Removing And Reinstalling The Main Parts - Sharp MD-M3 Service Manual

REMOVING AND REINSTALLING THE MAIN PARTS

MD MECHANISM SECTION
For details about the procedure to remove the MD mechanism
from the main unit, refer to the Disassembly Procedure, Steps
1-6 in the main unit and also the MD section.
(Referring to p.11,12)
Caution:
After pulling out the optical pickup connector, wrap the
end of the connector in conductive aluminium foil to
prevent the optical pickup from being destroyed by
static electricity.
How to remove the magnetic head
(See Fig. 13-1)
1. Remove the screws (A1) x 1 pc.
Caution:
Take utmost care so that the magnetic head is not
damaged when it is mounted.
How to remove the cartridge holder
(See Fig. 13-2)
1. Open the roller arm lever in the arrow direction, and lower
the clamp lever to the rear side.
2. Apply +5V to the red line side of blue connector of loading
motor, push the rack gear in the arrow direction to move the
cam plate lever unit tick is heard.
3. Remove the screw (B1) x 1 pc., and the spring (B2) x 1
pc.,fitted to the holder arm, and shift the cartridge holder to
the left side to remove it.
How to remove the mechanism switch PWB
(See Fig. 13-3)
1. Remove the screws (C1) x 2 pcs., and remove the mechanism
switch PWB.
MD Mechanism
Roller Arm Lever
Clamp Lever
Loading
Motor
Rack Gear
Cam Plate Lever
– 13 –
MD-M3/M1
(A1)x1
ø1.7x5mm
Magnetic Head
Figure 13-1
Slider Lever
Cartrdge Holder
(B1) x1
ø1.7x5mm
(B2) x1
Figure 13-2
(C1)x1
ø1.7x3mm
(C1)x1
ø1.7x9.5mm
Mechanism Switch PWB
Figure 13-3