1240 Wiring Harnesses
Auxiliary Zone/Valve Box Harness (G1530-60660)
4 of 8
Jun 2001
Electrical
Agilent 6890 Gas Chromatograph Service Manual
Auxiliary Zone/Valve Box Harness (G1530-60660)
The Auxiliary Zone/Valve Box harness runs from connector P22 on the main
board to the valve driver bracket screwed on to the right side of the GC above
the main board. It powers the valve actuator drivers and two auxiliary heater/
sensors.
Wire
color
Pin #
on P21
Signal
name
Destination
(and Pin #)
Violet 1 Aux 1 Sense A1 (2)
2 Aux 2 Sense A2 (2)
Green 3 Heater GND A1 (4)
4 Heater GND A2 (4)
Yellow 5 +24 Volts V1 (1)
6 +24 Volts V2 (1)
7 +24 Volts V3 (1)
8 +24 Volts V4 (1)
Black 9 Sensor GND A1 (3)
10 Sensor GND A2 (3)
Red 11 Aux 1 Heater A1 (1)
Orange 12 Aux 2 Heater A2 (1)
Brown 13 Valve #1 V1 (2)
Blue 14 Valve #2 V2 (2)
Gray 15 Valve #3 V3 (2)
White 16 Valve #4 V4 (2)
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