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Kenwood DP-J2070 100 CD Changer Diagram / Repair Help

Dear Sirs! Kenwood DP-J2070 100 CD changer contains a small board named B/3. It is sized 1cm*2,5 cm and it contains a fork light barrier which is used to position the drive correctly in front of the CD's. As this board is broken into parts I gotta repair it. The Problem is that the 3 wires connecting the board to the unit have been removed before having marked them. Now I do not know how to solder what wire to which port. The B/3 contains 3 ports printed with -V, C and E. The drive offers 3 wires: 1 blue, 2 black. Please, can anyone help me how to connect the wires to the board? If someone had this player, he could easily find out to what port the blue wire is connected. To find out about the black wires it should be possible to measure voltage of both cables. It might also be very helpfull if someone has got a diagram of the unit. Thank you very much!

Posted by x-zoom on

  • x-zoom Aug 21, 2007


    The B/3 board is directly visible if you remove the front cover of the player. It is located at the lower left side of the moving player unit. Only a fork light barrier is assembled onto it.

  • x-zoom Aug 23, 2007


    Rohm 574 photointerruptor ist assembled onto the B3 board.
    Connections are:
    V- to pin 1 and 3
    C to pin 4
    E to pin2

    Blue wire measures 4,85V against first black wire. Mark this wire.
    Blue wire measures 0V against second unmarked black wire.
    Marked black wire measures 0V agains unmarked black wire.

    V- to blue
    C to unmarked black
    E to marked black.

    That's ist....



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  • 1 Answer

SOURCE: Kenwood CD changer wiring diagram

Posted on Jan 18, 2008


Mark Payas

  • 107 Answers

SOURCE: Playing CD-RW audio CDs on Kenwood DP-J2070

try to play a song from original cds.
maybe you brunt it in mp3 file, or its a different format. try to burn your song to cd-r.
if still, try to use nero to burner..
if it wont play your original cds and burnt cds,then the optical lens or the board is broken.
hope I helped you.

Posted on Jan 30, 2008


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