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The battery is soldered to the CPU. People from Zeiss Germany said that it needs to replace all the CPU. Now a days there is no longer spare parts for that instrument. I recommen you just change the day and time each time you turn it on
Since there's only a very small amount of light reaching the lens system of microscopes when on high powers, A special technique (called >>>oil immersion
Not using this technique must be the cause of the problem you are experiencing.
eHow will guide you through the exact procedure of using the oil immersion technique: http://www.ehow.com/how_8431358_focus-high-power-objective-microscope.html
Good luck in exploring the micro world!
Optical lens problem. I assume ure not a pro in repairing it, so send it for repair to local tech. Before u do that, get a lens cleaning kit and clean your optical lens. Usually the optical lens cleaning kit comes with a cd and solution. Use it according to the instruction manual. If still the same, then send it to tech for repair.
The unit needs to have the laser reader lens cleaned but DONT use
regular rubbing alcohol. Get pure stuff....the rubbing type leaves a
glare on glass and plastic lenses.
Also ,the chrome rails that the
laser moves along need to be cleaned and lubed with liquid silicone.
method clears read problems most of the time.
when you take the lens off .. there is a mirror and the CCD array ... those can get dusty or if anyone smokes around the camera then that gets on these parts .. you can dust the mirror and CCD behind with a soft clean camel hair brush but a good cleaning should be done by a pro .. thats a "front surface mirror" .. that is, the mirror surface is not protected by glass the way mirrors normally are .. so it scratches very easy ... there are special techniques for cleaning that must be learned before attempting a deep cleaning .. the back side of the lens also may have a smoky coating that has to be cleaned .. again a pro is best but you can use a lens cleaning cloth and solution .. (dont spray the solution into the lens . only on the cloth .. with every thing clean your camera should be back to like new performance ..