WATERS CORPORATION 2424, Operator'S Manual, Page: 130 / 196

5-4 Diagnostic Functions and Troubleshooting
“Sticky diagnostics” tests
The detector uses two types of user-selectable diagnostic tests: persistent and
nonpersistent. A persistent test, also called a “sticky diagnostic,” remains
enabled until you disable it. Nonpersistent tests end, and previous operating
conditions are restored as soon as you exit the test.
When a sticky diagnostic is active, the detector Home screen displays a
wrench icon.
• You can disable a sticky diagnostic by resetting it to the default settings.
• You can disable all active sticky diagnostics by pressing DIAG 1, Reset
Flow & Diags.
If no sticky diagnostics are active, the wrench icon does not appear in the
home screen.
Lamp, display & keypad Lists diagnostic functions for lamp,
display, and keypad:
1. Change lamp
5. Lamp history
6. Test keypad
7. Test display
8. Previous choices
Gas & temp control Lists diagnostic functions for gas
and temperature control:
1. Gas control
9. Neb & drift heaters
10.Opt & col heaters
11.Previous choices
Sample & ref energy Allows you to view the raw sample
signal and reference energy signal
information.
Service Lists diagnostic functions used by
Waters service personnel.
Diagnostic functions (Continued)
Diagnostic function Description