June 11, 2015, 715004752 Rev. A
Page 121
5.3 Troubleshooting
This section provides some causes of errors and recommended troubleshooting
actions. Keep in mind that the source of apparent detector problems may lie within
the chromatography or your other instruments, as well as the detector.
Most detector problems are relatively easy to correct. If you are unable to correct a
problem or a failed condition, contact Waters Technical Service (see
).
5.3.1 Diagnostic tests
The detector performs some user-selected diagnostic tests to help you troubleshoot
basic system problems. (See Online Help, for diagnostic descriptions and instructions
on how to use them.)
Error messages that can appear as you start up or operate the detector and
suggested corrective actions are described in Online Help.
5.3.2 Power surges
Power surges, line spikes, and transient energy sources can adversely affect detector
operations. Be sure that the electrical supply used for the detector is properly
grounded and free from any of these conditions.
5.3.3 Hardware troubleshooting
This section contains general hardware troubleshooting for the detector.
Table 5–2:
General system troubleshooting
Symptom
Possible cause
Corrective action
Analog output
incorrect
AU setting changed
Reset the AU setting.
Calibration or
energy error on
startup
Cuvette is installed, or
a UV absorber in flow
cell
1. Remove the cuvette.
2. Flush the flow cell.
3. Perform manual calibration.
Detector
inoperative
Fuse blown
Confirm the front panel display is
operational; if not, replace the ac
rear panel fuse.
No power at ac outlet
Test the outlet by connecting another
electrical unit known to be in working
order and determine whether it
operates.
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