Agilent Technologies 1220 Infinity II LC User Manual page 177

9
Test Functions and Calibration
Diode Array Detector (DAD)
Figure 54 Intensitiy Test Results (report)
In case of low counts in one or more ranges, start the testing with the
comparison of values with flow cell vs. flow cell removed.
Contaminations of the cell windows and/or the lenses (there are 3 between
vis-lamp and flow cell), will reduce the light throughput.
If the detector fails in the range 501 nm - 950 nm, check
• is the VIS-lamp ON? If not, turn it on.
• is VIS-lamp glass bulb blackended or broken? If yes, replace VIS-lamp.
1220 Infinity II LC System User Manual 177