Supermicro Supero X7DBN, User Manual

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3-2
X7DBN User's Manual
NOTE
If you are a system integrator, VAR or OEM, a POST diagnostics
card is recommended. For I/O port 80h codes, refer to App. B.
Memory Errors
1. Make sure the DIMM modules are properly and fully installed.
2. Check if different speeds of DIMMs have been installed and that the BIOS setup
is con fi gured for the fastest speed of RAM used. It is recommended to use
the same RAM speed for all DIMMs in the system.
3. Make sure you are using the correct type of DDR2 Fully Buffered (FBD) ECC
533/667 SDRAM (*recommended by the manufacturer.)
4. Check for bad DIMM modules or slots by swapping a single module between
four slots and checking the results.
5. Make sure all memory modules are fully seated in their slots. As an interleaved
memory scheme is used, you must install two modules at a time, beginning
with Bank 1, then Bank 2, and so on (see Section 2-3).
6. Check the position of the 115V/230V switch on the power supply.
3-2 Technical Support Procedures
Before contacting Technical Support, please take the following steps. Also, note
that as a motherboard manufacturer, Supermicro does not sell directly to end-us-
ers, so it is best to
fi rst check with your distributor or reseller for troubleshooting
services. They should know of any possible problem(s) with the speci fi c system
con fi guration that was sold to you.
1. Please go through the ‘Troubleshooting Procedures’ and 'Frequently Asked Ques-
tion' (FAQ) sections in this chapter or see the FAQs on our web site http://www.
supermicro.com/support/faqs/ before contacting Technical Support.
2. BIOS upgrades can be downloaded from our web site at
http://www.supermicro.com/support/bios/
Note: Not all BIOS can be fl ashed depending on the modifi cations to the boot
block code.
3. If you still cannot resolve the problem, include the following information when
contacting Super Micro for technical support:
• Motherboard model and PCB revision number
• BIOS release date/version (this can be seen on the initial display when your
system
fi rst boots up)