Can Not Complete Autotune - HP 5973 MSD Hardware Manual

 Troubleshooting
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Can not complete autotune

Possible Cause
Wrong or corrupted tune file.
Action
Check the tune parameters.
Possible Cause The m/z 28/27 ion ratio (for methane) is incorrect. The correct ratio should be
between 1.5 and 5.0.
Action
If the ion ratio is incorrect, adjust it. See page 54.
Possible Cause
The CI ion source is dirty.
Action Clean the ion source. See the Maintenance chapter in this manual for more
information.
Possible Cause Too much air or water in the system.
Action
See the Leaks section of this chapter for more information. After eliminating these
problems, clean the ion source.
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