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3-2 Focusing Block

Fig. 11

Fig. 12

Fig. 13

Replacing the Fine Adjustment Knob

# The fine adjustment knob has been attached on the right side at the

factory.

}The fine adjustment knob is designed detachable to prevent interference

with hand during manipulation of the fine adjustment knob or X-/Y-axis

knobs.

Usually attach the knob on the opposite side to the X- and Y-axis knobs.

1. Using the Allen screwdriver, loosen the clamping screw @ and remove

the fine adjustment knob ².

2. Remove the seal from the fine adjustment knob screw hole on the other

side and attach the knob by reversing the removal procedure.

3. Attach a provided seal on the screw hole | of the removed fine adjust-

ment knob.

}The fine adjustment dial ³ can be operated with your fingertip or finger

surface at the same time as manipulating the X- or Y-axis knob.

Adjusting the Coarse Adjustment

Knob Tension

# Adjust the coarse adjustment knob tension using the tension ad-

justment ring @.

The coarse adjustment knob tension is preadjusted for easy use. How-

ever, if desired, you can change the tension using the tension adjust-

ment ring @. Turning the ring in the direction of the arrow increases

tension, and vice versa.

The tension is too low if the stage drops by itself of focus is quickly lost

after adjustment with the fine adjustment knob. In this case, turn the ring

in the direction of the arrow to increase tension.

Pre-focusing Lever

}The pre-focusing lever ensures that the objective does not come in con-

tact with the specimen and simplifies focusing.

After focusing on the specimen with the coarse adjustment knob, turn

this lever @ in the direction of the arrow and lock; the upper limit on

coarse adjustment movement is set at the locked position.

After changing a specimen, refocusing is easily accomplished by rotat-

ing the coarse adjustment knob to reach the pre-focused position, then

making fine adjustments with the fine adjustment knob.

}Stage movement with the fine adjustment knob is not locked.

# When the pre-focusing lever is locked, a coarse movement stroke is

reduced due to the microscope's mechanism, causing the stage

not to be able to be lowered to the lower limit. To lower the stage to

the lower limit, release the pre-focusing lever.

BX51

(Fig. 11)

(Fig. 12)

(Fig. 13)