13
0V 250 mV p-p
Focus Servo Gain Adjustment (Figures 9 and 11)
Step Connect Setting Adjust Result
VR704Play the regular disc.
See
Figure 9
1
Oscilloscope CD PCB
TP750
GND
TP710
Figure 9
GND
TP751
TP710
0V 100 mV p-p
Tracking Servo Adjustment (Figures 10 and 11)
Step Connect Setting Adjust Result
Oscilloscope
CD PCB
VR703Play the regular disc.See
Figure 10
1
Figure 10
3
2 Swap the regular disc for the test disc A*BEX TCD-726 and play it at the black dod of 600 µm.
Confirm that there is no skipping.
If there is any skipping, adjust VR 703 to reduce the tracking servo gain until no skipping occurs.
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