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DISASSEMBLY AND ASSEMBLY OF MECHANISM
Repair for Optical Laser pickup (VPU1)
When you change the Optical Laser pickup (VPU1) you must
be used adjustment jig and cam change jig are required. And
please change the cam (29: 2 pcs) and the shaft (44) simulta-
neously.
• Disassembly
1) The lands for LD protection of the Optical Laser Pickup is
short-circuited with solder (2 points) and the flexible code
is removed from the connector.
2) The screw for adjustment (A) is removed (1 screw). Is care-
ful not to lose the floating spring (56: 3 pcs).
3) Removing the chassis (3) (5 scews: B) and the traverse
chassis ASSY
4) Removing the pickup arm (22) (1 screw: E).
Note: The screw for pickup arms (E) is not reusable. Please
be sure to exchange.
B
3
B
B
LD SHORT LAND
TRAVERSE
56
CHASSIS
ASSY
56
A
56
B
B
E
PICKUP ARM
X92-4400-0x/4730-0x
X92-4740-0x/4750-0x
• Assembly
Preparation: The Optical Laser pickup (VPU1), cam (29: 2 pcs)
and the shaft (44) are assembled with cam press fit jig.
Grease (HF-30) is applied to the shaft.
1) The pickup arm (22) is fixed in the Laser pickup. The screw
(E) carries out screw lock.
2) It assembles in a procedure contrary to disassembly. The
adjustment screw is rough-adjust so that the upper surface
of the traverse chassis (2) and the upper surface of chassis
(3) may turn into the same position.
Note: Please read to mechanical adjustment along with the
manual of adjustments jig.
Removing the roller lever assy (20)
When removing the roller lever assy that it is removed before-
hand for the rod (77) and screw (H) of disc protection mecha-
nism.
1) Removing to the spring (59 and 63).
2) The roller lever ASSY (20) is stood and it removes upward.
Note: The rod (77) and the screw (H) are not reusable. Please
be sure to exchange.
63
ROLLER LEVER ASSY (20)
2
3
59
15
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