Numark Industries TTUSB - Manual (Page 4)

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11. Counter Weight and Scale Ring: The Counterweight is used to
balance the head shell and cartridge assembly so that the proper
amount of stylus pressure is applied to the record.
12. Anti-Skate Adjustment: This knob is used to compensate for
inward tracking forces. See TONEARM SETUP for more details.
13. Arm Clip: This specially designed arm clip secures the tone arm
while at rest or when not in use. The arm clip has been designed
to remain in the up position while unlocked.
NOTE: When transporting the turntable, it is always
recommended that the headshell be removed and the arm clip
secured to prevent tonearm or turntable damage.
14. Tone Arm Lock Nut: This Aluminum nut is used to secure the
head shell and cartridge assembly to the tone arm tube. See
Cartridge Setup for more details.
15. Cartridge and Headshell: The cartridge is pre-mounted on a
standard headshell. The cartridge is user replaceable and
compatible with a variety of standard cartridges. Be sure to
remove the clear plastic cover before operating the turntable from
the cartridge.
PLATTER SETUP
WARNING: Incorrect Platter setup can lead to poor turntable
performance, platter instability or permanent motor damage.
1. Start by placing the rubber drive belt around the inner bottom
ring of the turntable platter. This should come preinstalled, but
check to make sure that it is not twisted or damaged.
2. Install the Platter on the center spindle and press it down firmly.
Check to make sure that it rotates uniformly and does not wobble
excessively.
3. Rotate the platter so that the one of the holes is aligned with the
Start Stop button on the front corner of the turntable. The brass
motor spindle should be visible through this hole.
4. Reach into the hole and pull the rubber drive belt off of the inner
ring, and install it over the motor spindle. Be careful not to twist
the rubber drive belt during this step. Check to make sure the
platter rotates uniformly. If the drive belt is properly installed,
there should be a slight amount of tension that brings the platter
to a stop after spinning it freely.