HEIDENHAIN TNC 415 (259 9x0) Service Manual - Manual (Page 76)

SERVICE MANUAL TNC 415B/425
Page 71
Issue: 20.08.95
11.2.5 Checking the Potentiometers
Proceeding:
*
Observe the safety instructions!
Connect the measuring adapter to X45 of the logic unit. Now the wiper voltages of the potentiometers
can be measured with a multimeter.
Potentiometer PIN Voltage
override F% 37 = 0V / 35 = + pot. (0 to approx. 4.95)V
spindle S% 37 = 0V / 34 = + pot. (0 to approx. 4.95)V
11.2.6 Measuring Setup for Checking the Potentiometers
X45
0.15
multimeter
TE
logic unit
measuring
adapter
test
adapter