Agilent Technologies 6890 Series Service Manual page 704

Table 1220-1
J7–AC Power
1 Heater 40 VAC (VIOLET)
2 unused
3 Heater 40 VAC (ORANGE)
4 unused
5 Heater Center Tap (GRAY)
6 unused
7 unused
8 Heater Center Tap (WHITE)
9 unused
10 20 VAC (YELLOW)
11 20 VAC Center Tap (BLUE)
12 20 VAC (YELLOW)
P16–Oven sensor
1 Oven sense
2 Ground
P17–Oven door switch
1 Oven door
2 Ground
P18–Inlet fan, oven flap, oven cryo
1 Oven Flap Drive (WHITE)
2 Oven Flap Drive (BLACK)
3 Oven FLAP +24 V (WHT/BLU)
4 Oven FLAP +24 V (WHT/BLK)
5 Oven Flap Drive (BLUE)
6 Oven Flap Drive (RED)
7 Inlet Fan +24 V (ORANGE)
8 Inlet Fan Drive (YELLOW)
9 Oven Cryo +24 V (GRAY)
10 CO2 Cryo Installed (VIOLET)
11 N2 Cryo Installed (GREEN)
12 GND
13 Oven Cryo Drive (WHT/RED)
P19–AC board control
1 Oven Relay Drive
2 Oven Triac Drive
3 +24 Volts
4 common w/ pin 2
5 common w/ pin 1
Jun 2001
Main Circuit Board Pinouts
P21–Inl/Det Htd Zones, man split valves
1
2
3
4
3 2 1
5
6 5 4
6
7
9 8 7
8
12 11 10
9
10
11
12
13
14
15
1 2
16
17
18
1 2
19
20
P22–Valve box, Aux heated zones
1
2
3
4
5
6
7
1 13
8
9
10
11
12
13
1
14
15
16
5
Electrical
Agilent 6890 Gas Chromatograph Service Manual
Main Board, 6890A and 6890 Plus
Connector electronics
Sensor GND
Sensor GND
Sensor GND
Sensor GND
Heater GND
Heater GND
Heater GND
Heater GND
+24 Volts
+24 Volts
FRONT INJ SENSOR
BACK INJ SENSOR
FRONT DET SENSOR
BACK DET SENSOR
FRONT INJ HEATER
BACK INJ HEATER
FRONT DET HEATER
BACK DET HEATER
FRONT INJ +24V VALVE
BACK INJ +24V VALVE
AUX 1 SENSOR
AUX 2 SENSOR
HEATER GND
HEATER GND
+24 Volts
+24 Volts
+24 Volts
+24 Volts
SENSOR GND
SENSOR GND
AUX 1 HEATER
AUX 2 HEATER
VALVE #1
VALVE #2
VALVE #2
VALVE #4
1220
1 10
11 20
Connects to:
G1530-60640
(Inlet/Detector harness)
1 8
9 16
Connects to:
G1530-60660
(Auxiliary Zone/Valve
Box harness)
3 of 10