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**__Question:__** My Axum doesn't seem to boot, voltages aren't right, how do I adjust the Power Supply? \\
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**__Answer:__** Link: [[AxumPSU:start|Follow the instructions on this page.]] \\
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=====How to adjust the 5 volt of the Axum PSU=====
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====Front side====
{{ :axumpsu:axum_psu_front.jpg?direct |}}
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===Rear side===
{{ :axumpsu:axum_psu_rear.jpg?direct |}}
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===Backplane measurepoints===
{{ :axumpsu:backplane_voltage_measurement.jpg?direct |}}
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  - First adjust the front side potentiometer (Orange circle) to the Middle of the potentiometer.
  - Connect a voltage measurement device with the "-" to the screw at the rear side (Green circle).
  - Connect the "+" of the voltage measurement device to the coil pin at the rear side (Blue circle).
  - Now power on the Power supply.
  - Without "load" the 5 volts should be adjusted to 5.35 volts (or maximum) at the rear side potentiometer (Red circle).
  - Now place the Power supply in the Axum.
  - When you have a single Power supply power on the Axum, with a redundant Power supply only power on one power supply.
  - Measure the 5 volt between the points (Blue circle) and Ground (Green circle) at the backplane.
  - Now fine adjust the potentiometer at the front (Orange circle) until you measure 5.15 volts for a single power supply or 5.20 volts for a reduntant power supply.
  - Repeat these steps for the second power supply.
  - The voltage measured at the measure point (Yellow circle) of the backplane should be near -15 volts (-16 is also okay).
  - The voltage measured at the measure point (Purple circle) of the backplane should be near +15 volts (+16 is also okay).
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