24 Agilent 7890 Series Troubleshooting
2 ALS and Detector Symptoms
Alignment Light on 7683B Injector Tower is On
Refer to the 7683B Automatic Liquid Sampler Installation,
Operation and Maintenance manual for additional information.
When the Align Mode light is on, the injector will not operate
until the following procedure is performed:
1 When the injector is not operating, open the injector tower
door.
2 Slide the syringe carriage up until it stops.
3 Remove the syringe.
4 Carefully remove the needle support assembly from the
injector.
5 Use a pen to press the recessed alignment button located
above the indicator lights, then close the door.
6 The injector will then go through the following steps:
a The turret rotates to verify that the needle support
assembly was removed, then rotates to determine what
type of turret is installed.
b The syringe carriage moves all the way down, then moves
back up again and clears the turret.
c The syringe carriage steps down until it touches the
turret. This sets its position relative to the turret.
d The plunger moves to calibrate six stops. Observe each of
the six steps to verify the plunger loop is functioning
properly. If it is missing stops, send the injector to Agilent
for repair.
7 When the alignment is complete, the Ready light turns on
and the sampler returns to the ready state. Install the needle
support assembly and syringe.
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