Removing The Mp0 And Mp1 Ion Guides - Thermo Scientific LTQ Series Hardware Manual

5
Maintenance
MP0 and MP1 Ion Guides Maintenance

Removing the MP0 and MP1 Ion Guides

102 LTQ Series Hardware Manual
4. Carefully lift up the top cover plate by its two handles, and place it upside down
(supported on its handles) on the clean, lint-free work surface.
CAUTION Do not pull the cover too hard. Instead, rock it back and forth to loosen it. Lift
it straight up and not at an angle to avoid damaging the bottom ion optics.
Be careful not to damage the components on the bottom side of the cover plate.
5. Cover the opening in the top of the vacuum manifold with a large, lint-free tissue.
 To remove the MP0 and MP1 ion guides from the top cover plate
CAUTION Be careful not to bend or break the lead pins on multipoles MP0
and MP1.
1. Disconnect the electrical leads to multipoles MP0 and MP1, lens L1, and the split gate
lens (Figure 71, Figure 72
page 107).
2. Remove the MP1 ion guide as follows:
a. Hold multipole MP1 and the split gate lens with one hand, and with the other hand
loosen and remove the two thumbscrews that secure the MP1 support bracket to the
top cover plate.
Tip If the thumbscrews are too tight, insert a small hex driver into the
thumbscrew holes to loosen them.
b. Slide the MP1 support bracket away from MP1 until it disengages from MP1.
c. Remove multipole MP1 and the split gate lens and place them on the clean, lint-free
work surface.
on page 105, Figure 73 on page 106, or Figure 74 on
Thermo Scientific