12-22-2013, 02:25 PM
CONTROL ADDITION
Since the 1571 disk drive does not have a speed adjustment control, it is
necessary to add one.
Dis-assemble the drive and remove the mechanical section of the drive. The
mechanical section consists of the drive motor, stepper motor, and
photo-optic sensors.
Remove the four screws on the bottom side and set them aside. Using the
diagram in Figure 5 as a guide, solder a 12" wire at locations A & B.
Re-assemble the bottom of the mechanical section making sure that the wires
just soldered are not being pinched.
Solder one wire to the MIDDLE post of the speed controller, and the other
wire to either of the two outside posts.
See these pictures:
![[Image: speed1.jpg]](https://www.cbmstuff.com/images/speed1.jpg)
![[Image: speed2.jpg]](https://www.cbmstuff.com/images/speed2.jpg)
![[Image: speed3.jpg]](https://www.cbmstuff.com/images/speed3.jpg)
![[Image: speed4.jpg]](https://www.cbmstuff.com/images/speed4.jpg)
Since the 1571 disk drive does not have a speed adjustment control, it is
necessary to add one.
Dis-assemble the drive and remove the mechanical section of the drive. The
mechanical section consists of the drive motor, stepper motor, and
photo-optic sensors.
Remove the four screws on the bottom side and set them aside. Using the
diagram in Figure 5 as a guide, solder a 12" wire at locations A & B.
Re-assemble the bottom of the mechanical section making sure that the wires
just soldered are not being pinched.
Solder one wire to the MIDDLE post of the speed controller, and the other
wire to either of the two outside posts.
See these pictures: