7
Diagnostics and Troubleshooting
Troubleshooting
140
TSQ Quantum XLS and TSQ Quantum GC User Guide
Thermo Scientific
• The capillary column stationary phase is too thin for high concentration samples. Use a
higher capacity capillary column with a thicker stationary phase, or use a split injection
technique.
• The capillary column is bad. Replace the capillary column. See
.
Power Supply Issues
Xcalibur diagnostics detect most power supply issues. Power supply problems often involve a
blown fuse, faulty electronic components, or something as simple as a disconnected cable.
Fuses should be replaced by a Thermo Fisher Scientific Field Service Engineer.
Issue:
TSQ Quantum
XLS will not power on.
Possible causes/solutions
• The power cord is disconnected. Verify that the power cord is plugged in.
• Voltage is not coming from the electrical outlet. Verify that the electrical outlet is
operational.
• The Power Module is faulty. Contact Thermo Fisher Scientific Technical Support.
Issue:
The TSQ
Quantum XLS powers
on, but trips the circuit
breaker.
Possible causes/solutions
• The Power Module is faulty. Contact Thermo Fisher Scientific Technical Support.
• The forepump causes the circuit breaker to trip. Check forepump; replace it if necessary.
Sensitivity Issues
If you observe a drop in instrument sensitivity, you should determine if the sensitivity drop
was sudden or if it occurred gradually. A sudden loss of sensitivity can be the result of sudden
component failure or an unnoticed change in the analytical method. Simple errors such as a
plugged autosampler syringe or too low sample level in the sample vial can give the
appearance of instrument failure.
Gradual drops in sensitivity are usually the result of ion volume or lens contamination, and
are easily remedied by cleaning the ion volume or lenses.
The electron multiplier influences sensitivity and has a limited lifetime. Eventually the
electron multiplier must be replaced.
Improper GC maintenance is another cause of diminished sensitivity. It is important to
establish a routine maintenance program for the GC. See the
TRACE GC Maintenance
Manual
for more information on establishing a maintenance program.