ACQUITY PDA "Communication Failure" cannot be cleared with the reset PDA function - WKB73031

SYMPTOMS

• "Communication Failure" in the ACQUITY console of the PDA

ENVIRONMENT

• Empower 3
• ACQUITY PDA
• ACQUITY console
• LAC/E
• Waters Driver Pack 4

CAUSE

Unknown

FIX or WORKAROUND

1. Open WatersDHCPserver and delete the ACQ-PDA row.
2. Switch off the ACQUITY UPLC PDA Detector.
3. Switch on the ACQUITY UPLC PDA Detector and confirm that ACQ-PDA is back in the WatersDHCPServer (perhaps with another IP address; it doesn't matter).
4. Open the run sample and confirm that the control panel is ok for ACQUITY UPLC PDA Detector.
5. If the control panel is not ok, run Drive:\Empower\InstrumentServer\Bin\Stopacquityprocess.cmd from the LAC/E32 (after closing the run sample and verifying that there's no acquisition on the LAC/E32).

ADDITIONAL INFORMATION

Rebooting the LAC/E32 did not resolve this issue.