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Messages
The GC regularly monitors the state of its detectors, pneumatics, oven, PC
boards, and other components. If a problem exists, the GC displays a message,
beeps or activates an LED, and puts itself in a “safe state” if the problem could
be dangerous to the user.
In addition to the information in this chapter, there is device-specific
troubleshooting and maintenance information in many of the chapters in this
and the Inlets and Detectors volumes.
There are six message types:
Not Ready
A Not Ready message means that some component of the GC is not ready to
begin a run. When the GC is not ready, the Not Ready LED lights but there is no
popup message on the display. Press [STATUS] to see a message that explains
why the GC is not ready. Not ready messages are recorded in the run log.
Method Mismatches
These messages appear if you load a method that contains parameters that do
not match the current GC configuration. One of two things occurs if the method
and configuration do not match:
• If the parameter that does not match is set from the keyboard, the method
overwrites the current parameter; the message states that the current param-
eter has been replaced. For example, if the gas type currently configured
differs from the one in the method, the current gas type is overwritten with
that of the method.
• If the parameter that does not match is hardware dependent, the method is
ignored and the current setpoints remain; the message states that the method
parameter is being ignored. For example, if the method indicates that the
front detector is an NPD but you have replaced it with an FID, the method
NPD information is ignored and the current FID parameters remain.
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