Agilent Technologies 5975C TAD VL MSD, Troubleshooting And Maintenance Manual

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34 5975 Series MSD Troubleshooting and Maintenance Manual
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General Troubleshooting
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Calibration valve is not working correctly
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Bad signal cable connection
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Filament has failed or is not connected correctly
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Bad ion source wiring connection
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Bad detector wiring connection
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Failed electron multiplier horn
Peaks are tailing
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Active sites in the sample path
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Injection is too large
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Incorrect GC inlet temperature
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Insufficient column flow
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GC/MSD interface temperature is too low
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Ion source temperature is too low
Peaks are fronting
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Column film thickness mismatched with analyte concentration (column
overload)
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Initial oven temperature is too low
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Active sites in the sample path
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Injection is too large
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GC inlet pressure too high
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Insufficient column flow
Peaks have flat tops
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Insufficient solvent delay
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Incorrect scale on the display
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Injection is too large
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Electron multiplier voltage is too high