Removing And Reinstalling The Main Parts - Sharp MD-MT821(GL) Service Manual

REMOVING AND REINSTALLING THE MAIN PARTS

Remove the mechanism according to the disassembling meth-
ods 1 to 6. (See Page 10.)
How to remove the spindle motor (See Fig. 11-1.)
1. Remove the solder joint (A1) x 1 of flexible PWB.
2. Remove the screws (A2) x 3 pcs., and remove the spindle
motor.
How to remove the lift motor (See Fig. 11-2.)
1. Remove the solder joint (B1) x 2 of lift 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. 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., and remove the sled
motor.
3. Remove the solder joints (C4) x 2 of flexible PWB.
Note:
Take care so that the motor gear is not damaged.
(If the gear is damaged, noise is caused.)
How to remove the magnetic head (See Fig. 11-4.)
1. Remove the screws (D1) x4 which connects the magnetic
head to the head relay flexible PWB, remove the spring
washers (D2) x 2 and remove the soldering joints (D3) x 2.
Note:
Mount carefully so as not to damage the magnetic head.
(If the gear is damaged, noise is caused.)
How to reinstall the optical pickup unit
(See Fig. 11-5.)
1. Remove the screw (E1) x 1 pc.
2. Slowly raise the optical pickup.
Shft
Pickup Unit
Figure 11-5
(E1)x1
ø1.7x3mm
MD Mechanism
Spindle Motor
Remove the
solder joint
(B1)x2
Lift Motor
Stop Washer
(C1)x1
Drive Gear
(C2)x1
Magnetic Head
– 11 –
MD-MT821/W
(A2)x3
ø1.4x2.8mm
Mechanism Flexible
PWB Solder joint
(A1)x1
MD Mechanism
Figure 11-1
(B3)x1
ø1.4x5.5mm
(B2)x1
ø1.4x1.5mm
MD Mechanism
Figure 11-2
(C3)x2
ø1.4x1.2mm
Sled Motor
Mechanism Flexible PWB
Solder Joint (C4)x2
MD Mechanism
Figure 11-3
(D1)x2
ø1.4x2.2mm
Spring Washer
(D2)x2
(D1)x1
Solder joint
ø1.4x1.5mm
(D3)x2
(D1)x1
ø1.2x1.6mm
MD Mechanism
Figure 11-4