4-6 Diagnostic Tests and Troubleshooting
General troubleshooting
This section suggests possible causes of errors and recommends
troubleshooting actions. Keep in mind that the source of apparent detector
problems can actually be the chromatography, or it can involve other system
components.
Most detector problems are relatively easy to correct. If, after running the
diagnostic functions applicable to your problem and troubleshooting the
detector, you cannot correct an error condition, contact Waters’ Technical
Service department.
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.
Power LED
The power LED, on the detector’s front panel, indicates when the instrument
is powered-on or powered-off. It is constant green when the instrument is
working properly.
Lamp LED
The lamp LED, to the left of the power LED, indicates the lamp status.
Lamp LED indications
LED mode and color Description
Unlit Indicates the detector lamp is extinguished.
Constant green Indicates the detector lamp is ignited and the
detector has passed power-up wavelength
verification.
Flashing green Indicates the detector is initializing or verifying
wavelength calibration.
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