PDA-100 Photodiode Array Detector
4-8
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detector again to verify that the problem has been resolved. If the error
message appears again, contact Dionex Technical Support for assistance.
If you see a weak light (or no light at all) shining onto the business card,
the lamp intensity is too low. Check that the flange of the lamp is aligned
with the two locating pins in the optical bench (see Figure 5-3); if the
flange is aligned, the lamp is defective and should be replaced. (For lamp
replacement instructions, see Section 5.7 or Section 5.8 for the deuterium
lamp or tungsten lamp, respectively.) If the error message appears again,
contact Dionex Technical Support for assistance.
•
Blockage in cell
Flush the cell with eluent.
4.7
Wavelength Calibration Fails
•
Flow cell contains air bubble or old mobile phase
Flush mobile phase through the cell.
•
Cell not clear or mobile phase has high background absorbance
Clean the cell as instructed in Section 5.2. If the detector fails the wavelength
calibration again, replace the flow cell windows (see Section 5.5).
•
Deuterium lamp may be defective
If the
Deuterium
LED flashes or fails to light, replace the deuterium lamp
If the
Deuterium
LED is lighted (but is not flashing), run both the wavelength
calibration and the wavelength verification from the Wellness panel (see
Section 4.15.2). If these fail, remove the flow cell and repeat the wavelength
calibration and the wavelength verification.
If the wavelength calibration still fails, contact Dionex Technical Support for
assistance.