Investigating Stability Issues; Mass Assignment Is Unstable; Signal Response Is Unstable Or Shows Unexpected Drop-Out - Thermo Scientific TSQ 9000 Hardware Manual

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Troubleshooting

Investigating Stability Issues

Investigating Stability Issues

Mass assignment is unstable.

Table 31. Possible Remedies for Unstable Mass Assignment
Wait at least 30 minutes after the system has reached vacuum before running a mass calibration. If the system was recently pumped
down, the internal components may not be at temperature yet.
Wait at least four hours after the system reaches temperature before running a mass calibration. If you started with a cold system, it can
it can take 30 minutes after the system has achieved vacuum for it to reach temperature.

Signal response is unstable or shows unexpected drop-out.

Table 32. Possible Remedies if Signal Response is Unstable or Shows Unexpected Drop-out
There is a problem with the filament or lens control. See
Check the system for leaks and address them. See
There is a contamination problem. See
There is a problem with the electrical connection to the ion source cartridge. This most often occurs when swapping the ion source
cartridge, such as from EI to CI, or after cleaning the ion source cartridge. See
120 TSQ 9000 Hardware Manual
Stability issues occur when the instrument is not consistently precise and when accurate
results are not reproducible. In addition, sample preparation, spiking errors, sample injection
errors, and lack of routine maintenance on the instrument may cause false stability symptoms.
Before troubleshooting for stability issues, try simple solutions first, such as cleaning the ion
volume and lenses or running a leak check diagnostic. Usually, a hardware fault that affects
stability will show different symptoms than those attributed to stability.
WARNING
issue that requires removing a cover on the TSQ 9000 mass spectrometer,
you should power-off and vent the instrument to avoid harming yourself.
AVERTISSEMENT RISQUE D'ÉLECTROCUTION : lorsque vous cherchez à
résoudre un problème nécessitant d'enlever le couvercle du spectromètre de
masse TSQ 9000 mettez hors tension et ventilez l'instrument pour éviter de
vous blesser.
Investigating Filament and Lens Control Issues
Investigating Vacuum Issues
Investigating Contamination Issues
ELECTRICAL SHOCK HAZARD: When troubleshooting any
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for details.
for details.
Reinserting the Ion Source Cartridge
for details.
for details.
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