DECmate II H7842A and H7842B PSU Pinouts?

Sometimes they did. SOmetiems they didn't. The VT240 printset includes the VR201 monitor and LK201 keyboard, for example. I asusme there were otehr pritnsets for the extra bits of the Rainbow, like the graphicvs board. I think I would do it a board/module at a time. Probably not worth doign the CPU board the RX50 controller, VR201 or LK021, sinceofficial prints for those exist. But the other add-on boards (had disk, RAM, graphics), the RX50 drive (I have never seen a print for that [1]), the PSU and the VR241 [2] would be worth getting scanned.. [1] The physical design of that drive is IMHO ridiculous. You can't get to the stepper motor screws wit hall the PCBs in place. So you need a set of extdenr cables (which AFAIK were never supplied) to do a head alignment. ARGH! [2] This is a Hitachi chassis. The PSU is even worse than most. It is drive -- once the thing gets going, by a widnign on the flyback transformer. So the PSU runs at the horizontal scan frequency, which means ripple of nteh supply liens will be less noticeable (slight shaddowing is a lot less of a problem if it doesn't drift across the screen). There si a seaprate osicalltor to get it going, which is disabled when a capacitor cahrges druing startup. So for the PSU to run and stay running not only must the chopper, etc, be OK, but slo the deflecion IC (on a thick film hybrid module, as is typical of Hitachi), the orizontal output stage, the flyabck transfomrer, etc. Sorting this montiro out is a right pain. Don't ask... -tony