Sony PDW-1500 사용자 설명서

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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.”

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

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.

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.