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MD-MT877/MD-MT877C
REMOVING AND REINSTALLING THE MAIN PARTS
Remove the mechanism according to the disassembling meth-
ods 1 to 4. (See Page 10.)
Figure 11-1
Figure 11-2
Figure 11-3
How to reinstall the optical pickup
(See Fig. 11-4.)
1. Remove the screw (E1) x 1 pc., and remove the grip spring.
2. Remove the screw (E2) x 1 pc. to remove the thrust
spring, and remove the drive screw and the optical
pickup from MD mechanism.
Then, remove the drive screw from the optical pickup.
How to remove the magnetic head (See Fig. 11-4.)
1. Remove the screws (D1) x 2 pcs. of the magnetic head and
the optical pickup, and remove the solder joints (D2) x 2 pcs.
of the head flexible plate.
Note:
Mount carefully so as not to damage the magnetic head.
Figure 11-4
How to remove the lift motor (See Fig. 11-2.)
1. Remove the solder joints (B1) x 2 of lift motor lead wire.
2. Remove the screw (B2) x 1 pc., and remove the lift motor.
Note:
Take care so that the motor gear is not damaged.
(If the gear is damaged, noise is caused.)
How to remove the sled motor (See Fig. 11-3.)
1. Remove the stop washer (C1) x 1 pc., and remove the drive
gear (C2) x 1 pc.
2. Remove the screws (C3) x 2 pcs.
3. Remove the solder joints (C4) x 3 of flexible PWB., and
remove the sled motor.
Note:
Take care so that the motor gear is not damaged.
(If the gear is damaged, noise is caused.)
How to remove the spindle motor (See Fig. 11-1.)
1. Remove the solder joints (A1) x 4 of flexible PWB.
2. Remove the screws (A2) x 3 pcs., and remove the spindle
motor.
(A2) x 3
ø 1.4 x 3 mm
MD Mechanism
Spindle Motor
Solder joints
(A1) x 4
MD Mechanism
(B2) x 1
ø 1.4 x 3.8 mm
Solder Joints
(B1) x 2
Lift Motor
(C1) x 1
(C2) x 1
(C3) x 2
ø 1.4 x 1.2 mm
Sled
Motor
(C4) x 3
Solder
Joints
MD Mechanism
(E1) x 1
ø 1.4 x 1.8 mm
(D2)x2
Solder Joints
MD Mechanism
(E2) x 1
ø 1.7 x 3.5 mm
Grip Spring
(D1) x 2
ø1.4 x 1.8 mm
Optical Pickup
Drive
Screw
Thrust
Spring
Magnetic
head