of the supplements. Missing 4 and 5.

    I am surprised these articles aren't drawing more views. As I see it, they fall into the "teaching a man to fish and he eats for a lifetime" category rather than "giving a man a fish and he eats for one day".

    Anyways, here are 2 articles on Ohm's Law. One from the TF1 and one from TF2.
     

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  17. Carve it

    Carve it Vintage Monster Addict

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    Here are 2 articles on the Multimeter. One is from TF1 and the second from TF2 (it is broken into 2 parts). Pretty basic info, but still worth the read. The article from TF2 discusses testing components with a MM.
     

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  18. Ed in Tx

    Ed in Tx Super Member

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    These? :D

    [​IMG]


    I have 1 through 5 plus a Digital Supplement. If I had a way to scan them, I would add them to the collection. I wonder how many Tuning Forks were published altogether?
     

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  19. Carve it

    Carve it Vintage Monster Addict

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    Those would be the 2.
    I have the Digital as well as the Trouble Shooting Power Amplifiers supplements. I think there was also a supplement on the Video Laserdisc components.
    Number 10 is "Basic Technology of Amplifiers" and abandoned the format of several articles and doesn't even look the same as the previous 9. So my guess is it was either the end or pretty close to it. I don't know if MTF would have any idea on this.
    1 & 2 were called "Quarterly Audio Service Guide".
    3 -6 were called "Audio Service Guide".
    7-10 were called "Audio And Video Service Guide".
     
  20. Bigears

    Bigears Manager of my own day

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    Thanks so much!
     

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