Pioneer DV-S755AI Service Manual page 72

1
DVD Jitter Adjustment
2
• Playback method of inner and outer address for the purpose is refererd to "6.4 TEST MODE".
A
• Jitter indication of the monitor is refererd to "7.1.3 TEST MODE SCREEN DISPLAY".
START
• Test mode
• Play the DVD test disc
at outer track
(around #200000)
B
C
D
Turn the POWER OFF in
case of NG once, and
perform the adjustment
once again.
E
If error rate is OK,
locks a root of
tangential and radial
adjustment screws with
the Screw tight, and
!
go to step .
Screw tight: GYL1001
F
72
1
2
Mechanism Assy
Adjust the Tangential
Adjustment Screw so that
jitter becomes minimum.
Player
CHECK
Confirm the error rate that is
displayed "OK"
NG
(Example ER (av): 2.5e - 5-*OK )
Disc playback normally.
• The measurement of block error rate
ESC
DV-757Ai
2
3
Use disc: GGV1025
• Play the DVD test disc
J4 : Min
J4 : Min
J4 : - - - -
• Play the DVD test disc
Monitor
J4 : Min
5
3
4
at inner track
(around #30000)
Mechanism Assy
Adjust the Radial
Adjustment Screw so that
jitter becomes minimum.
at outer track
(around #200000)
Mechanism Assy
Readjust the Tangential
Adjustment Screw so that
jitter becomes minimum.
ESC
Test mode end
4