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ADJUSTMENT PROCEDURES-4
ADJUSTMENT OF DVD MECHANISM-4
2
DVD Jitter Adjustment
Playback method of inner and outer address for the purpose is refer to "5. TEST MODE".
Use disc: GGV1025
Test mode
Play the DVD test disc at outer track
(around #200000)
Mechanism Assy
Adjust the Tangential Adjustment Screw
so that jitter becomes minimum.
Test mode
Play the DVD test disc at inner outer track
(around #30000)
TE
L 13942296513
Mechanism Assy
Adjust the Radial Adjustment Screw so that
jitter becomes minimum.
Test mode
Play the DVD test disc at outer track
(around #200000)
Mechanism Assy.
Adjust the Tangential Adjustment Screw
so that jitter becomes minimum.
www
.
http://www.xiaoyu163.com
J4 : Min
J4 : Min
J4 : Min.
x
ao
u163
y
Test mode end
i
http://www.xiaoyu163.com
2 9
8
J4 :
J4 : - - - -
Tangential
adjustment
screw
Q Q
3
6 7
1 3
1 5
Front side
If error rate is OK,
locks a root of
tangential and radial
adjustment screws with
the Screw tight, and
Screw
go to step
3
tight
Screw tight : GYL1001
OK
Check
Confirm the error rate that is
displayed "OK"
(Example ER (av): 2.5e - 5-*OK )
Disc playback normally.
• The measurement of block error rate
co
.
9 4
2 8
Monitor
Radial
adjustment
screw
0 5
8
2 9
9 4
2 8
Turn the POWER OFF in
case of NG once, and
perform the adjustment
once again.
NG
m
5
PDR-155
9 9
9 9
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