You can use Diagnostics to check that the machine works as it should.

You have a number of options:

LIGHT
The light bulb lits the light in the hopper.

THE CARD INDEX
A click on the bottom card in the hopper enables the card recognition, which is explained in a separate section.

GATES
The arrows lift one of the gates (the gate at the arrow). A second click releases the gate.

Gate stress test
The stress test can be useful if the decks are not sorted correctly. A click on the Gate stress test when a gate is activated (that arrow clicked) starts a stress test. A second click stops the test.

THE FEED ROLLER
A click on the right hand side cog wheel starts the feed roller at the bottom of the hopper (if there is no cards there). A second click stops it.

TRANSPORT BANDS
The bands are started by a click on the left hand side cog wheel. A second click stops the bands.