6.1 Troubleshooting and Corrective Action
6-3
CBM-20A/20Alite
6
Analysis and control
Symptom Corrective action
The scheduled end time is
different to the time required for
the actual analysis.
The scheduled end time is recalculated with the execution of
each line in the sequence table. In sequences with lines
containing two or more analysis (or injection) processes, only
the time for the first analysis is calculated and so the scheduled
end time will be incorrectly calculated in the following cases:
Racks are replaced frequently with a changer.
Extremely short analyses are executed repetitively.
The oven temperature is changed with each analysis and
[WaitCTO] is displayed.
A P.MAX error occurs during
autopurge.
Verify that the P-PMAX value for the solvent delivery module is
appropriate (i.e., not too small).
Autopurge is not possible.
Autopurge is possible only for combinations of LC-30A/20A-
series Solvent Delivery Modules and Autosamplers.
The mobile-phase reserve-volume
warning is displayed.
No warning is displayed if the warning check box in the "Mobile
Phase Reserve Volume Setting" window is not selected, or if 0
is set as the reserve volume.
A buzzer sounds on the solvent
delivery module or autosampler
when an error occurs.
If an LC-30A/20A-series Solvent Delivery Module, Autosampler,
or UV/UV-VIS/Fluorometric Detector is connected, the buzzer at
the LC-30A/20A component with the smallest link address
sounds when a CBM error occurs.
The time program cannot be
edited.
If the current system configuration is different from the system
configuration when the time program was created, the functions
for non-existent modules cannot be changed. Delete the
applicable line and add a new one.
"4.4 Gradient Analysis Using Time Programs" P. 4-28
The sequence is not registered to
the analysis queue when is
clicked.
The following operation is performed when is clicked:
1. If the analysis queue is empty, the sequence is registered to
the queue and analysis starts.
2. If there are sequences registered to the analysis queue, new
sequences cannot be registered to the queue using .
The sequence is registered to the analysis queue in the
"Editing" tab page.
The external input/output
terminals on the back of the
system controller do not operate
properly.
The detector is not auto-zeroed
when analysis starts.
The Chromatopac does not start
when analysis starts.
Verify that the configuration parameters are set correctly for the
system controller.
"5.12 Parameter Details" P. 5-57
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