Star Tech Journal

0
October 1997
HITS. (For detailed instructions,
see Running Tests in Section H
of the SyberSonic Service
Manual.) Press the Scan/Cancel
button on the mech. The grip-
per motor should now move. If
it does not, go to the next step in
the error code chart. Continue
until the problem is found. That's
it! It's that easy.
Disc
missing disc is attempted the dis-
play will show "XX Is Not Avail-
able." Missing Disc errors are
found in Quick Find 114. To view
additional missing discs, use the
Right Pages button. Following is
an example of a missing disc dis-
play.
DISC ERRORS
114
Mis sing Disc 04
ERRORS
Another diagnostic feature built
into the SyberSonic system is the
automatic logging of CD playing
errors, missing discs and locked
tracks. This information can be
used to determine if an individual
CD or the CD M-12 is causing
playing errors. In order to be
able to determine what is caus-
ing a playing problem, it is first
necessary to define terms.
A PLAYING ERROR occurs when
the computer receives data from
the CD player that is not sequen-
tial. In other words, the laser
"skipped" ahead or behind of
where it was reading . Playing
errors are found in Quick Find
112. To view additional playing
errors, (if they exist) use the Right
Pages button. Following is an
example of a playing error dis-
play.
~
STAR*TECH JOURNAL
~
DISC ERRORS
112
Sel 3602
Errs 02
.
A MissING Disc is logged when
the CD player cannot read the
table of contents of that indi-
vidual disc. If a selection on a
.
A LOCKED TRACK is an indi-
vidual song that has had playing
errors which exceeded the pre-
determined number of "skips"
more than two times. Once
locked, this song cannot be se-
lected again. If selection of a
locked track is attempted the dis-
play will show "Selection XX.XX
Is Not Available." Locked Tracks
are found in Quick Find 113. To
view additional locked discs, (if
they exist) use the Right Pages
button. Following is an example
of a locked disc display.
~
'
DISC ERRORS
113
. Disc 36 Track 02
WHAT CAN CAUSE Disc ERR.oRS?
Now that we know what each
item means, lets look at the pos-
sible causes of each.
A Playing Error can be caused
by a dirty disc, a scratched disc
or a dirty CD player lens. This
error can also be caused by the
CD not being properly clamped
to the player spindle thus not al-
lowing it to spin properly.
A Missing Disc error is caused by
the laser not being able to read
the table of contents of a disc ei-
ther when the CD was mapped
or when a song was selected from
that disc. This error can be
caused by an empty slot, a dirty
disc, a scratched disc or a dirty
CD player lens. This error can
also be caused by the CD not
being properly clamped to the
player spindle thus not allowing
it to spin properly.
A Locked Track can be caused
by a dirty disc, a scratched disc
or a dirty CD player lens. This
error can also be caused by the
CD not being properly clamped
to the player spindle thus not al-
lowing it to spin properly.
TROUBLESHOOTING Disc PROB-
LEMS
Now I hear you saying, "Wait a
minute! All three problems can
be caused by the same thing!
How can I tell what's wrong?"
It's easy. Look at the disc errors;
track lockouts and missing discs
then note how many there are .
A FEw CD's SKIP
If all you find are a few playing
errors, chances are the only prob-
lem is a dirty disc or possibly a
few dirty discs. Try cleaning
them and then play the tracks
that were indicated in the play-
ing errors. (Since you're there,
you might as well clean the lens
... continued on page 70