WATERS CORPORATION 2424, Operator'S Manual, Page: 128 / 196

5-2 Diagnostic Functions and Troubleshooting
Error messages
Startup error messages
Startup confidence tests are executed on detector startup. They run after the
detector is powered-on, and they determine whether the detector’s electronics
are performing properly.
If one or more of the startup confidence tests fail, the detector beeps and
displays an error message.
When you encounter an error message, use the Enter key to clear it and
continue operating the detector while following any recommended corrective
action.
Operational error messages
During initialization and operation, the detector might display an error
message screen. Errors described on this screen can be catastrophic in nature,
preventing further operation of the detector, suspending the light scattering
display and halting output. The error messages can also be informational,
advising you to take appropriate action.
When you encounter an informational error message, press Enter to clear the
message and continue operating the detector, following any recommended
corrective action.
When you encounter a catastrophic error, power-off and then power-on the
detector. If the error persists, review “General troubleshooting” on page 5-13 .
If you cannot resolve the problem, contact Waters Technical Service.
User-selectable diagnostic functions
Overview
You can run diagnostic functions to troubleshoot the detector and verify that
its electronics and optics are working properly.