Servicing a SONY DAT machine (Pictorial)

Discussion in 'Tape' started by SaSi, Sep 17, 2008.

  1. RMbA

    RMbA New Member

    Messages:
    37
    I don't understand the reference to red and blue circles.

    On the lower half, I can see a black gear-arm with a white washer in place. The end of that gear arm is adjacent to the gear on a white gear-arm. Both have washers and seem to be moving freely. FWIW, the sliding mechanism seems to move freely.

    But I don't see the brake levers from this viewpoint.
     
  2. hdrobien

    hdrobien Active Member

    Messages:
    429
    Location:
    France
    Red circles show the shafts and axles to be cleaned from old grease.

    The blue circles show the washers that have to be "glued" with nail lacker (the left one on the white gear-arm is already missing). This part of the sliding mechanism is always fine. The problem is with the gears that drives it. When the transport is opened, these gears are on the other half (red circles).
     
  3. RMbA

    RMbA New Member

    Messages:
    37
    Thought I already sent this reply, but maybe not because there's nothing after your last.

    I don't understand the references to red, blue, and green circles.

    I cleaned the two shafts, but my Q-tips didn't show any grease, etc. The gear assembly seems to have a little more inertia, but turning the gears seems to take a good deal more effort than trying to turn the black gear alone before disassembling the unit.

    The two washers were in place on the two gear-arms and the mechanism seemed to move freely and as it should (from what little I know!). The slider mechanism also moved freely.

    From this viewpoint, I don't see the brake levers to check the felt pads. Actually, I can't seem to see them from any view of the chassis. What am I missing here?
     
  4. RMbA

    RMbA New Member

    Messages:
    37
    I don't see any colored circles.

    I'm also wondering about the switches in this assembly—whether they're working as they should. But I only see two (next to the large white pulley and belt that open the DAT loading bay.
     
  5. hdrobien

    hdrobien Active Member

    Messages:
    429
    Location:
    France
    The colored circles are on the picture below.

    photo6_redimensionner_redimensionner.jpg
     
  6. RMbA

    RMbA New Member

    Messages:
    37
    I guess the pix was there all the time, but I hadn't realized I had to move to the next page—noob!

    By the way, I had a three-head, three-motor Nakamichi many years ago—I think it was a 582Z (but not sure)—and I regret having sold that machine when my head was turned by CDs.

    Now I see brake levers and that the felt pads are in place.
     
  7. RMbA

    RMbA New Member

    Messages:
    37
    Well . . . it's put back together (which, although your directions were excellent, I regard as a minor miracle!). And although the deck still doesn't PLAY or FF or REW, and there's still a Caution, now the door will open when there's a tape inserted, which it would not do before. Sometimes when the tape is reinserted, the counter begins to count a couple of seconds, but then Caution reappears. Once the Caution comes on, it's necessary to power the unit off in order to get the ejection mechanism to work again and eject the tape.

    Do you think that switches might not be working properly and, if so, how do I find them?
     
  8. RMbA

    RMbA New Member

    Messages:
    37
    Stop the presses! I cycled the door a dozen times and the unit is now working in the play mode! Now, all functions seem to be working normally.

    The audio sounds great. Only problem is that the phones pot is noisy, which maybe can be fixed with Deoxit.

    I'm really in your debt for your time, technical know-how, and kindness to share it with perfect strangers.
     
  9. hdrobien

    hdrobien Active Member

    Messages:
    429
    Location:
    France
    Great !

    The phone pot is always noisy on Sony DAT. Just spray Deoxit and rotate it a couple of time.
     
  10. RMbA

    RMbA New Member

    Messages:
    37
    Thanks again!
     
  11. RMbA

    RMbA New Member

    Messages:
    37
    I'm not seeing more than an extremely small opening for the Deoxit. Is it necessary to do some kind of disassembly?
     
  12. hdrobien

    hdrobien Active Member

    Messages:
    429
    Location:
    France
    No disassembly. Just shower it.
     
  13. RMbA

    RMbA New Member

    Messages:
    37
    OK—thanks.
     

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