9
Note 3: In the event that the drive belt becomes contaminated, clean it with
denatured alcohol. Clean the motor pulley and the drive hub at the same
time.
... remove the platter with the drive belt installed
Note: The following is not an operation related to the assembly of your Delphi but
a procedure to prevent overstretching the drive belt.
- Place one hand at the rear of the platter, over the motor, one hand at the front, lift
the platter about 2.5 cm (one inch) and with one finger pull the belt off the motor
pulley, then lift the platter straight up. Lifting the platter without looking after the
drive belt could possibly damage it.
... connect the power supply
- Plug the power supply output to the turntable input receptacle located to the rear of
the turntable.
- Plug the input cord to an AC outlet.
Note: Keep the power supply away from signal carrying leads.
... adjust the 33 and 45 speed
Note 1: The 33 speed must always be calibrated first.
Note 2: The individual speed potentiometers are accessible from the rear of the drive
module. When viewing the module from the rear, a clockwise rotation of the
potentiometer will result in an increase of the selected speed.
Note 3: The inner circles of strobe marks on the calibrator disc are to be used with a
supply of 50 Hz. The circle near the center is for 33 RPM, the other one is for
45 RPM. The outer circles are to be used with a supply of 60 Hz. The
outermost circle is for 45 RPM, the one next to it is for 33 RPM.
Note 4: The use of incandescent or preferably, fluorescent lighting is required to
accuratly read the calibrator disc.
Note 5: When the right speed is reached the appropriate set of strobe marks will be
standing still ( with no movement forewards or backwards )
- Place the calibrator disc over the spindle, on the platter.
- Select the 33 speed and check for accuracy.
- Select the 45 speed and check for accuracy.
- If both speeds need to be corrected, select the 33 speed again and, using the small
screw driver supplied with the tool kit, rotate the 33 speed potentiometer ( to the left,
when viewing the module from the rear ) until the strobe marks on the calibrator disc
come to a standstill position.
- Check the 45 speed again, if a small correction is still required, rotate the 45 speed
potentiometer.
(21 pages)
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