11
Please note that very occasionally the bearing house will not be truly vertical due to slight variations of the thread pickup
on the nuts. It is purely a matter of trial and error to get this right by rotating the nuts and bearing house slightly. Aim to
get the platter parrallel with the arm-board in at least the plane that affects cartridge “azimuth”. For definition of
“azimuth” see section on “hi-Fi Cartridges – setting up procedures”. You can always alter the height of the arm to get
the other plane true.
Be careful in moving or transporting the deck - it is possible to bend the spring supporting bolts if a severe side
movement occurs (bear in mind that the sub-chassis etc. is quite heavy). Ideally it is best to use the transit bolts to hold
the sub-chassis rigidly to the plinth topboard when transporting the deck. In the unlikely event of a sub-chassis foul on a
support rod, the answer is usually to bend the bolt to the correct position. Only resort to such measures after you have
checked all other possibilities such as springs not locating in their sub-chassis housings etc.
Connecting up the power supply.
Now that you have positioned the motor you need to plug in the control box and transformer.
Plug the smaller male dc connector from the motor into the left hand of the two holes at the back of the control box
(See Fig A below)
Plug the male dc connector from the transformer (low voltage input) into the right hand socket (when looking at the
back of the box) another way of describe it is the socket directly behind the LED.
You will know that the motor kit is connected up correctly when the LED comes on (This light will remain lit all the
time that the motor kit is plugged in at the mains supply).
The location of the control box should preferably be kept away from strong electromagnetic fields such as
those generated by transformers, amplifiers, power supplies etc.
Pow er LED
Rotary Speed
Control sw itch
view from front
view from rear
Motor Output
Mains Input
A
A
FIG A
Setting the motor speed
NOTE:
You will need to set the motor speed yourself. In the first 4 hours of use from starting up the motor, the speed tends to
drift but then settles down permanently. To burn in the regulator board components we recommend at least 4 hours of
running the motor before you accurately set the speed.
The thin output wires from the transformer only carry 8 volts and therefore safe to handle. Voltages inside the
transformer are dangerous so the transformer case should not be unscrewed or opened.
The switch box is designed such that when the rotary switch on the front of the control box is turned fully anti-clockwise
the motor is off. One click of the switch clockwise is 33.3 rpm and the second click clockwise is 45rpm.
NOTE: The speed can only be finally set or checked with the cartridge dragging on a centre track of a record as the drag
affects speed setting.
Instructions for reading the strobe
Place the strobe disc on the record to be played. Play the record and watch the relevant ring on the disc. Adjust the speed
