Speed and Start/Auto/Reject controls.
The first image shows the speed changer of a Collaro RC456 deck. Typically, but not exclusively to every model, Collaro and BSR decks will have the speed changer at the lefthand side of the deck. Others, such as Garrard, will have it in the righthand side combined with the Start controls - as seen in the fourth image below.
Note the fifth image which shows the dual-concentric type also found on some Collaro decks (See post #7 for more information on these).
The remaining images show three typical Start Control set-ups. Second image is the Collaro RC456, third the BSR UA15.
It will be seen that terminology differs between brands. 'Start' and 'Manual' do nothing but start the motor, meaning to play you need to manually place the tonearm on the record which will be already on the turntable and not on the stacker. The overarm can be placed over the spindle to allow auto shut off at the end of play, or left swung clear to permit auto-repeat (see later image).
The 'Auto' or 'Reject' positions start the autochanger cycle and, if selected during play, will either a) return the tonearm to its rest and shut down the deck if only one record is loaded or b) reject the record being played and load+play the next one when more than one record is loaded.
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