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Troubleshooting
Connector Pin Descriptions
6-18
Model 43i Trace Level-Enhanced Instruction Manual
Thermo Fisher Scientific
Connector Label
Reference Designator Pin Signal Description
2
Ground
3
AC-HOT
4
Bench Heater AC
CONVERTER
MJ17
1
Converter Temperature Input
2
Ground
3
Converter Heater On/Off
4
Ground
5
+15V
6
-15V
24V IN
P1
1
+24V
2
Ground
AC PUMP
PJ5
1
AC-HOT
2
AC-NEUT
3
AC-Ground
FAN PJ4
1
+24V
2
Ground
AC IN
PJ3
1
AC-HOT
2
AC-NEUT
3
AC-Ground
AC CONVERTER
PJ12
1
AC-HOT
2
AC-NEUT
3
AC-Ground
Z/S SOL.
PJ7
1
+24V
2
Zero/Span
Solenoid
Control
SAMPLE SOL.
PJ8
1
+24V
2
Sample Solenoid Control
CONV SOL.
PJ9
1
+24V
2
Spare 1 Solenoid Control
SPAN2 SOL.
PJ10
1
+24V
2
Spare 2 Solenoid Control
PERM OVEN THERM POJ1
1
Perm Oven Gas Thermistor
2
Ground
PERM OVEN
POJ3
1
Perm Oven Heater On/Off
2
+15V
Power