The processor board (see sec. 8.4.3) – HEIDENHAIN TNC 306 Service Manual User 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
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