Waters 2475, Operator'S Manual, Page: 164 / 228

5-6 Error Messages, Diagnostic Tests, and Troubleshooting
Filter initialization
failure: No reference
energy
Unit sensors cannot
find any light energy
before homing the
optical filter.
1. Ensure solvent is
flowing.
2. If the problem
persists, power-off
and power-on again.
3. If the problem
persists, call Waters
Technical Service.
Filter initialization
failure: No response
Unit sensors cannot
identify any dark
regions.
1. Ensure solvent is
flowing.
2. If the problem
persists, power-off
and power-on again.
3. If the problem
persists, call Waters
Technical Service.
Filter initialization
failure: Shutter
position
Unit sensors cannot
find the shutter
position.
1. Ensure solvent is
flowing.
2. If the problem
persists, power-off
and power-on again.
3. If the problem
persists, call Waters
Technical Service.
Grating initialization
failure: Backlash too
high
The difference between
the forward and reverse
peak positions of
special features is
greater than 1 step.
1. Ensure solvent is
flowing.
2. If the problem
persists, power-off
and power-on again.
3. If the problem
persists, call Waters
Technical Service.
Error messages preventing operation (Continued)
Error message Description Corrective action