4 • Troubleshooting
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• [415] Cycle time expired before INIT step was completed.
When the cycle time expires, the AS ignores the cycle time and
delays injection until the
INIT step is complete. See Section 2.7.5
for details.
Possible Causes: The selected cycle time was too short.
Actions: Select a longer cycle time (see Section D.5.4
).
• [418] DSP not able to home XYZ motor arm
Possible Causes:
• Physical blockage of the sampling arm
• DSP malfunction
Actions:
1. Turn off the AS power.
2. Check for an obstruction in the autosampler compartment.
3. Check for freedom of movement in all three axes of the sampling
arm.
4. Turn on the power again. If the problem persists, contact Dionex.
• [421] Timed events step took so long to execute that at least one
subsequent step was missed.
Possible Causes:
• Insufficient time allowed for loading the sample loop
Actions:
• On the method’s TIMED EVENTS screen, set the injection valve to
the load position in the
INIT step (the default).
• If the valve is not set to load in the INIT step, be sure to allow
enough time between the
LOAD and the INJECT parameters for the
loop to be completely loaded. The time needed depends on the
sample syringe volume and the selected syringe speed (see
Section 3.7
).
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