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2
Troubleshooting
Investigating Filament and Lens Control Issues
Investigating Filament and Lens Control Issues
Filament has burned out.
Possible Remedies
Make sure the lens driver board is connected to its bracket. See
Locate and fix all air leaks into the carrier lines or vacuum manifold.
Make sure the filament wires are still connected to the source interface board. See
Run a Filament Check diagnostic to narrow down the source of the problem. Then replace the filament, as described in
Filament.
Filament does not last long.
Possible Remedies
Run a Leak Check diagnostic to check the system for air leaks and then address them. Use the Tetrafluoethane gas to find the leak.
Reduce the emission current in the instrument method.
Increase the time for your first scan until after the solvent peak has passed.
Diagnostics indicate there is a problem with lens voltages.
Possible Remedies
Make sure the lens driver board is attached to the bracket. If the board isn't fully connected to the 20-pin feedthrough, you may get odd
results. See
Lens Driver Board
Make sure all lens wires are clear of metal parts and the magnet yoke. Even though the wires are insulated with glass braid, electrical
shorts may still be possible if the wires are touching metal.
Make sure the lenses are properly aligned in the ion cartridge sleeve.
128
ISQ 7000 Hardware Manual
Filament Check and Lens Check diagnostics can test the filament and lenses of the ISQ 7000
system. Handle the lenses with care. Damaged lenses may cause short circuits, which prevent
the lens supplies from functioning properly.
WARNING ELECTRICAL SHOCK HAZARD: When troubleshooting any issue that requires
removing a cover on the ISQ 7000 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 ISQ 7000, mettez
hors tension et ventilez l'instrument pour éviter de vous blesser.
for details.
Lens Driver Board
for details.
Replacing a Dual Filament
for details.
Replacing a Dual
Thermo Scientific
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