DIAGNOSTICS
Test Points and LEDs
10DEC05
DG4825-1
Page
164 of 180
Table 12
Test Points on the MOTION SYSTEM CONTROL BOARD A1
TP
Description
Expected Signal
1
Ground
0 V DC
2
Output of the + 5 V DC REGULATOR
4.9 - 5.1 V DC
3
+24 V DC after the FILTER for the
acc 5 V DC REGULATOR
22.5 - 25.5 V DC
4
Output of acc 5 V DC
REGULATOR
4.8 - 5.1 V DC
5
Acc 5 V DC after the FILTER
4.8 - 5.1 V DC
6
A/D CONVERTER CHANNEL 7
A/D CONVERTER CHANNEL 7
7
+24 V DC power
22.5 - 25.5 V DC
8
+12 V DC supply for DAC and Vref
11.5 - 12.5 V DC
9
+24 V DC after FERRITE FILTER, but
before FILTER P1 for + 5 V DC
REGULATOR
22.5 - 25.5 V DC
10
+24 V DC after FILTER for + 5 V DC
REGULATOR
22.5 - 25.5 V DC
12
Ground
Ground
13
+24 V DC power input voltage
•
1.43 V DC when the input power is
+24 V DC.
•
1.25 V DC if the input power
decreases to +21 V DC. A “Power
Interrupt” signal is sent to the CPU.