Agilent Technologies 7250 Troubleshooting And Maintenance Manual page 41

2 General Troubleshooting
Difficulty with the high vacuum pump(s)
If the pump failed to reach 50% of full speed within 10 minutes, or experienced a
fault.
You must switch the MS off and back on to remove this error message. Ensure
the turbo pump has slowed down before switching off the MS. The message will
reappear if the underlying problem has not been corrected.
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High foreline pressure
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Internal MS communication fault
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Lens supply fault
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7250 Accurate-Mass Q-TOF Troubleshooting and Maintenance Manual
Large vacuum leak is preventing the turbo pump from reaching 50% of full
speed
Foreline pump is not working correctly
Turbo pump(s) is not working correctly
MS electronics are not working correctly
Excessive carrier gas flow (typically > 5 mL/min)
Excessive solvent volume injected
Large vacuum leak
Severely degraded foreline pump oil
Collapsed or kinked foreline hose
Foreline pump is not working correctly
MS electronics are not working correctly
Electrical short in the analyzer
MS cannot maintain the voltage setpoint
MS electronics are not working correctly
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