MD-MS722H/MS721H
– 10 –
REMOVING AND REINSTALLING THE MAIN PARTS
Remove the mechanism according to the disassembling meth-
ods 1 to 3. (See Page 9.)
How to remove the spindle motor (See Fig. 10-1.)
1. Remove the solder joint (A1) x 1 of flex PWB.
2. Remove the stop (A2) x 3 pcs. and remove the spindle
motor.
Figure 10-5
Figure 10-1
Figure 10-2
Figure 10-3
How to reinstall the optical pickup unit
(See Fig. 10-5.)
1. Remove the screws (E1) x 1 pcs.
2. Slowly raise the optical pickup.
How to remove the magnetic head (See Fig. 10-4.)
1. Remove the screw (D1) x1 which connects the magnetic
head to the head relay flex PWB, and remove the soldering
joint (D2) x2 pcs.
Note:
Mount carefully so as not to damage the magnetic head.
Figure 10-4
How to remove the lift motor (See Fig. 10-2.)
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, 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. 10-3.)
1. Remove the stop washer (C1) x 1 pc., and remove the drive
gear (C2) x 1 pc.
2. Remove the screw (C3) x 2 pc.
3. Remove the screw (C4) x 2, and remove the sled motor.
Note:
Take care so that the motor gear is not damaged.
(If the gear is damaged, noise is caused.)
Mecha Flexble 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
(C3)x2
ø1.4x1.2mm
(C4)x2
Mecha Flexble 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
