OCTOMINER X8ULTRA User manual

X8ULTRA
OCTOMINER™
System Troubleshooting Guide
Welcome
Thank you for purchasing the OCTOMINER™ X8ULTRA™ mining system.
Every X8 is thourougly tested before shipping, however some issues might be crop up while
shipping or during set up.
This guide will show how to use the built in system diagnostics tool and will go over how to fix
some of the most common issues.
About the System Diagnostics Tool
X8 ULTRA has an integrated system diagnostics program named OCTOTEST for checking
healt for various system devices, including: power supply telemetry, fan speeds/PWM,
system temperatures, humidity and air pressure.
The system diagnostics tool “OCTOTEST” has been preloaded on the SSD the system ships with.
When installing a new operating system to your X8, it is recommended to either use a different
SSD or to make a copy of the one provided by OCTOMINER.
Initializing System diagnostics.
X8 ULTRA has an integrated system diagnostics mode for system health monitoring.
OCTOTEST has been built to verify that the system is running nominally and to pinpoint issues
with an error code on the monitor. This troubleshooting guide will go through the error
messages and help you fix these issues.
To enter the system diagnostics wait for the system to initialize. The system will reboot several
times at first, wait until the system bios has initialized.
To test the fans make sure you have the original SSD that shipped with the system.
1. Hold the down arrow on the keyboard until you get to the boot selection.
2. Select OCTOTEST from the boot selection and press enter.
3. Choose the correct test option by typing the number correspondind to your system
.
For X8Ultra, select an approptiate 8GPU option for your system:
3W is for systems with 140mm fans
2W is for systems with 120mm fans
3PSU stands for systems with 3 power supplies
2PSU stands for systems with 2 power supplies
1400W is for systems with DELL power supplies
NB!

For example, for a system with 2 power supplies you would select the option:
2) 8GPU_2_PSU
To better understand the diagnostics results refer to the images below:

If none of the fans are working make sure that the PCIE power cable is firmly
connected to the systems controller and the power supply backplane. Check
for “PSU” labeled in blue in the graphic on the next page.
Test Fails with the following error message:
FAN 0 MAX RPM <4200
FAN 0 50% PWM >3500
Issue: The rightmost fan has PWM issues. The issue might be a loose connector
a defective fan, something blocking the airflow or a temporary issue with the testmode.
Solution: Rerun the testmode. If the result is the same then
make sure the Connector Labeled as “ FAN 0” on the diagram
is firmly attached.
FAN 2 MAX RPM <4200
FAN 2 50% PWM >3500
Issue: The second fan from the right has PWM issues. The issue might be a loose connector
a defective fan, something blocking the airflow or a temporary issue with the testmode.
Solution: Rerun the testmode. If the result is the same then
make sure the Connector Labeled as “FAN 2” on the diagram
is firmly attached.
FAN 4 MAX RPM <4200
FAN 4 50% PWM >3500
Issue: The third fan from the right has PWM issues. The issue might be a loose connector
a defective fan, something blocking the airflow or a temporary issue with the testmode.
Solution: Rerun the testmode. If the result is the same then
make sure the Connector Labeled as “FAN 4” on the diagram
is firmly attached.
FAN 6 MAX RPM <4200
FAN 6 50% PWM >3500
Issue: The fourth fan from the right has PWM issues. The issue might be a loose connector
a defective fan, something blocking the airflow or a temporary issue with the testmode.
Solution: Rerun the testmode. If the result is the same then
make sure the Connector Labeled as “FAN 6” on the diagram
is firmly attached.
FAN 8 MAX RPM <4200
FAN 8 50% PWM >3500
Issue: The leftmost fan has PWM issues. The issue might be a loose connector
a defective fan, something blocking the airflow or a temporary issue with the testmode.
Solution: Rerun the testmode. If the result is the same then
make sure the Connector Labeled as “FAN 8” on the diagram
is firmly attached.

Built in display doesn’t work/ Blue LED blinks slowly.
Here are some of the troubleshooting steps to fix an issue in the case of a malfunctioning or non
functioning display.
1. Make sure that the power supplies turn on at the same time from a PDU (Power Delivery Unit)
Plugging in the power supplies one at a time may interfere with the normal functioning of the
systems controller.
2. Make sure that the green LED on the power supplies is working. If the light is not turned on try
Taking a power supply from a different slot and see if the LED turns on and that the testmode is
working. If this is the case then the issue is most likely with the power supply. However if after
swapping the working power supply it also doesn’t light up the LED then the issue is with the
power supply backplane. Inspect the pins of the backplane to see if any of them are bent.
3. Make sure that the 4 pin cable is firmly connected to the display.
No video from front panel VGA
Check that the VGA connector labeled on the schematics in red is securely connected to the
motherboard and the system controller.
Clear CMOS button not working
Check that the clear CMOS connector labeled on the schematics in purple is securely
connectedto the motherboard and the system controller.

Power Delivery System, Power Supplies, Compatible cables and PDU
OCTOMINER X12 and X8 come with various configurations of power supplies ranging from one to
four units with ratings ranging from 460W up to 1800W per unit. Verify the specification of your
power supply and calculate the rating based on your mains voltage as 110-250v output has different
wattage ratings. The system consumes up to 200W at 100% fan speed. Leave at least 10% power
surplus for optimal operation.
The accessories include power splitter cable. The C13 ends are meant to be plugged in to the
power supplies. On the other end you'll find a C20 inlet that is compatible with properly rated cables
and PDU's (Power Delivery Unit).
C20 inlets are rated at 16A/250VAC international and 20A/250VAC North America whereas C13 is
rated at 15A/250V in North America and international at 10A/250V.
Due to the higher rating of the C20 inlet, a properly rated cable and PDU combination must be used.
If such a power delivery option is not available to you it is possible to use individual C13 cables for
each of the power supplies.
Troubleshooting power delivery
Refurbished server power supplies provided by OCTOMINER and tested in stress test cabinets
before they get installed in your machine. In addition to stress testing, the output voltages are mea-
sured to be within optimal range. However here are a few tips to pinpoint if you are having any issues
with your power delivery.
Make sure your graphics cards power requirements don't exceed the rated output of the power supplies.
Power output of the power supplies is dependent on the supplied input voltage. Check the label on the
power supply to match your AC voltage to the output rating and add 200W for the system running with
fans at 100%. It's strongly recommended to not run your system over 90% of the maximum power output.
* Check that the 6 pin cable labeled as PSON is rmly connected on the motherboard and PSU backplane.
* 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 dierent one.
* Reseat RAM into another slot, make sure it's properly seated.
* Unplug the Systems Controller PCIe cable, disabling the fans.

The system doesn’t turn on.
Check that the 6 pin cable labeled as PSON is firmly connected on the motherboard
and PSU backplane.

SYSTEM CONTROLLER
BME 0 out of range
Issue: The Temperature sensor located at the lower center of the front of the machine is not
reporting the correct temperature.
Solution: Make sure the Connector Labeled in light green as “BME 0” on the diagram is
firmly attached.
Temp 1 out of range
Issue: The Temperature sensor located at the rear of the machine is not reporting the correct
temperature.
Solution: Make sure the Connector Labeled in dark blue as “TEMP 1” on the diagram is firmly
attached.
PSU AC out of range
Issue: The systems controller can’t communicate with the power supply, the power supply is not
firmly connected, the power cable is broken or the power delivery unit doesn’t work.
Solution: Make sure the Connector Labeled on the diagram above in blue as “PSU”
on the systems controller is firmly attached.
Make sure the other end of the cable is securely attatched to the power supply backplane shown
on the diagram below.
PSU DC out of range
Issue: The systems controller can’t communicate with the power supply, the power supply is not
firmly connected, the power backplane has a bent pin or the power supply is not functional.
Solution: Make sure the Connector Labeled on the diagram above in blue as “PSU”
on the systems controller is firmly attached.
Make sure the other end of the cable is securely attatched to the power supply backplane shown
on the diagram below.

OCTOMINER™
www.octominer.com
[email protected]
X8 ULTRA is a trademark of OCTOMINER™
Other issues with the front panel:
Some issues can not be displaid through the systems controller Testmode, The following
issues that might happen are:
No image displaid on the status display.
This issue can occur when the display cable has come loose. Make sure that the connector
labeled in mint green as “7” is firmly connected on both the oled panel below the systems
controller, as well as on the systems controller itself.
The USB on the front panel is not working.
This issue is most likely related to the Black USB cable between the motherboard and the
systems controller. Make sure the cable Labeled in green as “USB” is firmly connected.
The reset and power button are not working.
This issue is caused by the power header cable being loose or damaged. Make sure the
red tipped cable labeled in red as “3” is firmly connected on the motherboard as well as on
the systems connector.
The Monitor will not display a picture.
This issue can be caused by several factors. First check that the VGA cable is
firmly connected on both the motherboard and the monitor.
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.