HEIDENHAIN iTNC 530 Service Manual page 369

Procedure:
Measuring setup
with test adapter
Figure: Potentiometer test with test adapter and multimeter
July 2010
Shut down the control and switch off the machine.
Insert the measuring adapter on the MC connector X45 between MC and TE cable.
Switch the machine back on again.
Using a multimeter, check the collector voltages of the potentiometers.
Potentiometers
Feedrate override F%
Spindle override S%
Pins
37 = 0V 35 = wiper potentiometer
37 = 0V 34 = wiper potentiometer
Voltage range
0 ... approx. + 5V
0 ... approx. + 5V
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