1 Checking non-numbered parts...
3 Checking duplicated references...
5 Checking NoConnection nets for connections...
7 Checking nets with only one connection...
9 Checking pins without the 'pintype' attribute...
11 Checking type of pins connected to a net...
13 Checking unconnected pins...
16 ERROR: Reference U1: Slot out of range (5).
18 Checking duplicated slots...
20 Checking unused slots...