2.1Control Knobs and Switches on Main Unit

2.1Control Knobs and Switches on Main Unit

2.1.1Main Unit

Figure 2.1-1 shows the appearance of the S-3400N main unit (Type II).

Condenser Lens Adjustment Screws (8 places)

Specimen Stage (Photo: Type II stage)

AIR Switch

EVAC Switch

Key Switch (Power switch)

Electron Gun

Column

Objective Lens Movable Aperture

Specimen Chamber

TrackBall

Type II stage accessory

EVAC Panel

Fig. 2.1-1 External View of the Column (Type II)

NOTICE: Do not touch the Condenser Lens Adjustment Screws (8 places).

The position of the condenser lenses adjusted shift, and the first performance might not be obtained.

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