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1
6.3 SKEW ADJUSTMENT
A
- If skew adjustment is necessary:
1) Replace the pickup unit by a new one.
2) Replace the spindle motor by a new one.
3) Replace the CRG chassis by a new one.
4) Replace the main shaft of the pickup unit by a new one.
5) Replace the sub shaft of the pickup unit by a new one.
* No skew adjustment is necessary for replacement of the CRG motor and the like.
- Procedures (Fig.1)
B
1) Remove the adhesive of the pickup unit with a pair of tweezers (above 2) to 5) only).
* Take care at this time that no fragments of the adhesive will be scattered, and that no unnatural force will apply
to the actuator.
2) Monitor the test point of the TP210 (RF waveform monitor) on the basis of GND in the product state with an
oscilloscope.
3) Clamp adjusting disc (GGV1018).
C
D
E
Actuator
F
68
1
2
Skew adjusting screw B
XDV-M8357ZT/UC
2
3
Skew adjusting screw
Coat the shaded portion (two locations)
with (adhesives).
3
4
Adhesive
Adhesive
Fig.1
4
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