Difference: FilamentExchange (1 vs. 2)

Revision 227 Jul 2007 - Main.KdDerr

 
META TOPICPARENT name="Jeol1230Instructions"
Contents

Filament Exchange

Determining if the filament is blown

  • You had a beam, but now you do not.
    • You did not move the sample
    • or change any microscope parameters
  • The Beam Current value drops to the filament off value

Removing filament

  • Remove sample
Changed:
<
<
  • Press Gun Vent button on control panel
  • Flip Gun Lift switch to on control panel
>
>
  • Press Gun Vent button - control panel
  • Flip Gun Lift switch to on - control panel
 
  • Wait for gun to lift (patience)
  • Put on lint free gloves
  • Unscrew outer ring from wehnelt assembly
  • Pull out wehnelt assembly
  • Replace the outer ring into the gun
  • Make sure the o-ring in clean and in its groove

  • Set ALLOWTOPICVIEW =

-- KdDerr - 27 Jul 2007

Revision 127 Jul 2007 - Main.KdDerr

 
META TOPICPARENT name="Jeol1230Instructions"
Contents

Filament Exchange

Determining if the filament is blown

  • You had a beam, but now you do not.
    • You did not move the sample
    • or change any microscope parameters
  • The Beam Current value drops to the filament off value

Removing filament

  • Remove sample
  • Press Gun Vent button on control panel
  • Flip Gun Lift switch to on control panel
  • Wait for gun to lift (patience)
  • Put on lint free gloves
  • Unscrew outer ring from wehnelt assembly
  • Pull out wehnelt assembly
  • Replace the outer ring into the gun
  • Make sure the o-ring in clean and in its groove

  • Set ALLOWTOPICVIEW =

-- KdDerr - 27 Jul 2007

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