15
Table 3.1 Expected Test Point Readings
Power Supply
Board
Normal Reading
Tolerance
Conditions/Comments
TP1
V
Common
+/-50 mV
Bulk Supply Common
TP2
+27 V
+/-2 V
Main
supply for entire system
CPU Board
Normal Reading
Tolerance
Conditions/Comments
TP1
+/-2 V
TP2
+26 V
+/-2 V
V_ON voltage. Energized when unit is ON.
TP3
+26 V
+/-2 V
24 V
nominal if ~ (AC) present.
TP4
0.0 V
+26 V
+/-50 mV
+/-2 V
0.0 V
when unit is ON. 26 V when unit
is OFF.
TP6
6 V
+/-2 V
~ (AC) signal if speaker is sounding.
TP8
5 V
+/-0.5 V
5 V
supply for battery charging logic.
TP9
V
Common
+/-50 mV
Bulk Supply Common.
TP10
5 V
26 V
+/-0.5 V
+/-2 V
5 V
when pneumatics are NOT enabled.
26 V
when pneumatics ARE enabled.
TP11
5 V
+/-0.5 V
5 V
Supply
TP12
5 V
0 V
+/-0.5 V
+/-50 mV
5 V
Nominal.
0 V
when depressing
ON/STANDBY switch on membrane panel.
TP13
V
Common
+/-50 mV
Bulk Supply Common.
TP14
4.5 V
0 V
+/-1 V
+/-50 mV
0 V
if Safety Circuit is enabled and alarm
condition exists.
TP15
4.5 V
+/-1 V
At power up, this TP will be held low until
approximately 0.2 seconds after TP11
reaches 5 V
Ensures microprocessor has
reset properly.
TP16
32.768 kHz
Square wave.
TP17
4.5 V
+/-1 V
0 V
indicates problem with valve(s) or
valve driver circuit.
TP20
V
Common
+/-50 mV
Bulk Supply Common.
TP22
12 V
+/-1 V
12 V
for audio amplifier.
TP23
4.1 V
+/-0.1 V
4.1 V
Transducer reference voltage.
TP24
5 V
+/-0.5 V
5 V
A to D supply voltage
TP27
V
Common
+/-50 mV
Bulk Supply Common.
TP30
V
Common
+/-50 mV
TP31
5 V
+/-0.5 V
5 V
for ON/STANDBY switch logic.
Bulk Supply Common.
+27 V
Main
supply for entire system
Summary of Contents for A.T.S. 2000
Page 1: ...Operator Service Manual A T S 2000 TOURNIQUET SYSTEM REF 60 2000 101 00...
Page 25: ...23 3 Block Diagram...
Page 28: ...26 11 CPU Board...
Page 29: ...27 12 Power Supply Board...
