Does anyone know which IC is being used by the 720x VXR router for monitoring the voltage readings (specially the one for -12V)?

I've looked around and seems the DS1620 on I/O card is only for temperature. I could be wrong though.

Would appreciate if anyone can point me into the right docs. Trying to troubleshoot an internal -12V issue which shuts down my 7206VXR upon reaching the threshold within 5 minutes of power-up.

This happens on C7206VXR chassis, NPE-400, I/O-2FE/E controller. I have only been looking into the I/O controller. All tray fans working; input voltage good and clean on either/both PSU's. Inlet/outlet temps within range.

Thanks,

roy
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