Agilent Technologies 7250 Troubleshooting And Maintenance Manual page 43

2 General Troubleshooting
The high-vacuum pump is not ready
•
•
•
•
•
The system is in vent state
The message says the system is vented, but if the fault has just occurred it may
still be under vacuum and the turbo pump may still be at high speed. Wait at least
30 minutes after seeing this message before you actually vent the MS.
Venting the MS too soon after this message appears can damage a turbo
C AU T I O N
pump.
•
•
•
•
There is no emission current
•
•
•
•
There is not enough signal to begin tune
•
•
•
7250 Accurate-Mass Q-TOF Troubleshooting and Maintenance Manual
One of the three Turbo pumps could have failed
Turbo pump is on but has not had enough time (10 minutes) to reach 80% of
its normal operating speed
Turbo pump is not working correctly
Foreline pump has not reached its target of 10 Torr after 10 minutes
MS electronics are not working correctly
System was vented purposely (no problem)
Fan fault has turned off the high-vacuum pump (power cycle the MS to clear
the fault)
Fuse for the high-vacuum pump has failed
MS electronics are not working correctly
Check tune file to be certain that emission current is not = 0
Filament is not connected properly; try the other filament
Filament has failed; try the other filament
MS electronics are not working correctly
Corrupted tune file
Poor mass axis calibration
Width gain or offset is too high
43