Agilent Technologies 5975C TAD VL MSD Troubleshooting And Maintenance Manual page 80

3
CI Troubleshooting
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
The CI ion source is dirty.
Clean the ion source. See
information.
Too much air or water in the system
See
source.
80
"Air Leaks" on page 60. After eliminating these problems, clean the ion
"To Clean the CI Ion Source"
5975 Series MSD Troubleshooting and Maintenance Manual
Operation Manual.
on page 164 for more