Olympus EHT-431 Manuel d'instruction - Page 11

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2 )

Light Source

The light source consists of lamp house

and lamp socket

® .

The lamp socket is provided with two coaxial lamp centering knobs

@ _

The Jamp socket can be moved back and forth along the optical

axis to eliminate uneven illumination in the field of view.

Electric Connection

1) Insert the jacks of the lamp cord into the low voltage outlet at

the back of microscope base.

2) Insert the plugs of the line cord into the tine cord socket and the

po......er

outlet respectively.

Adjustment of Line Voltage

1) Turn the voltage adjustment knob clockwise to position ON.

2) If the bulb is dimmly lit. the line voltage is proper, and you have

only to manipulate the voltage adjustment knob in order to obtain

optimum light intensity. with no need to further proceed to the

following procedure 3).

3) Even after the voltage adjustment knob is turned on, if the bulb

does not light or lights up bright immediately after switching on,

rotate gradually the line voltage adjustment screw (at the back of

the base) with a coin, until the lamp dims.

According to the fluctuations of line voltage and frequency

(SO/60Hz), minimum voltage required for lighting the bulb

varies; if the bulb does not light at all or lights up immediately

after switching on, re-adjustment of the line voltage screw is

necessary to dim the bulb.

Note: For light intensity adjustment after dimming the bulb,

use the voltage adjustment knob on the side of the base.

Attach the tamp socket.

1) Loosen the clamping screw

<!) .

2) Insert the lamp socket

into the lamp house

CD .

3) Tighten the clamping screw to secure the socket.