"Instrument Voltage Readback" error on ACQUITY QDa Mass Detector - WKB112302

SYMPTOMS

• "Instrument Voltage Readback" error on ACQUITY QDa Mass Detector
• Fails after source pressure test

ENVIRONMENT

• ACQUITY QDa Mass Detector
• RADIAN ASAP Direct Mass Detector

CAUSE

The critical readback report indicates that the detector fails startup due to turbo power out of range (36.6 W and not 37.0 W).

FIX or WORKAROUND

Replace the aperture disk.

ADDITIONAL INFORMATION

For part numbers, see the article What are the part numbers for the source aperture carrier, aperture disk, and sample cone for an ACQUITY QDa? - WKB52732

For a video to demonstrate how to replace the aperture disk, click here