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PowerBook Superdrive vibrating

Discussion in 'General Mac Discussion' started by 7on, May 21, 2004.

  1. 7on
    macrumors 601

    7on

    #1
    My powerbook seems to vibrate under some circumstances
    (i.e. a video DVD until I opened the DVD Player.app, and a CD-R with a sticker on it)
    Is this normal, or has happened to others? Like my whole deskshakes and I can feel the vibrations in my trackball down on the pullout keyboard drawer. I have a feeling the sticker prolly might do it, but that doesn't explain the commercial DVD nor a public speaking textbook CD help disk.
     
  2. macrumors 65816

    aussie_geek

    #2
    7on,

    When you put a cd in the drive, the computer spins it up so it can read it. Not all cd's are perfectly round so you will feel a vibration due to the torque forces when spinning a non round object. You say that it doesn't vibrate so much when you are watching the dvd - this is because when watching it the drive does not have to spin it that fast to read it.

    aussie_geek
     
  3. Moderator emeritus

    #3
    I've noticed that my SuperDrive is loud and seems to vibrate quite a lot when spinning a disk esp. when first loading, so I would say that it's quite normal.
     
  4. macrumors 601

    cb911

    #4
    when i had my TiBook 667 it would sometimes make a really loud noise when reading some CDs, mostly the cheap type. also, when verifying those CDs in Toast, it was quite loud, but everything kept running fine... so if it aint' broke, dont' fix it. :p :)
     
  5. macrumors 6502

    dvdh

    #5
    About the stickers on CDs . . .

    There is a reason that the fine print on most CDR packing reads:

    "Do not put any stickers on the disk" (Sony in this case)

    It throws them way off balance, which is not a big problem in slower drives, but if it's the slightest bit off centre in a faster drive, you'll definitely notice.
     

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