Figure 85. Calibrate Dialog Box Showing The Automatic Page - Thermo Scientific LTQ Series Hardware Manual

5
Maintenance
Electron Multiplier Replacement
122 LTQ Series Hardware Manual
2. Click Save, and then click OK.
To complete the process of changing the electron multipliers, calibrate the electron
multiplier voltage, as described in the next procedure.
 To calibrate the electron multiplier voltages
1. Allow the system to pump down for at least 2 hours before turning on the high voltages.
(Thermo Fisher Scientific Product Support recommends 15 hours or more.)
2. Set up for infusing the tuning solution into the mass spectrometer as described in the
LTQ Series Getting Started Guide.
3. In the Tune Plus window, click the Calibrate button to open the Calibrate dialog box
(Figure 85).

Figure 85. Calibrate dialog box showing the Automatic page

4. Click the Semi-Automatic tab
Velos Pro).
(Figure 86 for the LXQ and LTQ XL or Figure 87 for the
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