Sony PDW-1500 Playback condition displays

Preparations 3 Chapter

Display		Operation mode
Block A	Block B
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

fPlayback 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.

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	Name	Description
	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.

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.

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