CI Troubleshooting 3
Troubleshooting and Maintenance Manual 65
The CI ion source is dirty.
Clean the ion source. See the Agilent 7200 Accurate-Mass Q-TOF GC/MS
System Operation Manual.
Cannot complete Autotune
Wrong or corrupted tune file
Check the tune parameters.
The m/z 28/27 ion ratio (for methane) is incorrect. The correct ratio should be
between 1.5 and 5.0.
If the ion ratio is incorrect, adjust it. See the Agilent 7200 Accurate-Mass
Q-TOF GC/MS System Operation Manual.
The CI ion source is dirty.
Clean the ion source. See the Agilent 7200 Accurate-Mass Q-TOF GC/MS
System Operation Manual.
Too much air or water in the system
See “Air Leaks” on page 52. After eliminating these problems, clean the ion
source.
The CI ion source is dirty
Clean the ion source. See the Agilent 7200 Accurate-Mass Q-TOF GC/MS
System Operation Manual.
Air leak
Run Methane Pretune (in PCI). A visible peak at m/z 32 indicates air in the
system. Check for and correct any leaks. See “Air Leaks” on page 52. After
eliminating all air leaks, clean the ion source.
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