Service Adjustments
The Garrard Model 301 Transcription Motor has
been designed to give reliable service with continuous use
and these instructions have been included to enable the
user to make the few minor adjustments which may become
necessary after long periods of use in order to maintain
the high standard of performance which this motor is
capable of producing.
Intermediate Wheel.
The accuracy of the rubber tyred intermediate
wheel is of supreme importance in maintaining the high
standard of performance of the unit and should any wow
or flutter be suspected check the intermediate wheel after
first making sure the record is not at fault. Flutter or
bump in the reproduction may be caused by flats on the
intermediate wheel. These may result from the turntable
being held stationary with the motor switched on, for this
reason the turntable must never be stopped with the hand,
but the unit switched off by means of the on-off switch on
the unit plate. Should the intermediate wheel become
damaged it should be replaced with a new one.
Flutter and wow can also be caused by the side
face of the rubber tyre on the intermediate wheel rubbing
on the side of one of the motor pulley steps, the position of
the pulley on the motor shaft should be such that there is
Jz"
clearance between the side faces of the intermediate
wheel and motor pulley steps. Wow can be caused by oil
or grease on the motor pulley, intermediate wheel tyre
or the driving surface of the turntable. In this case
thoroughly clean all driving surfaces with a clean rag.
Should hum, originating from the motor, be sus
pected, see that the motor is freely suspended on its
springs and that the motor transit fixing screwS Diagram
5 have been unscrewed. Also see that the power supply
and earth leads are slack and not straining the motor on
17
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