TO RECALIBRATE MICRO-100 TURNTABLE FROM 50 TO 60HZ

To remove the chassis from the case: Stick a screwdriver under the chrome handle cover and snap it off. Remove the 2 screws holding the handle, and the 2 rubber feet on the opposite side. The chassis will now slide out of the case.

Lift out the platter, and place the chassis upside down, control panel away from you, on a pillow or soft foam to protect the tone arm. Locate the speed control transport, the throwout which disengages the drive wheel, and the microswitch that turns off the motor when the speed control is in the OFF position (see drawing below.) Loosen the 2 nuts holding the throwout and slide it all the way to the right, out of the way. Loosen the nut holding the microswitch and rotate it so that it is out of the way.

Remove the pillow, turn the unit right side up and install the new platter. Plug the unit in, turn it on, and set the speed control knob at 45 RPM. Hold the knob in place with your left hand and tilt the unit up and away from you so that you can get at the underside. Without allowing the knob to move, loosen the 2 screws holding the speed control transport and rotate it until the strobe indicates 45 RPM. Tighten the screws & recheck to be sure the speed is correct.

Unplug the unit and turn it back upside down on the pillow. Put the speed control knob in the OFF position and rotate the microswitch until there is about 1/16" of clearance between the leaf and the body of the switch, so that the switch is now turned off. Retighten the nut.

Keep the speed control in the OFF position, and lift the motor so that you can slide the throwout back to the left until it holds the drive wheel away from the platter (see drawing). Retighten the nuts so that they are firm but not extremely tight. If you overtighten them the speed control will bind and not move freely.

Turn the unit right side up and turn it on. Check to be sure that the turntable strobes correctly; that the motor turns off when the speed control knob is in the OFF position, that the speed control moves freely, and that the drive wheel disengages from the platter when the speed control knob is in the OFF position.

Reinstall the chassis in the case and the job is finished.