MD-MS722/C/W/MS721W
– 12 –
REMOVING AND REINSTALLING THE MAIN PARTS
Remove the mechanism according to the disassembling meth-
ods 1 to 3. (See Page 11.)
How to remove the spindle motor (See Fig. 12-1.)
1. Remove the solder joint (A1) x 1 of flexible PWB.
2. Remove the screws (A2) x 3 pcs., and remove the spindle
motor.
Figure 12-5
Figure 12-1
Figure 12-2
Figure 12-3
How to reinstall the optical pickup unit
(See Fig. 12-5.)
1. Remove the screw (E1) x 1 pc.
2. Slowly raise the optical pickup.
How to remove the magnetic head (See Fig. 12-4.)
1. Remove the screw (D1) x1 which connects the magnetic
head to the head relay flexible PWB, and remove the
soldering joint (D2) x2.
Note:
Mount carefully so as not to damage the magnetic head.
(If the gear is damaged, noise is caused.)
Figure 12-4
How to remove the lift motor (See Fig. 12-2.)
1. Remove the solder joint (B1) x 2 of slide motor lead wire.
2. Remove the screw (B2) x 1 pc., and remove the flexible
PWB.
3. Remove the screw (B3) 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. 12-3.)
1. Remove the stop washer (C1) x 1 pc., and remove the drive
gear (C2) x 1 pc.
2. Remove the solder joint (C3) x 1 of flexible PWB.
3. Remove the screws (C4) x 2 pc., and remove the sled
motor.
Note:
Take care so that the motor gear is not damaged.
Mechanism Flexible PWB
Solder joint
(A1)x1
Spindle Motor
(A2)x3
ø1.4x2.8mm
MD Mechanism
(B3)x1
ø1.4x5.5mm
MD Mechanism
(B1)x2
Remove the
solder joint
Lift Motor
(B2)x1
ø1.4x1.5mm
(C4)x2
ø1.4x1.2mm
(C3)x1
Mechanism Flexible PWB
Solder joint
Stop Washer
(C1)x1
Drive Gear
(C2)x1
Sled Motor
Shaft
Pickup Unit
(D1)x1
Ø1.4x1.5mm
Solder
joint
(D2)x2
Pickup Unit
Shaft
Magnetic Head
Pickup Unit
Shaft
(E1)x1
ø1.7x2.5mm
Summary of Contents for MD-MS721BL
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