HF636P, JDW HI-FI schematic please

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  • zen
    Badcaps Veteran
    • Apr 2011
    • 511

    #1

    HF636P, JDW HI-FI schematic please

    Hi all

    This unit not ejecting CD tray.

    No motor/mechanical noise at all, therefore, might be a supply issue.
    Attached Files
  • zen
    Badcaps Veteran
    • Apr 2011
    • 511

    #2
    Re: HF636P, JDW HI-FI schematic please

    On connector CON 7, measured 5V4 at pins marked MO + & MO -

    Could be for tray motor but need to strip out this 3 CD tray mech to find out.

    DOOR ERR appears in display.
    Attached Files

    Comment

    • zen
      Badcaps Veteran
      • Apr 2011
      • 511

      #3
      Re: HF636P, JDW HI-FI schematic please

      Bit of a chore to strip mech out.

      Tested voltage directly at tray motor pins & 5V4 present.

      Gave the motor a little tap & the mech sprang into action.

      Need I say more?
      Attached Files

      Comment

      • lotas
        Badcaps Legend
        • Jan 2016
        • 4670
        • Russia

        #4
        Re: HF636P, JDW HI-FI schematic please

        Most likely stretched pasik (rubber belt) on the motor.

        Comment

        • zen
          Badcaps Veteran
          • Apr 2011
          • 511

          #5
          Re: HF636P, JDW HI-FI schematic please

          Thanks very much for your input Lotas

          Not belt this time.

          Cleaned brushes & lubricated bearings with a very fine watchmaker oil.

          Working on test.

          Comment

          • zen
            Badcaps Veteran
            • Apr 2011
            • 511

            #6
            Re: HF636P, JDW HI-FI schematic please

            Also replaced tray motor belt as it felt slightly slack.
            Attached Files

            Comment

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