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AO Series 10 stuck coarse adjustment   Topic List   < Prev Topic  |  Next Topic >
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Hi,

I recently purchased an AO Series 10 microscope off of ebay. There
was no mentioned of a stuck coarse adjustment in the ad, so it's not
DOA, I can't justify returning it (also, once shipping is factored
in, it's not worth returning). Everything worked well on the scope
except the coarse focusing. It locks in the downward travel, so I
can't go very far with it. I was able to focus by moving the stage
up. I have posted two photos on my Picasa site to show what I have
done. It's not ideal, so that's why I am asking for advice here. I
have done research on the AO manuals and catalogues site, and tried
the advice of loosening the screw on the right knob and turning the
knob. One of my photos shows the screw I loosened. That didn't seem
to work. Another piece of advice I read was to take off the stage and
and adjust the screws in the dovetail holding the stage. I have not
tried that yet. I decided to post this query first.

http://picasaweb.google.com/ronmschwartz/AOSeries10StuckCoarseAdjustme
nt?authkey=Gv1sRgCOyYivbb177oHA&feat=directlink

Thanks in advance for any advice.

Ron




Sun Mar 1, 2009 10:08 pm

schwartzronald
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Hi, I recently purchased an AO Series 10 microscope off of ebay. There was no mentioned of a stuck coarse adjustment in the ad, so it's not DOA, I can't...
schwartzronald
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Mar 1, 2009
10:08 pm

Hi Ron, I looked for your photos with no success. "Another piece of advice I read was to take off the stage and ... Are you able to turn the coarse focus knobs...
gw2brown
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Mar 1, 2009
10:31 pm

Hi Gary and others trying to help, The Picasa link to see photos of my scope must have gotten chopped off. Here it is again: ...
schwartzronald
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Mar 2, 2009
2:19 pm

Hello Ron, It sounds like the "timing" of the course focus worm screw gear is off - you will need to remove the double set-screw which holds the bronze mandrel...
Microscopeman
microscopeman1
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Mar 1, 2009
11:38 pm

I had a similar problem. The problem is most likely dried lubricant gumming up the works in the helical groove that is part of the course focus or dried...
Norman
normzoo
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Mar 1, 2009
11:54 pm

... I agree with previous posters. I just want to emphasize, NOT to remove the screws holding the main dovetail on the body. Doing that will mess up the main...
mattbrin
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Mar 2, 2009
1:28 pm

... If the screw you loosened is in the photo, it was not the right one. Also your comment on the dovetail is a bit off. I would not recommend trying to fix...
mattbrin
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Mar 3, 2009
12:03 am
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