Dvd Jitter Adjustment - Pioneer DV-454-K Service Manual

5

DVD Jitter Adjustment

2
• Playback method of inner and outer address for the purpose is refererd to "6.4 TEST MODE".
• Jitter indication of the monitor is refererd to "7.1.1 TEST MODE (Display Specification of the Test Mode)".
START
• Test mode
• Play the DVD test disc
at outer track
(around #200000)
Turn the POWER OFF in
case of NG once, and
perform the adjustment
once again.
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
5
6
Mechanism Assy
Adjust the Tangential
Adjustment Screw so that
jitter becomes minimum.
Player
CHECK
Confirm the error rate that is
displayed "OK"
NG
(Example ERROR RATE: 6.6oe - 6 OK )
Disc playback normally.
• The measurement of block error rate
ESC
DV-454-K
6
7
• Play the DVD test disc
J : Min
J : Min
J : - - - -
• Play the DVD test disc
Monitor
J : Min
5
7
8
Use disc: GGV1025
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
55
8
A
B
C
D
E
F