Agilent 1200 Series Autosampler Reference Manual 95
Troubleshooting and Test Functions 3
Troubleshooting
If the autosampler is unable to perform a specific step due to a hardware
failure, an error message is generated. You can use the injector steps to do the
injection sequence, while observing how the instrument responds. Table 12
summarizes the injector steps, and lists the associated error messages and
probable causes of step failures.
Table 12 Step Failures
Step Function Probable Failure Modes
Bypass Valve already in bypass.
Valve not connected.
Defective injection valve.
Plunger Home Defective or dirty sensor on the sampling-unit flex board.
Defective metering-drive motor.
Needle Up Needle already in the upper position.
Defective or dirty sensor on the sampling-unit flex board.
Sticking needle-arm assembly.
Defective needle-drive motor.
Vial to Seat No vial in selected position.
Vial already in seat position.
Defective transport assembly motors.
Sticking transport assembly.
Defective gripper assembly.
Gripper not aligned (see page91).
Draw Sum of all draw volumes exceeds 100µl.
Defective metering-drive motor.
Needle Up Needle already in the upper position.
Needle already in the upper position.
Defective or dirty sensor on the sampling-unit flex board.
Sticking needle-arm assembly.
Defective needle-drive motor.
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