Exchanging The Source Lens - Agilent Technologies 1100 Series Reference Manual

4
Repairing the Variable Wavelength Detector
All other repairs within the optical unit require special knowledge and training.
Therefore these repairs and calibrations must be performed by Agilent Technologies
trained service engineers.
In case of the following problem symptoms call your local Agilent Technologies
service representative for help:
Troubleshooting should be performed with a clean and bubble-free flow cell and with
NOTE
a new deuterium lamp or one in good condition.
• low intensity readings after replacement of lamp and/or cleaning of the flow cell
• calibration failures (zero-order, holmium oxide lines or 656 nm emission lines),
• excessive noise and/or drift,
• grating drive failures,
• filter drive failures, and
• no intensity readings on one or both, the reference and/or sample side.
Exchanging the Source Lens Assembly
When required
Tools required
Parts required
Preparation for this procedure are:
•
Turn off the lamp.
•
Switch off the detector, and disconnect the cables.
•
Remove the detector from stack and place it on the
working bench.
•
Remove the front cover, top cover and top foam
section, see ""Removing the Top Cover and Top
Foams" on page 103.
108 1100 Series Variable Wavelength Detector Reference Manual
and/or source lens assembly,
The lens assembly may be replaced when the transmission of light is
reduced and a lamp exchange does not improve the light-throughput
Screwdriver POZI 1 PT3
Hexagonal wrench 1.5 mm
Source lens assembly G1314-65008