Velleman projects K7000 Assembly instructions - Manual (Page 9)

9
Testing
Fig. 1.0
Usage :
 Connect the earth of the signal generator/tracer to the earth of the circuit to be tested (to do so you may
use one of the screens of the test flexes).
 Now you can "detect" or "inject" a signal at certain points of the circuit (e.g. the base of a transistor) so as
to locate the defective component.
Fig. 2.0