96 Agilent 1200 Series Autosampler Reference Manual
3 Troubleshooting and Test Functions
Vial to Tray Defective transport assembly motors.
Sticking transport assembly.
Defective gripper assembly.
Gripper not aligned (see page91).
Needle Down Needle already in the lower position.
Defective or dirty sensor on the sampling-unit flex board.
Sticking needle-arm assembly.
Defective needle-drive motor.
Mainpass Valve already in mainpass.
Valve not connected.
Defective injection valve.
Needle Up/Mainpass Blockage in the sample loop or needle (no solvent flow).
Needle already in the upper position.
Defective or dirty sensor on the sampling-unit flex board.
Sticking needle-arm assembly.
Defective needle-drive motor.Valve already in mainpass.
Valve not connected.
Defective injection valve.
Table 12 Step Failures (continued)
Step Function Probable Failure Modes
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