Question about Panasonic RX-D12 Cassette/CD Boombox

3 Answers

Error code U01

Dear all. The Panasonic RX-D12 have on display error code U01 and doesn't work in any option. I've found transistor Q308 but I haven't service documentation therefore apply to you If you could help me to identify type of this transistor (PNP or NPN and parameters). Best regards

Posted by Tomhas1 on

  • 2 more comments 
  • Tomhas1 Sep 09, 2007

    Could you please send me this manual?
    Thank you

    Best regards

  • Tomhas1 Sep 10, 2007


    [email protected]

    Thank you

  • Georges38 Jan 20, 2008

    I have identical problem: on power up, a Panasonic RX-D21 CD-Tuner-Cassette player shows code U01, does not respond as Tuner or CD player. It can read audio cassettes but vith very low volume output.

    Does the code mean anything?

    I could download a manual from

    but it does not mention the error codes.

  • Georges38 May 11, 2010

    Addressing TVtechmaniac:

    I saw your proposal of Sept 09, 2007 to Tomhas1 to send the service manual for Panasonic RX-D12. What I have is a Panasonic RX-D21 CD-Tuner-Cassette player (see my post of Jan 20, 2008). Do you think that the service manual for RX-D12 could help me? I do not dare to hope that you also have the service manual for RX-D21.

    In any case, my Email address is [email protected]

    With all my best wishes, and a great hurrah for such a site and forum to exist.



3 Answers


Hi TVtechmaniac Thank you very much for posting the ref of transistor and to propose the service manual. My Email address is: [email protected] It replaces the one I gave earlier. I would really enjoy getting the tech. manual.

Posted on Oct 02, 2008



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Q308 is KRA102MTA


Posted on Oct 01, 2008


David Makowski

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The part# for Q308 is KRA102MTA I have the service manual if you want it

Posted on Sep 09, 2007

  • David Makowski
    David Makowski Sep 09, 2007

    I need an email address to send you the pdf file


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