"Instrument not present" seen at the bottom of MassLynx sample list page - WKB6798

SYMPTOMS

• No communication with the mass spectrometer
• Tune page is not responding
• "Instrument not present" message at bottom right of MassLynx window (see image below)

ENVIRONMENT

• MassLynx 4.1
• Masslynx 4.2
• LCMS system
• Mass spectrometer
• Xevo TQD
• Xevo SQD2
• Xevo TQ-S micro
• Acquity UPLC
• Xevo G2-XS

CAUSE

Lost communication with the mass spectrometer

FIX or WORKAROUND

1. If you have a Quad instrument, follow WKB25175 to perform a full reboot.
2. If you have a QTOF instrument, follow wkb300724 (instructions below) to perform a full reboot.
3. If the full reboot restores communication, Masslynx message "Instrument not present" will change to "Not scanning". If it does not, suspect the EPC has failed. 

ADDITIONAL INFORMATION