Troubleshooting
5-21
Ethernet problems
Bad Ethernet
cable.
Replace the Ethernet cable.
Keypad not
functioning
Keypad defective
1. Recycle power to the detector
and run the keypad diagnostic
test.
2. Contact Waters Technical
Service.
Deuterium lamp
does not light
Faulty lamp
Replace the lamp.
Lamp not plugged
in
Plug in the lamp connector.
Bad lamp power
supply board
Contact Waters Technical
Service.
Lamp switch off
Check the rear panel connections
(may be programmed to turn off
the lamp) or timed event within a
method (may be programmed to
turn off the lamp).
No sample and
reference energy
Lamp burned out
Attempt to reignite using the
Lamp key.
Replace the lamp.
Lamp off
Check the lamp icon.
Run the Sample & ref energy
diagnostic test.
In dual wavelength
mode, time scale is
incorrect
Data rate on
controller is
>
1
pt/sec
In dual wavelength mode, you
must select a data sampling rate
of 1 point per second.
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.
General system troubleshooting
Symptom
Possible Cause
Corrective Action
Summary of Contents for 2489
Page 8: ...viii...
Page 32: ...1 16 Theory and Principles of Operation...
Page 134: ...3 66 Preparing the Detector...
Page 193: ...Warnings that apply to all Waters instruments A 9...
Page 204: ...B 6 Detector Specifications...
Page 220: ...D 14 Solvent Considerations...