Sharp MD-MT20 User Manual

MD-MT20/20C/20W
– 11 –
REMOVING AND REINSTALLING THE MAIN PARTS
Remove the mechanism according to the disassembling meth-
ods 1 to 4. (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.
Figure 11-5
Figure 11-1
Figure 11-2
Figure 11-3
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.
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.)
Figure 11-4
How to remove the head up/down motor
(See Fig. 11-2.)
1. Remove the solder joints (B1) x 2 of head up/down 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 head up/
down 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.)
(A2)x3
ø1.4x2.8mm
MD Mechanism
Spindle Motor
(A1)x1
Mechanism Flexible
PWB Solder joint
(C1)x1
Stop Washer
MD Mechanism
Sled Motor
(C3)x2
ø1.4x1.2mm
(C2)x1
Drive Gear
(C4)x2
Mechanism Flexible
PWB Solder Joint
(D3)x2
Solder joint
(D1)x1
ø1.4x1.5mm
(D1)x1
ø1.2x1.6mm
(D1)x2
ø1.4x2.2mm
Magnetic Head
MD Mechanism
(D2)x2
Spring Washer
(E1)x1
ø1.7x3mm
Guide Shaft
Optical
Pickup Unit
MD Mechanism
Thrust Plate Spring
(B2)x1
ø1.4x1.5mm
(B3)x1
ø1.4x5.5mm
MD Mechanism
Remove the
solder joint
(B1)x2
Head Up/Down
Motor

Sharp MD-MT20 Specifications

General

Brand	Sharp
Model	MD-MT20
Category	MiniDisc Player
Language	English