MassLynx goes straight to "acquiring", without triggering the inlet to inject - WKB53375

SYMPTOMS

• When starting a sample list run in MassLynx, the MS starts acquiring immediately
• The inlet does not perform injection sequence
• Inlet Events and Triggering are configured correctly; Event in 1 is selected
• LC systems running in standalone inject correctly

ENVIRONMENT

• MassLynx
• Xevo TQ Absolute
• Xevo TQ-S
• Xevo TQ XS
• XEVO G2 QTOF    
• XEVO G2 XS   

CAUSE

Faulty User Event PCB on the back of the mass spectrometer.

e.g. one system had Event In 2 wired to Event In 1, and Event In 1 wired to event In 2.

FIX or WORKAROUND

Fix - Replace the User Event PCB.

For Xevo TQ Absolute: User Event PCB Part Number: 700004382 (USER EVENT PCB ASSY)

Workaround for incorrectly wired PCB - Select Event in 2 in Inlet Configuration Events and Triggering.

ADDITIONAL INFORMATION