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Transpector MPH Operating Manual
2 Pull the electrical leads away from the sensor.
Do not bend the leads.
3 Using the Phillips head screwdriver, remove the gold screws (C - one is hidden
in the figure) that hold the ion source onto the quadrupole. There are three
screws.
Figure 6-7 Remove screws holding ion source
4 Lift the ion source off the quadrupole assembly.
5 Install the new ion source by reversing the above steps.
6 Using an ohmmeter, check:
that both filaments are not shorted to ground or to any of the lenses
that the filament leads show a filament resistance of approximately 0.8 at
the feedthrough between each filament pin and the filament common pin,
refer to Figure 6-1 on page 6-5 for pin out locations
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