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Path: utzoo!utcs!lsuc!pesnta!hplabsc!labelle
From: labelle@hplabsc.UUCP (WB6YZZ La Belle)
Newsgroups: net.audio
Subject: CD Mistracking on damaged discs
Message-ID: <2403@hplabsc.UUCP>
Date: Thu, 14-Feb-85 11:44:03 EST
Article-I.D.: hplabsc.2403
Posted: Thu Feb 14 11:44:03 1985
Date-Received: Fri, 15-Feb-85 00:56:48 EST
Organization: Hewlett Packard Labs, Palo Alto CA
Lines: 23



        Has anyone had mis-tracking problems with their cd player?

 If so, what were the surrounding details? On my player, a TEAC PD-11,
 I've come across two discs which mistracked. The first had a 64th inch
 deep 32nd inch wide "gouge" which spiralled into the last "cut" on the
 disc. The player hangs up in the "groove" much like a record. The second
 disc could best be described as having a frosted splotch about 1/8 inch
 diameter. When mistracking first occurs, it plays each track two or three
 times before going on; finally hanging up indefinitely.

  An early SONY unit got hung up earlier from smaller scratches on said
 second disc, but a later SONY model performed as the TEAC on the same disc.
 A MAGNAVOX apparently played right through the same blemish! Early theory
 is that the "faster" the servo-mechanism, the more likely the unit will
 mistrack. The MAGNAVOX was very slow in aligning to a given track.
 
  Anyone else had any similar experiences, and or solutions? Polishing out
 the defects has not been tried yet, nor has anyone attempted to slow down
 the response time of the faster players.

                    GEORGE