OCTOMINER X12 ULTRA V3 Troubleshooting Manual page 6

System Won't Start, No Video.
To find a cause in a case when the system just won't start it's best to begin with the simplest of
probable reasons and working your way to the more time consuming/ complex ones, eg. it's best to
check if the power stip is on before changing the RAM.
*Make sure the power supply LED's are on.
If not make sure the power supply is fully inserted. Try with just one power supply first.
* Is the PSON cable connector firmly fastened on the motherboard and the power supply back-
plane?
The motherboard is responsible for turning on the power delivery. If the 6 pin cable connecting the
power supply backplane and the motherboard is not securely connected the system won't turn on.
*Are the status LED's on the front panel working?
The Systems Controller is powered by the motherboard.
*Check if the CPU fan is spinning.
If not, press the power button on the front panel or the one on the motherboard.
*Did you connect VGA properly? Is the monitor powered?
System keeps rebooting
.
* Make sure each power supply is inserted properly and the status LED is working.
* If the system keeps crashing remove all but one power supply and remove all but one GPU.
* If still facing the same issue replace that single power supply and replace the graphics card
with a different one.
* Reseat RAM into another slot, make sure it's properly seated.
* Unplug the Systems Controller PCIe cable, disabling the fans.
SSD
Each octominer is tested before shipping. Issues with the boot media are most likely shipping
related or can happen when the SATA cable gets disturbed during initial set up.
If the boot drive is not detected try disconnecting and connecting the drive. In case that doesn't
help make sure that both of the SATA cable connectors are securely fastened.
If the machine is still booting into the bios screen reconnect the sata cable to a different SATA
header on the motherboard.
The machine can't connect to the internet
.
After making sure the modem and the ethernet cable works proceed to checking if
the gray ethernet cable labeled in gray as "6" is firmly connected on both the
motherboard and the systems controller. If this doesn't solve the issue see if the port
on the rear of the machine works.