Question about Braun Novamat 330 Slide Projector

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Autofocus slides keep going in and out of focus. Can I adjust it?

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Hi- I'm not at all familiar with this model so won't suggest a particular fix. However, in general, you may find some gear or other mechanical linkage, or perhaps a spring holding a gear in place has slipped. That caused the same symptm in some old Kodaks I know of. If you cannot figure it out AND you don't mind not having autofocus, you could disable AF. Inside you will find some sort of small light bulb. Disconnecting one lead will turn off that light and prevent AF from doing anything. If you end up taking that route, make sure you load all your slides in with the emulsion facing the same way (that's the less shiny side of the slide). This will reduce the amount of focus difference between slides.

Posted on Feb 20, 2009

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How do i turn off auto focus?


To strictly turn off the auto-focus, you have 2 options:
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2. Remove the bottom cover. Locate the auto-focus motor and clip on of the wires that power the motor.
If repair is what you want to do, the problem becomes more complex and expensive! You will have to contact: www.micro-tools.com
You can order the 2 special tools, instructions and any other parts you need from them. When Kodak stopped supporting the slide projector business, micro tools bought out the remaining repair parts.

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1 Answer

Why does autofocus keeps moving in and out on some slides


The autofocus system isn't really "autofocus". It is a measuring system - you manually focus the first slide, which sets the distance from the front of the slide in the gate to the back of the projection lens. By the focus motor moving the projection lens, subsequent slides will maintain that same distance. Continuous focus adjustment suggests that:
1> The curvature of the slide is changing because of the varying heat absorption rate of the transparency.
2> The autofocus system is out of calibration.
3> The autofocus system has a bind (it is being restricted from free operation).
About the only thing a user can do is to make sure ALL slides are oriented the same way in the tray. Beyond that, you will need a service manual and 2 or 3 specialized tools. Parts and tools can be purchased from: www.micro-tools.com

Good Luck !! jim

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The auto-focus system in Kodak slide projectors is really an auto-measurement system: One set manually, the system is supposed to maintain that distance on all subsequent slides. Correct orientation of the slides is that they are all placed in the slide tray in the SAME direction (the matte side of the transparency facing toward the screen). The measurement is from the FRONT of the slide transparency to the BACK of the projection lens. REPAIR calibration of the system requires 2 special tools: a RANGE SLIDE and a TARGET SLIDE. These tool slides and the calibration procedure SHOULD be available from: www.micro-tools.com They purchased all remaining repair parts from Kodak when Kodak stopped supporting slide projectors. Good Luck !! Jim

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The cycle solenoid adjust is a pretty straight-forward adjustment. Check out the attached image.

23444947-3mxfg03gdrcqpaxov0f13tzp-1-0.jpg

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1 Answer

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The auto-focus system requires adjustment / set-up with special tools if the auto-focus no longer functions correctly. Before ordering the tools from: www.micro-tools.com
check a couple of things:
1. Is the "Auto-Focus on-off Switch" in the "ON" position?
2. Put a slide that is as dark as possible in the slide gate. Power on, lamp on. Look down into the gate, on the front side of the slide. You should see a "S"-shaped light near the center of the slide.
If you have validated both of the conditions above, then I would contact my friends at micro-tools for the special tools. They should be able to provide you with adjustment instructions.
Good Luck !! Jim

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1 Answer

I have a braun Novamat 515 AF-m slide monitor. when the first slide is shonw you have to manually focus. Thereafter the auy=to focus takes over for remaining slides. problem the auto focus does now not...


Apparently you are not using glass slide mounts and your slide is popping in and out of focus. If you feel that it is working abnormally you can send it to service. In the USA Braun service is: HP Marketing Corp. PO Box 715 16 Chapin Rd. Unit 908 Pine Brook, NJ 07058 800-735-4373

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1 Answer

Just purchased a Kodak Ektagraphic AF1 & neither manual/auto focus or slide advance work. My other Kodak Ektagraphic AF had both auto & manual advance broken as well. Used it for many years. Was...


The model AF-1 did not have remote focus feature. It does have the Auto-Focus feature. The auto-focus adjustment is a pretty "fine-tune" adjustment that requires a factory alignment tool & a trained hand.
Your model AF is quite old, and probably requires replacement of the "link" that connects the slide change solenoid to the slide change mechanism. The problem is the plastic the "link" was made of gets brittle over the years and cracks, rendering slide change non-functional.
Both problems are easily remedied by a qualified repair dealer with the tools, training and parts.

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1 Answer

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Remove the orange plastic parts near the camera.

There is a square opening/hole.

Get a long small screwdriver and adjust the screw connected to the lens.

I did this with it on, so I could see if it was making a difference. I am not 100% sure if adjusting the screw was the fix. However, moving stuff around in that area seemed to make a huge difference.

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