
Chapter 8 Maintenance and Troubleshooting
8-16 PerSeptive Biosystems
8
Peaks not symmetrical Laser intensity too
high
Decrease laser intensity by
using the slider controls on
the Manual Laser/Sample
Positioning control page.
Sample contains
more than one
component
Purify sample before
analyzing.
On Voyager-DE PRO
and Voyager-DE
STR systems,
isotopes are only
partially separated,
because you are
using a setting very
close to laser
threshold
Increase laser intensity by
using the slider controls on
the Manual Laser control
page to improve symmetry,
but data is accurate as is.
NOTE: Increasing the laser
intensity may decrease
resolution.
Signal is saturating
detector
Decrease laser intensity by
using the slider controls on
the Manual Laser control
page.
Table 8-1 Spectrum Troubleshooting (Continued)
Symptom Possible Cause Action
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