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Waters

No Internal Calibration Beam on QDa - WKB3597

Article number: 3597

SYMPTOMS

  • No Internal calibration Beam in either Ion Mode
  • ESI signal is present when infusing through capillary
  • Approximately 800V is seen in the capillary voltage, read back on the tune page during the calibration routine (after the internal calibration heater temperature has stabilized)

ENVIRONMENT

  • QDa

CAUSE

Contact strip inside Source Enclosure is not making contact with Internal cal pin

FIX or WORKAROUND

Replace ESI Source Enclosure (700009612)

ADDITIONAL INFORMATION

You can often fix this by pulling down (un-bending) the contact strip inside source enclosure. See KB article 5222 -  No Internal Calibration Beam on QDa for more details. Ensure the QDa has been placed in standby before attempting any rework action.


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