What Changed - Agilent Technologies 7697A Troubleshooting Manual

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Concepts and General Tasks

What Changed?

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When troubleshooting, keep the following points in mind:
• If the problem occurred suddenly, look for what changed.
Often sudden issues occur due to discrete events, such as
maintenance, changes in gas supplies, changing to a
different method or analysis, a defective part, and so
forth. Resolving a sudden change often involves changing
a consumable item, loading the correct method, or
replacing a defective part.
• If the problem happens gradually, for example, a steadily
rising baseline or gradual increase in ghost peak areas,
look for routine maintenance or changes in the method to
resolve the problem. These problems tend to be related to
the sample, sample preparation, the method, and the
consumables (such as the analytical column).
Agilent 7697A Troubleshooting