— 12 —
Focus/Tracking Gain Adjustment
This gain has a margin, so even if it is slightly off. There is no
problem.
Therefore, do not perform, RV102 and RV103 adjustment.
Please note that it should be fixed to mechanical center position
when you moved and do not know original position.
Adjustment Location:
[BD BOARD] — Component side —
A
B
0 V
specified value:
amplitude: 300
±
100 mVp-p
×
100 = less than
±
7%
A-B
2 (A+B)
•
•
A+B = 300
±
100 mVp-p
Traverse waveform
symmetry
(VC)
(RF)
(PCK)
IC102
IC104
(FOK)
(A.GND)
(D.GND)
(TEO)
(TEI)
RV101
RV102
RV103
(FEI)
(TAO)
(FEO)
