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Old 25th December 2012, 12:57 AM   #11
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Excellent video! That point of view is not usually possible. I've been wondering why Sony mechs can have fits of noisiness and periods of calm.

At 3:10 on the video, the focus motor is very busy bobbing the head up and down, but later on without the disk being touched, it is motionless whilst reading the same part of the disc. It looks like the CD can be tilted by the jogging of the sled.

The relationship between the two radial drives, sled and head, is quite entertaining. A similar view of a sled with a linear motor would be good. Viewed from underneath, they go through episodes of wobbling for no apparent reason, but I can't see the disk or the laser head at the same time...infuriating. An endoscope would be useful...
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Last edited by PlasticIsGood; 25th December 2012 at 01:01 AM.
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