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4.4 Maintenance/Check Procedure
4.4 Maintenance/Check Procedure
4.4.1 Checking the Energy and Wavelength Accuracy of Light Source Lamp
(1)
Check of D
Lamp Energy and Wavelength Accuracy
2
GLP
Press
key, [numerical] key [3], and then [ENT] key.
Check actions are automatically taken.
D2
ENERGY
192000
An indicated energy value corresponds to the reference-
side energy at 250 nm. Wavelength accuracy is checked
utilizing the bright lines of the D
When deviation is within ±1 nm, "GOOD" will be indicated.
If deviation exceeds ±1 nm, "FAIL" will be indicated.
When no bright lines have been detected, "NOT
DETECTED" is indicated. In this case, confirm mounting
of the flow cell, and then turn on power supply again.
If the situation does not improve, contact the nearest
maintenance service company authorized by Hitachi High-
Technologies.
NOTE: When the D2 ENERGY level has fallen to 50% or
lower of the level at the start of lamp use, the D
lamp should be judged to have reached the end of
service life. The end of lamp lifetime is judged
based on a fall in energy level and on fluctuations
of the baseline (data fluctuation and noise).
(2)
Check of Hg lamp wavelength accuracy
GLP
Press
key, [numerical] key [4], and then [ENT] key.
Check actions are automatically taken.
WL ACCURACY (254 nm)
GOOD -1 nm
4 - 10
ACCURACY (486 nm)
GOOD
0 nm
lamp at 486 and 656 nm.
2
(656 nm)
GOOD -1nm
2
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