This is my setup for working on the RD53/Micropolis 1325. I had a blower going through a used RK05 HEPA filter to the bag to create a clean environment for the open drive. Others have successfully worked in drives without the filtered air. The drive is opened so I could put shims in to get it to spin up.
The output of my buffer board is connected through a 50k resistor to the error amplifier. Its location is shown in later picture (2.5K) . The other wire with the black tape connected to the drive is ground. Behind the drive is my MFM board and the buffer board.
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Feel free to contact me, David Gesswein djg@pdp8online.com with any questions, comments on the web site, or if you have related equipment, documentation, software etc. you are willing to part with. I am interested in anything PDP-8 related, computers, peripherals used with them, DEC or third party, or documentation.
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