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Sony evo 9850 error code 20

Sirs: The tape loads into the 9850 unit. The tape loads around the drum. Then when play is pushed, the error code come up with # 20. Can you help me with this problem. I am an electronic technician of many years and have acces to scopes and meters. If you can down load a partial schematic as to the area of interest, it would be very much appreciated. Joe Wagner @ MID-CO A/V. Cell 612 720 2011. Thanks for the help. MY email is at work and at my home hoby shop.

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  • joemidco Jan 28, 2008

    Dear Wiz: Do you have any trouble shooting porcedure for this problem? I'm not understanding your approach to my problem. Do you just look on the internet, or are there technicians that can provide a trouble shooting procedure. Thanks, Joe Wagner

  • joemidco Jan 28, 2008

    Dear Early: I have checked all the caps on that board, and they all check to be in excelent condition on my Sencore capacity tester. I need more than a shot gun approach to this problem. Thanks, Joe Wagner



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From what i've read an Error-20 on a Sony BSP deck is a tape transport problem. Someone with the same error code (on a BSP model) said the actual tape loading mechanism was bad and they had to replace the hardware inside the machine that loads and ejects the cassette.

Posted on Jan 23, 2008

  • Steve Stonebraker
    Steve Stonebraker Jan 23, 2008

    This is all i could find..

    These people are saying error code 20 means:
    "tape feed error"
    "error 20 message is related to four electrolytic capacitors loacted on a small board on the interior left side next to the tape tray. You can remove and replace these"

    Here are links to these people discussing that error code:


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Hi, ive searched the internet but sad to say that i havent found any scematics for the evo 9850. there are also lots of other people having the same problem. i will continue to search and if i ever find a scematic relating to your query, ill post it right away.

Posted on Jan 23, 2008

  • earl norman llanera
    earl norman llanera Jan 23, 2008

    hi again,

    ive read this site which had this exact problem and what they did is completely dissassemble the part of the tape deck. once it is faulty, it may spread to other parts of your recorder. so in mind, this is your only solution.

    hope this helps. those errors codes were #20 and #90.



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