These tracks are for setting anti-skate. If the 300Hz test tone is heard distorting or buzzing on either channel then your 'anti-skate' or 'bias compensation' should be adjusted to compensate. Most cartridges seem to sail through the first track regardless, but fine tuning will be needed to successfully complete the 14db and 16dB tracks. Increasing VTF towards the top end of the cartridge manufacturers scale can improve tracking here.
It's interesting to note that advanced stylus profiles like the Gyger S on the Goldring 1042 have a smaller 'sweet spot' during bias adjustment . A Goldring 1006 and Audio Technica AT110E where equally indifferent to bias setting over a larger range of the scale and where unable to track the final band as well the 1042.