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Troubleshooting
This appendix contains basic information for troubleshooting basic system issues. Certain
activities may be carried out by the AB SCIEX trained Qualified Maintenance Person (QMP) in
the laboratory. For advanced troubleshooting, contact an FSE.
Table 14-1 System Issues
Symptom
Sensitivity loss
Frequent or extreme
contamination of the QJet ion
guide
Low vacuum pressure
For sales, technical assistance or service, contact an FSE or visit the AB SCIEX web site at
www.absciex.com for contact information.
System User Guide
RUO-IDV-05-0264-A
Possible Cause
Instrument or ion source
requires tuning and optimizing
Dirty curtain plate
Dirty orifice plate
®
Dirty QJet
ion guide, Q0 or
IQ0
Curtain Gas™ flow rate is too
low.
Low roughing pump oil level.
Corrective Action
For more information, refer to:
•
Operating Instructions —
Tune and Calibrate on
page 49
• Ion source Operator Guide
®
• Analyst
software Help
system
Clean the Curtain Plate on
page
124.
Clean the Front of the Orifice
Plate on page
124.
Contact an FSE or the local
Qualified Maintenance Person.
Verify, and if applicable,
increase the Curtain Gas flow
rate.
Check the roughing pump oil
level, and add oil if necessary.
Contact an FSE or the local
Qualified Maintenance Person.
4500 Series of Instruments
14
129 of 138
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