31 Dec
2023
31 Dec
'23
3:33 p.m.
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