9401-150 Power Supply Pinout

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The PSU pinout of the Model 150 is nowhere to be found on the net. This article should change that.[1]

Connector to Colors

The board has connectors for five cables coming from the PSU. The connectors on the board are labelled 1, 2, 9 (first row), and 10, 11 (second row). All but 9 are mechanically standard 6-pin PC/AT PSU connectors.

All descriptions are taken from an original 150 PSU.

Connectors 1 and 2 are also mostly standard AT pinout.[2]

Pin Connector
1 2 9 10 11
1 Orange Black Red[3] Green Green
2 Red Black Purple Green Green
3 Yellow White Black Green Green
4 Blue Red Brown Black Black
5 Black Red Grey Black Black
6 Black Red   Black Black

Colors mapping

Color Meaning
Black Ground
Blue -12 V
Brown Unidentifiable[4]
Grey Unidentifiable[5]
Green 3.3 V
Orange Power Good
Red 5 V
Purple Power on/off
White VFan
Yellow 12 V

See also

Footnotes

  1. This is a preparing work for another article describing how to replace an original 150's PSU with a stock PC one.
  2. The only difference being the white wire, supplying -5 V on the PC/AT; but is designated VFAN for the AS/400 PSU.
  3. 5 V Standby Power
  4. Signal designation as regex: [EF][PB]O[UW]. The circuit board label is partly covered by a very sticky white substance; no silicone rubber. Scratching it away also removes the print.
  5. has 7.8 V after power on.