Hitachi TM3000 Instruction Manual page 222

Location to be cleaned
Figure 5.1-10 Cleaning the Wehnelt 1
Dissolve the supplied metal polishing agent in alcohol, apply it to the tip of a cotton swab,
and clean the spots shown in Figure 5.1-10. Finally, thoroughly wipe the cleaned spots with
alcohol to remove any residual metal polishing agent or particles, and remove lint and
particles with an air blower. Using the system with such particles still remaining can result in
image distortion, such as stigma spots on the observation image. See Section 4.2.13 (3) for
stigmatism.
Figure 5.1-11 Metal Polishing Agent Figure 5.1-12 Cleaning the Wehnelt 2
With respect to the anode, clean the spots shown in Figure 5.1-13, as in the case of the
Wehnelt. To preclude any occurrence of stigma points, finally, thoroughly wipe the cleaned
spots with alcohol to remove any residual metal polishing agent or particles, and remove lint
and particles with an air blower. See Section 5.3 4. for the removal procedure.
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