Agilent Technologies 6890 Series Service Manual page 715

1225 Main Board, 6890N
Connectors
Table 1225-3
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 ALS power 24 VAC (RED)
8 Heater Center Tap (WHITE)
9 ALS power 24 VAC (RED)
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
4 of 6
Main Circuit Board Pinouts
P21–Inl/Det Htd Zones, man split valves
1
2
3
3 2 1 4
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
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
1 10
11 20
Connects to:
G1530-60640
(Inlet/Detector harness)
1 8
9 16
Connects to:
G1530-60660
(Auxiliary Zone/Valve
Box harness)
Jun 2001