Waters 2489, Operator'S Manual

Page: 171 / 234

User-selected diagnostic tests 5-9
To perform user-selectable diagnostic tests:
1. Press the DIAG key from the detector front panel. The detector displays
the diagnostic tests choice list.
Diagnostic tests choice list
2. To access a specific diagnostic test, press the up or down arrow key to
highlight the test you want to run and then press Enter, or press a
number from 1 to 6 corresponding to the test number on the detector
keypad. Choices that display other choices are indicated by >>.
Sticky diagnostic tests remain in effect until you disable them. When a
sticky diagnostic test is active, the detector absorbance screen displays a
wrench icon (see the figure below).
• You can disable a specific sticky diagnostic test by resetting it to the
default settings.
• You can disable all active sticky diagnostic tests by pressing DIAG
and then selecting “1, Reset instrument.”
• If no sticky diagnostic tests are active, the wrench icon does not
appear on the absorbance screen. When you power off the detector,
all sticky diagnostic tests are disabled.
Absorbance screen with sticky diagnostic tests active
Reset diagnostics
Wrench icon