HEIDENHAIN TNC 415 (259 9x0) Service Manual - Manual (Page 59)

SERVICE MANUAL TNC 415B/425
Page 56
Issue: 20.08.95
10.3.1 Test Points on the Power Supply Board
Voltage Table
Test point on
power supply
board Reference point
on power
supply board
Output U NOM [V] U MIN [V] U MAX [V] I NOM [A]
LH22
LH20
LH18
LH14
LH10
LH1
LH12 (reset)
2)
LH24 (0V)
LH24 (0V)
LH24 (0V)
LH24 (0V)
LH24 (0V)
LH3 (0V*1) + 5V (UP)
+ 12V
+ 15V
- 15V
+ U
BATT
+ 5V * 1 1)
+ 5.05
+ 12
+ 15.0
- 15.0
+ 4.5
+ 5 + 5.00
+ 11.4
+ 14.4
- 14.4
+ 3.9
+ 4.75 + 5.10
+ 12.6
+ 15.6
- 15.6
-
+ 5.25 2.5
0.1
0.15
0.08
approx. 20 µA
0.3
1) potential-free voltage
2) reset U
Lmax
= 0.4 V, U
Hmin
= 3.9 V