bhutchis Posted February 1, 2016 Share #1 Â Posted February 1, 2016 Advertisement (gone after registration) Hi, Â I recently took apart my slide projector-a Pradolux RT 300 in order to service it (mostly just cleaning gummed up gears). Â However, I forgot to take note of the wiring before disconnecting the headers for one of the circuit boards. I am wondering if anyone knows where to find a service manual, or if perhaps someone who has this model of projector wouldn't mind opening it up and posting a picture? (There are 2 screws on the lateral sides, 2 on the bottom front, and one in the back that allow the bottom panel to lift out when removed) Â Â Any help would be greatly appreciated. Â best, Â b Quote Link to post Share on other sites More sharing options...
Advertisement Posted February 1, 2016 Posted February 1, 2016 Hi bhutchis, Take a look here Leica Pradolux RT-300 wiring/repair help. I'm sure you'll find what you were looking for!
argusmike Posted November 26, 2016 Share #2 Â Posted November 26, 2016 BH, Did you ever get it together? I was just given one and am at the same point, but everything is still assembled so I could make a photo. Regards, Mike Reitsma 1 Quote Link to post Share on other sites More sharing options...
bhutchis Posted November 26, 2016 Author Share #3 Â Posted November 26, 2016 Mike, I would be very grateful for a photo (or as many as you care to take--it's the wiring order I need help with), my projector is still disassembled and wiring yet to be figured out. Â Â thanks, Â bh Quote Link to post Share on other sites More sharing options...
ken2116 Posted October 5, 2018 Share #4 Â Posted October 5, 2018 I also need to service my RT300 whose slide changing mechanism gradually slowed and most likely is gummed up. Â Can you tell me how to disassemble it? Â Is a service manual available - I've removed all of the screws I can find but there must be one or more hidden as it won't quite come apart. Â Also, Â can you recommend solutions or solvents to use and those to be avoided? Â Any parts of the mechanism that I should avoid disassembling, such as optical path or autofocus elements that require precision alignment? Â Okay to direct this to a new post. Quote Link to post Share on other sites More sharing options...
bhutchis Posted December 5, 2018 Author Share #5  Posted December 5, 2018 Hello Ken2116, Would you be able to take any pictures of the PCB board and cables connecting to it? I didn't do so when I took mine apart, and cannot get it back together correctly. If I can get the correct wires/coloring for the pins, I'll be able to service the damage I caused to my board when I reconnected the wires incorrectly. I don't have specific recommendations for solvents, I would assume a light kind of oil, but I imagine someone might have some better suggestions. It seems to make sense to me to clean off the previous lubricant that has begun to break down/get saturated with particulates. I don't recall if I used something more benign like rubbing alcohol, or if I used something potent like acetone, or if I didn't use solvents at all and just ran the machine till it had warmed sufficiently to wipe off the old lubricant. I wouldn't recommend anything stronger than acetone. For a lubricant, I think I used sewing machine oil. My idea was to apply something light without a cleaner--as I understand, CLP will "clean, lubricate, and protect" but then can clog up later with all the newly free particulates it dissolved when applied). Bear in mind, I am not a professional service-man, so if others have better suggestions I'd be happy to hear them. I'm probably more gung-ho about taking things apart that probably shouldn't, as to parts you should avoid disassembling, I don't know. I haven't been able to check the results of my cleaning since I haven't been able to correctly connect my cables to the PCB board. I don't have any service manual, unfortunately. I do recall one or two screws that were harder to find, I'll have a look and see what I can find. Quote Link to post Share on other sites More sharing options...
AlanD Posted February 8, 2019 Share #6  Posted February 8, 2019 I just got one which is working but doesn’t reverse properly (it just goes forward) without breaking it further, which screws do I need to remove to expose the PCB to see the wiring? Quote Link to post Share on other sites More sharing options...
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