NEC Express5800/120Rj-2, User Manual

Page: 253 / 418

Troubleshooting 8-13
No screen display appears with beep:
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Check whether DIMMs are connected to the mating connectors firmly.
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Check whether DIMMs of different specifications are installed in the specific bank.
See Chapter 9 for the specifications of DIMMs.
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DIMMs must be populated in pairs and in the following order:
11 and 21, 31 and 41, 12 and 22, 32 and 42, 13 and 23, and 33 and 43.
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Installed DIMMs must be the same speed and must all be registered.
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Take a note of beep code pattern, and take appropriate action according to the table
listed earlier in "Beep Codes".
POST fails to complete:
T
Is the DIMM board installed?
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At least two DIMM boards are required for operation.
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DIMMs must be populated in pairs and in the following order:
11 and 21, 31 and 41, 12 and 22, 32 and 42, 13 and 23, and 33 and 43.
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Installed DIMMs must be the same speed and must all be registered.
T
Is the memory size large?
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The memory check may take a few seconds if the memory size is large. Wait for a
while.
T
Did you perform any keyboard or mouse operation immediately after you started the
server?
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If you perform any keyboard or mouse operation immediately after start-up, POST
may accidentally detect a keyboard controller error and stops proceeding. In such
a case, restart the server once again. Do not perform any keyboard or mouse
operation until the BIOS start-up message appears when you restart the server.
T
Does the server have contains appropriate memory boards or PCI devices?
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Operation of the server with unauthorized devices is not guaranteed.