5-22 Error Messages, Diagnostic Tests, and Troubleshooting
Detector inoperative Open (blown) fuse Ensure the front panel
display is operational.
Replace the AC rear
panel fuses, if
necessary.
No power at outlet Check outlet by
connecting an electrical
device known to be in
working order and see
if it operates.
Front panel display
fails to illuminate
Broken electrical
connection
Check electrical
connections.
Open (blown) fuse Check and, if
necessary, replace
fuse(s).
Bad LCD or control
board
Call Waters Technical
Service.
Front panel displays
odd characters
Faulty EPROMs or bad
LCD control board
Call Waters Technical
Service.
Keypad not functioning Defective keypad 1. Power-off and
power-on again.
2. Run the keypad
diagnostic test.
3. If the problem
persists, call Waters
Technical Service.
No sample and
reference energy
Lamp life expired 1. Attempt to reignite
by selecting Lamp
(Shift, 1).
2. Replace the lamp.
Lamp off 1. Check the lamp icon.
2. Run the Sample &
ref energy diagnostic
test.
General hardware troubleshooting (Continued)
Symptom Possible cause Corrective action
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