HEIDENHAIN TNC 306 Service Manual - Manual (Page 39)

SERVICE MANUAL TNC 306/360
Page 35
HEIDENHAIN Service
8.4.3 Measuring Points on the Processor Board
LED blinking: control is working
correctly
Designation Voltage Values
+ 5 V (+5.05
±
0.05) V
+ 12 V (+ 12
±
0.6) V
+ 15 V (+ 15
±
0.6) V
- 15 V (- 15
±
0.6) V
UV 1) (+ 4.5
±
0.2) V
1) X13 disconnected on the pro-
cessor board: the voltage is equal to
the charging voltage of the capacitor