Pioneer XV-BD122B, Руководство по обслуживанию

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XV-BD422B
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4. [8] PDXY Check
[ Instructions ]
[Effective indications]
Defect related to playback. (block noise, sound jumping, image jumping, disc is paused, freeze of screen etc.)
If an NG is generated in a specific disc only, the defect is likely to be caused by the disc. If an NG is generated in
other discs too, the defect is likely to be caused by the pick-up part. If the measurement value is very close to 40% even if
an NG is not generated, the NG is likely to be caused by the disc.
For PDXY Check, the misalignment of pick-up optical axis can be checked.
The optical axis misalignments of X-axis and Y-axis are displayed [PDX] and [PDY] with %, respectively.All of CD, DVD,
and BD can be measured. The method for calculating PDX and PDY is shown below.
1
Insert a disc (BD, DVD, CD) in a nomal mode. If the playback starts, pause it.
Display the home menu and enter into the Service Mode.
In this mode, the measurement can be carried out at an arbitrary place. After a disc is inserted, play and stop the point
you want to measure, and then enter into the Service Mode.
(The pick-up position does not return even in this status. The measurement at the place is available.)
2
Select "[8] PDXY Check" with the
b
key from the Service Mode screen, and press the [ENTER] key.
3
After the measurement is started and completed, the measurement value is displayed.
If the value is within the reference value, "Pass" is displayed.
PDX = ((A+B)-(C+D)) / (A+B+C+D)
PDY = ((A+D)-(B+C)) / (A+B+C+D)