Agilent Technologies 5975C TAD VL MSD Troubleshooting And Maintenance Manual page 52

2
General Troubleshooting
There is no emission current
• Filament is not connected properly; try the other filament
• Filament has failed; try the other filament
• MSD electronics are not working correctly
There is not enough signal to begin tune
• Corrupted tune file
• Poor mass axis calibration
• Amu gain or offset is too high
• Calibration vial(s) empty or almost empty
• Excessive pressure in the analyzer chamber
• Air leak
• Electron multiplier voltage is too low
• Signal cable is not connected
• Electrical leads to the detector are not connected correctly
• Electrical leads to the ion source are not connected correctly
• Filament shorted to the source body
52 5975 Series MSD Troubleshooting and Maintenance Manual