[cctalk] Re: Axil 220/245 PSU

Also a link to the lx service manual http://www.obsolyte.com/sun_lx/sparcLX.pdf Sent from my iPhone On Dec 31, 2023, at 14:37, Wayne S <wayne.sudol(a)hotmail.com> wrote:  Does this help? https://allpinouts.org/pinouts/connectors/power_supply/sun-sparcengine-moth… Sent from my iPhone On Dec 31, 2023, at 13:48, Alan Perry via cctalk <cctalk(a)classiccmp.org> wrote: Does anyone here have a running Axil 220 or 245 (Sun SPARCstation LX clone)? My 220 has a dead PSU and I am trying to get it working with a modern PC PSU. But I don’t know the pinout for the power connector. While the power connector is the same as used by Sun, the pinout and, aside from +5V and GND, the wire color scheme are different. I have identified 3 of the 6 wire colors and 7 of the 10 pins. The wire color scheme seemed to be a match for early sun4c but I just found something that suggests a couple wire colors are used differently. I have found that black is ground, red is +5V, and yellow is +12V. White, orange, and blue are TBD. A marking on the PSU board suggests white is -12V. Blue and orange seem to only used by a daughter board centered on a LM339 chip. But, as a software guy, I can’t tell what it does. Anyone here have any insight here that might help me? alan