axumpsu:start
This is an old revision of the document!
Table of Contents
Question: My Axum doesn't seem to boot, voltages aren't right, how do I adjust the Power Supply?
Answer: Link: Follow the instructions on this page.
How to adjust the 5 volt of the Axum PSU
Front side
Rear side
Backplane measurepoints
- 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.
- The voltage measured at the measure point (Purple circle) of the backplane should be near +15 volts.
axumpsu/start.1565167910.txt.gz · Last modified: 2019/08/07 10:51 by support