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FL8400
CIRCUIT ADJUSTMENT
Step |
Connect
Setting
Adjust
|
Remarks
Focus Gain Adjustment
1
See figure 13
In TEST
MODE 2
2
To increase the focus gain, turn VR102 clockwise.
Tracking Gain Adjustment
1
See figure 14
In TEST
MODE 2
2
Place PHILIPS test disc 5A in the tray and play section with the 800;.m black dot, Confirm
there is no skipping.
3
If there is any skipping, adjust VR103 to reduce the tracking servo gain untill no skipping occurs.
To reduce the gain, turn VR103 rclockwise.
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Obtain a =
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of about 200 O mV,
VOLT/DIV : 50 mV
TIME/DIV : 5 ms
Oscilloscope
Set
R193 (FE) ¢
Figure 13.
Focus Gain Adjustment
VOLT/DIV : 100 mV
TIME/DIV ; 1 ms
Oscilloscope
Set
J304 (G)O
Figure 14.
Tracking Gain Adjustment
22
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