System Limitations - Sony MZ-B100 Operating Instructions (primary manual) Operating Instructions Manual

System limitations

The recording system in your MiniDisc recorder is radically different from those used in
cassette and DAT decks and is characterized by the limitations described below. Note,
however, that these limitations are due to the inherent nature of the MD recording system
itself and not to mechanical causes.
Symptom
"TR FULL" appears
even before the disc
has reached the
maximum recording
time (60, 74, or 80
minutes).
"TR FULL" appears
even before the disc
has reached the
maximum track
number or recording
time.
Track marks cannot be
erased.
The remaining
recording time does
not increase even after
erasing numerous short
tracks.
The total recorded time
and the remaining time
on the disc may not
total the maximum
recording time (60, 74,
or 80 minutes).
The edited tracks may
exhibit sound dropout
during search
operations.
Cause
When 254 tracks have been recorded on the disc, "TR FULL"
appears regardless of the total recorded time. More than 254
tracks cannot be recorded on the disc. To continue recording,
erase unnecessary tracks.
Repeated recording and erasing may cause fragmentation and
scattering of data. Although those scattered data can be read,
each fragment is counted as a track. In this case, the number of
tracks may reach 254 and further recording is not possible. To
continue recording, erase unnecessary tracks.
When the data of a track is fragmented, the track mark of a
fragment under 12 seconds long (recorded in stereo), 24 seconds
long (recorded in LP2 stereo mode or monaural mode), or 48
seconds long (recorded in LP4 stereo mode) cannot be erased.
You cannot combine a track recorded in stereo and a track
recorded in monaural; nor can you combine a track recorded
with digital connection and a track recorded with analog
connection.
Tracks of under 12 seconds, 24 seconds, 48 seconds in length
are not counted and so erasing them may not lead to an increase
in the recording time.
Normally, recording is done in minimum units of approximately
2 seconds (in stereo), 4 seconds (in LP2 stereo mode or
monaural mode), or 8 seconds (in LP4 stereo mode). When
recording is stopped, the last unit of recording always uses this
unit of 2 seconds, 4 seconds, or 8 seconds even if the actual
recording is shorter. Likewise, when recording is restarted after
the stop, the recorder will automatically insert a blank space
amounting to 2 seconds, 4 seconds, or 8 seconds before the next
recording. (This is to prevent accidental erasing of a previous
track whenever a new recording is started). Therefore, the actual
recording time will decrease whenever a recording is stopped; a
maximum of 6 seconds, 12 seconds, or 24 seconds compared to
the potential recording time for each stop.
The fragmentation of data may cause sound dropout while
searching because the tracks are played in higher speed than
normal playback.
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