Netberg Demos R420 M2, User Manual

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Troubleshooting
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8.2.5. Power Supply, Chassis and Fan Issues
• Ensure that the chassis and power supply is appropriate for system requirement.
• Ensure all power cables and connectors are firmly connected to the power supply and the AC
outlet.
• If the power supply or the AC outlet has an on/off switch, make sure that it is on and verify that
the outlet is supplying current.
• Check for foreign objects inside the chassis such as screws that can short circuit connections.
• To isolate a specific PSU as defective, boot the system with just one PSU installed at a time.
• Check fan speed in WEBUI & event log to find out if there are any defective fans. If failure hap-
pens, please contact your dealer for assistance.
8.2.6. Cable Issues
Ensure that all cable connections, both internal and external, are attached correctly and securely.
8.2.7. Electrical Short or Overload
Remove non-essential items such as extra controller cards (e.g SAS 6G Mezz/B, 10G Mezz/B) or
HDD devices to check for shorts and overloads.
If the system boots correctly, there may be a short or overload associated with one of the compo-
nents.
Replace each of non-essential items one at a time to isolate which one is causing the problem.
If the problem occurs even after removing the non-essential components, the problem has to be
with the server board, power supply, memory, or processor.
8.2.8. Defective Components
Defective components, especially processor and memory, can cause system boot issues.
• Swap the memory modules with known good memory. Verify correct operation of the suspected
memory in a known working system.
• Swap the processor with a known good processor. Verify correct operation of the suspected
processor in a known working system.