Chapter 3 Preparations
44
3-4 Superimposed Text Information
f Playback condition mark
One of three channel condition marks is displayed when
the ACCESS indicator is lit during any mode except
recording. The three channel condition marks indicate the
following three stages.
a) Read errors will occur if the playback condition continues to deteriorate.
If a read error occurs, a “Disc Error!” alarm appears in the time data
display, the picture freezes, and audio is muted.
To display playback condition marks, set basic menu item
012 “CONDITION DISPLAY ON VIDEO MONITOR”
to “ena,” and set basic menu item 005 “DISPLAY
INFORMATION SELECT” to “T&sta.”
For details about operation, see 8-2-2 “Basic Menu
Operations” (page 88).
Playback condition displays
You can be alerted in advance to deteriorating playback
conditions and to error correction rates which are
approaching their limits.
Deteriorating playback may be due to the following
causes.
• Scratches and dust on the disc surface
This includes fingerprints, dust from the air, tar from
cigarette smoke, and so on.
Scratches and soiling which occur before recording are
not a problem because they are registered in advance as
defects, and recording avoids them. However, scratches
and soiling which occur after recording can lead to
deteriorating playback conditions.
• Aging of disc recording layers
Over several decades, the recording layers of optical
discs can age and cause deteriorating playback
conditions.
You can use this function to check archival discs and
other discs which have been stored for extended periods,
so that you can take action before the deterioration
progresses further.
• Deteriorating laser diodes performance
The performance of the laser diodes used in optical
heads can worsen with age, leading to deteriorating
playback conditions.
You can use the digital clock to check the total optical
output time of optical heads.
For details, see 9-1-1 “Digital Hours Meter” (page 113)
about this setting.
Refer to the Maintenance Manual for an approximate
guide to when it is time to replace optical heads.
LOADING Disc is being loaded.
UNLOADING Disc is being unloaded.
STANDBY OFF Standby off mode
STOP Stop mode
NEXT Cuing up to the first frame of the
next clip.
PREV Cuing up to the first frame of the
current clip.
F.FWD Fast forward search
F.REV Fast reverse search
PLAY Playback mode (servo unlocked)
PLAY LOCK Playback mode (servo locked)
REC Record mode (servo unlocked)
REC LOCK Record mode (servo locked)
JOG STILL A still picture in jog mode
JOG FWD Jog mode in forward direction
JOG REV Jog mode in reverse direction
SHUTTLE STILL A still picture in shuttle mode
SHUTTLE (Speed) Shuttle mode
VAR (Speed) Variable speed mode
TOP 0001/xxxx Cuing up to the first frame of the
first clip.
END xxxx/xxxx Cuing up to the last frame of the
last clip.
PREROLL Cuing up during thumbnail search
Display Name Description
Green condition There is no problem with the
playback condition. This unit
and the disc can be used just
as they are. This
corresponds to the “green”
channel condition indicator of
a VTR.
Yellow condition The playback condition has
deteriorated to some degree.
There are no read errors, but
you should take the action
described in the next section.
This corresponds to the
“yellow” channel condition
indicator of a VTR.
Display Operation mode
Block A Block B
Red condition The playback condition has
deteriorated. There are no
read errors,
a)
but you should
take the action described in
the next section. This
corresponds to the “red”
channel condition indicator of
a VTR.
Display Name Description
