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NOTE : When handling the components inside the electron gun (the cap, the Wehnelt, the
anode, and the cartridge filament), use clean gloves to keep them free of particles
and smudges.
CAUTION : The electron gun weighs 2.5 kg. When opening the electron gun, do not
release you hand until the electron gun comes to a halt. Releasing your
hand mid-way can potentially cause pinched fingers or injury.
The anode has a screw-in structure. Put on gloves, and remove the anode by turning it
counterclockwise. Cover the removed anode with clean aluminum foil or place it in a vinyl
bag to protect it from particles or scratches.
Figure 5.4-1 Figure5.4-2 Removing the Anode
Opening and Closing the Electron Gun
5. Remove the liner pipe.
To take out the liner pipe, first pull out the liner tube.
For a description on how to pull out the liner tube, see Section 5.3 Replacing the condenser
lens aperture. After removing the liner tube, pull out the liner pipe. Clean a tool, such as a
hex wrench, insert the tool through the pipe head, and pull it straight up.
Figure 5.4-3 Pulling the Liner Pipe Out (1)
Cushion
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