Olympus IX71 - Manual (Page 21)

17
IX71/IX51
3 Detaching the Fine Adjustment Knob (Fig. 11)
}The fine adjustment knob is designed detachable in order to prevent
interference between the knob and the operator’s hand manipulating the
X- and Y-axis knobs.
· Loosen the clamping screw ³ using the Allen screwdriver and remove
the fine adjustment knob.
After detaching, the seat of the fine adjustment knob is hollowed to
facilitate manipulation with the thick of a finger.
}The pre-focusing lever prevents collision between the specimen and
objective and simplifies the focusing operation.
After bringing the specimen into approximate focus with the coarse
adjustment knob, turn the pre-focusing lever @ in the direction of the
arrow to lock it. Hereafter, the upper limit of the coarse adjustment will
be limited at the position where the lever is locked.
When bringing a specimen in focus, approximate focus can be obtained
by simply raising the coarse adjustment to the stop position so all you
have to do more is control the fine adjustment knob.
}The stage up/down movement using the fine adjustment knob is not
limited.
# When the pre-focusing lever is locked, the coarse adjustment stroke is
limited by the mechanism and it cannot reach the previous lower limit.
If you want to control the coarse adjustment knob to the previous lower
limit, unlock the pre-focusing lever.
4 Pre-focusing Lever (Fig. 12)
Fig. 12
@