Thermo Scientific TSQ Quantum XLS User Manual

7
Diagnostics and Troubleshooting
Troubleshooting
128 TSQ Quantum XLS Series User Guide Thermo Scientific
Tuning Issues
You can suspect a tuning problem when Xcalibur auto tune and calibration fails. The auto
tune and calibration procedure performs several functions, and issues or error messages
indicate different problems. Diagnostics can usually uncover a tuning problem.
Issue: “Cannot find
Calibration Gas” error
message received.
Possible causes/solutions
• There is a mechanical problem with the ion source or lenses. Verify that an EI ion volume
is installed. Verify correct orientation and cleanliness of ion volume. Verify cleanliness and
correct operation of lenses.
• Tune file settings are out of usable range. Restore default tune settings and calibration
settings. Run Auto Tune and Calibration. See “Tuning and Calibrating” on page 61.
• The calibration gas vial is empty. Add 100 μL (max) of calibration compound to
calibration gas vial. See “Adding Calibration Compound” on page 102.
Issue: The electron
multiplier gain
calibration fails.
Possible causes/solutions
• The electron multiplier has not been given sufficient time to outgas since venting. Allow
more time to pump out.
• The GC column flow is too high. Lower it to 1 mL/min.
• The multiplier is near the end of its lifetime. Multipliers typically last about 2 to 3 years
before they are too noisy for the gain to be set accurately. Contact Thermo Fisher
Scientific Technical Support.
• The multiplier power supply is faulty. Contact Thermo Fisher Scientific Technical
Support.
• The filament is the source of too much background noise. See “Filament and Lens
Control Issues” on page 119 for more information.
• Chemical background in the manifold is elevated. Remedy leaks or sources of water
contamination in carrier gas. See “High Vacuum Issues” on page 121 for more
information.
• The difference between the electron energy and the setpoint is greater than 5 V. Contact
Thermo Fisher Scientific Technical Support for assistance.

Thermo Scientific TSQ Quantum XLS Specifications

General

Brand	Thermo Scientific
Model	TSQ Quantum XLS
Category	Laboratory Equipment
Language	English