Thermo Scientific EASY-Spray NG, Руководство пользователя

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7
Troubleshooting
Thermo Scientific EASY-Spray Series Ion Source User Guide 41
(continued) The source high-voltage (HV)
connection might be unstable. Check the high voltage contact on the back of the ion
source (
page 10 ) and the front of the mass spectrometer.
If the problem continues for the EASY-Spray NG ion
source, do the following:
1. Open Tune and view the Ion Source page ( Figure 20 ).
2. Compare the setting for the spray voltage to the
adjacent readback value.
A green box ( ) indicates that the parameter is
functioning properly.
If the problem continues for the EASY-Spray ion source, do
the following:
1. Open Tune Plus, choose View > Display Status View ,
and then click the All tab.
2. Choose Setup > NSI Source .
3. Compare the setting in the NSI Source dialog box to
the readback value for the NSI source’s absolute spray
voltage.
A green check mark ( ) indicates that
the parameter is functioning properly.
The ion source’s HV connector
has a loose connection. If you have a digital multimeter that can measure 20 M

(mega ohms), do the following:
1. Test the meter’s batteries, and then set the meter to the
appropriate resistance setting or range.
2. Measure the resistance from the HV pin on the back of
the ion source to the spring-loaded bolt located inside
the housing (
page 10 ).
A functional HV connection has a measured resistance
of 18–22 M

.
Table 7. EASY-Spray Series ion source problems, causes, and possible solutions (Sheet 3 of 3)
Problem Cause Solution