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

On Dec 31, 2023, at 15:39, Alan Perry via cctalk <cctalk(a)classiccmp.org> wrote: The really frustrating thing is that I found a Usenet thread from 1998, after Axil shut down, where someone asked a similar question about Axil 220/245 PSUs and a former Axil employee seems to have sent the person documents that he needed to get his system going. Sadly those documents haven't managed to make their way to bitsavers or archive.org. alan > On 12/31/23 3:33 PM, Alan Perry via cctalk wrote: > Not really. As I said, Sun and Axil, while using the same 12-pin power connector, put the pins in different positions and color code the wires differently. For the 220, Axil also sourced the PSU from a different vendor and it is a completely different size (almost the same size as a flexatx psu). Also, only 10 of the 12 pins are used. > > The Sony PSU used in pizza box sun4c system changed from black (GND)/red(+5V)/yellow(+12V)/blue(-12V)/orange(+5V POR) to black/red/blue/brown/gray. The sun4c lunchboxes used the same connector except they started call the orange/gray pin SENS (is that the same as POR in Sun's usage?). The sun4c lunchbox scheme continued through the sun4m lunchboxes. The sun4m pizzaboxes went to an 18-pin power connector with the same wire color scheme, except gray became "PwrOff"/"Poff". > > The PSU in my Axil 320 (a SS10/SS20 clone) uses the 18-pin connector and a color scheme similar to the SS10/20 one but I haven't checked all of the pins to see if they are completely the same. > > >> On 12/31/23 2:44 PM, Wayne S via cctalk wrote: >> 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 >>