Hitachi Microscope & Magnifier S-4800 Manual De Usuario

4-

2

(4) Disconnect two BNC type connectors from the objective lens aperture unit. Remove four 

screws fixing the flange of the unit. Pull off the unit straightly holding the flange.   
 

 
 
 
 

 
 
 
 
 
 
 
Place the sperture unit on the aluminum foil   

 
 
 
 

 
 
 
 
(10) Remove the aperture support fixing screw with a small screwdriver (the second smallest one 

of the watch screwdriver set).     
 

(11) Remove the aperture support with tweezers.   

 

(12) Remove the objective aperture plate with tweezers. 

To use the plate again, clean it by heating in the vacuum evaporator.    (Refer to 4.1.3 “Baking 
of aperture plates”)   
 

C970500

Aperture support
(585-4488)

Aperture holder 
(589-0548) 

O-ring 
(L456765)

aperture support fixing screw

(585-4421) 

BNC Connectors

Flange fixing 
screws