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6
Troubleshooting the Xevo TQ-GC
This chapter describes the recommended troubleshooting procedures.
6.1 System troubleshooting
A few basic instructions for performing system troubleshooting:
• Examine the system, and first consider the most likely causes of the problem. Unresponsive
instruments can indicate that power or signal cables are disconnected or improperly
connected. Similarly, a gas or vacuum leak can indicate defective plumbing connections.
• Compare current system operation with the way the system operated before the problem
arose. To identify normal operating conditions, maintain a daily log in which you note overall
system performance and parameters. Specifically, measure the performance of individual
instruments using known samples, preferably the ones used for instrument acceptance. You
must know, for example, when system-tuning parameter values approximate those specified
at the time a test sample was run or when the lens settings needed to achieve optimum
sensitivity are higher than those specified earlier. A need to specify extreme values to attain
good results implies that some part of the system requires attention.
• Consult the troubleshooting information contained in the tables on the following pages. The
tables identify possible causes of a symptom and suggest corrective actions. If you trace a
problem to a system instrument other than this instrument (the GC or autosampler, for
example), consult the operator's guide for that instrument.
6.2 Component hardware troubleshooting
The following sections provide suggestions for resolving hardware problems.
6.2.1 No ion beam
The following table describes the possible causes and corrective actions for this problem.
April 27, 2020, 715005564 Ver. 01 (previously released as Rev. A)
Page 105
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