Jasmine JS-TA214J, User Manual

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the protractor surface, and the two sides are parallel to the
vertical line of the null point matrix.
Step 5: VTA adjustment. Upper or lower the height of the tonearm pillar
to make the tonearm tube parallel to the protractor surface.
Step 6: Calibrate the stylus tracking force again according to the
specification of the cartridge！
Side bias adjusting
Friction between the stylus and disc produces a force which tries
to pull the arm forward. It varies with tracking force, but not
significantly with disc speed. Because the arm is offset, a turning
moment is produced about the vertical pivot. The arm tries to swing to
the turntable centre. The resulting side pressure is particularly
undesirable for stereo, causing the stylus to favour one channel and
assume a non-central position. The bias adjuster restores balance by an
opposing force proportional to the tracking force.
It is fitted as follows: